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Rev | Author | Line No. | Line |
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2288 | clevermous | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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2455 | mario79 | 3 | ;; Copyright (C) KolibriOS team 2004-2011. All rights reserved. ;; |
2288 | clevermous | 4 | ;; Copyright (C) MenuetOS 2000-2004 Ville Mikael Turjanmaa ;; |
5 | ;; Distributed under terms of the GNU General Public License ;; |
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6 | ;; ;; |
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7 | ;; BOOTCODE.INC ;; |
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8 | ;; ;; |
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9 | ;; KolibriOS 16-bit loader, ;; |
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10 | ;; based on bootcode for MenuetOS ;; |
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11 | ;; ;; |
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12 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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13 | |||
14 | $Revision: 4624 $ |
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15 | |||
16 | |||
17 | ;========================================================================== |
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18 | ; |
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19 | ; 16 BIT FUNCTIONS |
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20 | ; |
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21 | ;========================================================================== |
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22 | |||
23 | |||
24 | putchar: |
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25 | ; in: al=character |
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26 | mov ah, 0Eh |
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27 | mov bh, 0 |
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28 | int 10h |
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29 | ret |
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30 | |||
31 | print: |
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32 | ; in: si->string |
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33 | mov al, 186 |
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34 | call putchar |
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35 | mov al, ' ' |
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36 | call putchar |
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37 | |||
38 | printplain: |
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39 | ; in: si->string |
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40 | pusha |
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41 | lodsb |
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42 | @@: |
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43 | call putchar |
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44 | lodsb |
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45 | test al, al |
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46 | jnz @b |
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47 | popa |
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48 | ret |
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49 | |||
3796 | yogev_ezra | 50 | getkey: ; Use BIOS INT 16h to read a key from the keyboard |
2288 | clevermous | 51 | ; get number in range [bl,bh] (bl,bh in ['0'..'9']) |
52 | ; in: bx=range |
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53 | ; out: ax=digit (1..9, 10 for 0) |
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3989 | yogev_ezra | 54 | mov ah, 0 ; If 'int 16h' is called with 'ah' equal to zero, the BIOS will not return control to the caller |
55 | int 16h ; until a key is available in the system type ahead buffer. On return, 'al' contains the ASCII |
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56 | cmp al, 27 ; code for the key read from the buffer and 'ah' contains the keyboard scan code. (27=>ESC) |
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57 | jz @f ; If ESC is pressed, return (user doesn't want to change any value). |
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58 | cmp al, bl ; Compare 'al' (ASCII code of key pressed) with 'bl' (lowest accepted char from the range). |
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59 | jb getkey ; ASCII code is below lowest accepted value => continue waiting for another key. |
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60 | cmp al, bh ; Compare 'al' (ASCII code of key pressed) with 'bh' (highest accepted char from the range). |
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61 | ja getkey ; ASCII code is above highest accepted value => continue waiting for another key. |
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62 | push ax ; If the pressed key is in the accepted range, save it on the stack and echo to screen. |
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2288 | clevermous | 63 | call putchar |
64 | pop ax |
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3989 | yogev_ezra | 65 | and ax, 0Fh ; Convert ASCII code to number: '1'->1, '2'->2, etc. 0Fh=1111b. |
66 | jnz @f ; ASCII code for '0' is 48 (110000b). (110000b AND 1111b) = 0 |
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67 | mov al, 10 ; So if key '0' was entered, return 10 in 'ax' |
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2288 | clevermous | 68 | @@: |
69 | ret |
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70 | |||
71 | setcursor: |
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72 | ; in: dl=column, dh=row |
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73 | mov ah, 2 |
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74 | mov bh, 0 |
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75 | int 10h |
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76 | ret |
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77 | |||
78 | macro _setcursor row,column |
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79 | { |
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80 | mov dx, row*256 + column |
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81 | call setcursor |
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82 | } |
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83 | |||
3989 | yogev_ezra | 84 | macro _ask_question question,range,variable_to_set |
85 | { |
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86 | _setcursor 16,0 |
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87 | mov si, question ; Print the question |
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88 | call print |
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89 | mov bx, range ; range accepted for answer |
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90 | call getkey |
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91 | cmp al, 27 ; If ESC was pressed, do not change the value |
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92 | jz .esc_pressed |
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93 | mov [variable_to_set], al |
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94 | } |
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95 | |||
2288 | clevermous | 96 | boot_read_floppy: |
97 | push si |
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98 | xor si, si |
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99 | mov ah, 2 ; read |
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100 | @@: |
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101 | push ax |
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102 | int 0x13 |
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103 | pop ax |
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104 | jnc @f |
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105 | inc si |
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106 | cmp si, 10 |
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107 | jb @b |
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108 | sayerr_badsect: |
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109 | mov si, badsect |
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110 | sayerr_plain: |
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111 | call printplain |
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112 | jmp $ |
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113 | @@: |
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114 | pop si |
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115 | ret |
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116 | |||
117 | ; convert abs. sector number (AX) to BIOS T:H:S |
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118 | ; sector number = (abs.sector%BPB_SecPerTrk)+1 |
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119 | ; pre.track number = (abs.sector/BPB_SecPerTrk) |
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120 | ; head number = pre.track number%BPB_NumHeads |
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121 | ; track number = pre.track number/BPB_NumHeads |
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122 | ; Return: cl - sector number |
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123 | ; ch - track number |
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124 | ; dl - drive number (0 = a:) |
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125 | ; dh - head number |
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126 | conv_abs_to_THS: |
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127 | push bx |
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128 | mov bx, word [BPB_SecPerTrk] |
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129 | xor dx, dx |
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130 | div bx |
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131 | inc dx |
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132 | mov cl, dl ; cl = sector number |
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133 | mov bx, word [BPB_NumHeads] |
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134 | xor dx, dx |
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135 | div bx |
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136 | ; !!!!!!! ax = track number, dx = head number |
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137 | mov ch, al ; ch=track number |
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138 | xchg dh, dl ; dh=head number |
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139 | mov dl, 0 ; dl=0 (drive 0 (a:)) |
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140 | pop bx |
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141 | retn |
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142 | ; needed variables |
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143 | BPB_SecPerTrk dw 0 ; sectors per track |
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144 | BPB_NumHeads dw 0 ; number of heads |
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145 | BPB_FATSz16 dw 0 ; size of FAT |
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146 | BPB_RootEntCnt dw 0 ; count of root dir. entries |
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147 | BPB_BytsPerSec dw 0 ; bytes per sector |
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148 | BPB_RsvdSecCnt dw 0 ; number of reserved sectors |
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149 | BPB_TotSec16 dw 0 ; count of the sectors on the volume |
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150 | BPB_SecPerClus db 0 ; number of sectors per cluster |
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151 | BPB_NumFATs db 0 ; number of FAT tables |
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152 | abs_sector_adj dw 0 ; adjustment to make abs. sector number |
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153 | end_of_FAT dw 0 ; end of FAT table |
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154 | FirstDataSector dw 0 ; begin of data |
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155 | |||
156 | ;========================================================================= |
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157 | ; |
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158 | ; 16 BIT CODE |
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159 | ; |
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160 | ;========================================================================= |
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161 | |||
162 | include 'bootvesa.inc' ;Include source for boot vesa |
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163 | if defined extended_primary_loader |
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164 | include 'parsers.inc' |
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165 | end if |
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166 | |||
167 | start_of_code: |
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168 | |||
169 | if defined extended_primary_loader |
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170 | ; save data from primary loader |
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171 | mov word [cs:bootcallback], si |
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172 | mov word [cs:bootcallback+2], ds |
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173 | push cs |
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174 | pop ds |
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175 | mov [bootdevice], ax |
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176 | mov [bootfs], bx |
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177 | |||
178 | ; set up stack |
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179 | mov ax, 3000h |
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180 | mov ss, ax |
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181 | mov sp, 0EC00h |
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182 | |||
183 | ; try to load configuration file |
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184 | mov ax, 1 |
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185 | mov di, config_file_struct |
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186 | call [bootcallback] |
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187 | cld |
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188 | push cs |
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189 | pop es |
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190 | ; bx=0 - ok, bx=1 - part of file loaded, assume this is ok |
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191 | cmp bx, 1 |
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192 | ja .config_bad |
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193 | ; configuration file was loaded, parse |
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194 | ; if length is too big, use first 0FFFFh bytes |
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195 | test dx, dx |
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196 | jz @f |
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197 | mov ax, 0FFFFh |
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198 | @@: |
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199 | ; ds:si will be pointer to current data, dx = limit |
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200 | xchg ax, dx |
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201 | push 4000h |
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202 | pop ds |
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203 | xor si, si |
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204 | .parse_loop: |
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205 | ; skip spaces |
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206 | cmp si, dx |
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207 | jae .parse_done |
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208 | lodsb |
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209 | cmp al, ' ' |
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210 | jbe .parse_loop |
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211 | dec si |
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212 | ; loop over all possible configuration values |
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213 | mov bx, config_file_variables |
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214 | .find_variant: |
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215 | ; get length |
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216 | mov cx, [es:bx] |
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217 | ; zero length = end of list |
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218 | jecxz .find_newline |
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219 | ; skip over length |
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220 | inc bx |
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221 | inc bx |
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222 | mov di, bx |
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223 | ; skip over string |
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224 | add bx, cx |
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225 | ; test whether we have at least cx symbols left |
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226 | mov ax, cx |
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227 | add ax, si |
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228 | jc .next_variant1 |
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229 | cmp ax, dx |
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230 | jae .next_variant1 |
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231 | ; save current position |
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232 | push si |
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233 | ; compare strings |
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234 | repz cmpsb |
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235 | jnz .next_variant2 |
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236 | ; strings are equal; look for "=" with possible spaces before and after |
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237 | @@: |
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238 | cmp si, dx |
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239 | jae .next_variant2 |
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240 | lodsb |
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241 | cmp al, ' ' |
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242 | jbe @b |
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243 | cmp al, '=' |
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244 | jnz .next_variant2 |
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245 | ; ok, we found the true variant |
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246 | ; ignore saved position on the stack |
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247 | pop ax |
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248 | ; call the parser |
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249 | call word [es:bx] |
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250 | ; line parsed, find next |
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251 | .find_newline: |
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252 | cmp si, dx |
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253 | jae .parse_done |
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254 | lodsb |
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255 | cmp al, 13 |
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256 | jz .parse_loop |
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257 | cmp al, 10 |
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258 | jz .parse_loop |
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259 | jmp .find_newline |
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260 | .next_variant2: |
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261 | ; continue to the next variant, restoring current position |
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262 | pop si |
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263 | .next_variant1: |
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264 | ; continue to the next variant |
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265 | ; skip over the parser |
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266 | inc bx |
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267 | inc bx |
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268 | jmp .find_variant |
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269 | .parse_done: |
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270 | .config_bad: |
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271 | |||
272 | ; set up segment registers |
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273 | push cs |
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274 | pop ds |
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275 | else |
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276 | cld |
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277 | ; \begin{diamond}[02.12.2005] |
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278 | ; if bootloader sets ax = 'KL', then ds:si points to loader block |
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279 | cmp ax, 'KL' |
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280 | jnz @f |
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281 | mov word [cs:cfgmanager.loader_block], si |
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282 | mov word [cs:cfgmanager.loader_block+2], ds |
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283 | @@: |
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284 | ; \end{diamond}[02.12.2005] |
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285 | |||
286 | ; if bootloader sets cx = 'HA' and dx = 'RD', then bx contains identifier of source hard disk |
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287 | ; (see comment to bx_from_load) |
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288 | cmp cx, 'HA' |
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289 | jnz no_hd_load |
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290 | cmp dx, 'RD' |
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291 | jnz no_hd_load |
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292 | mov word [cs:bx_from_load], bx ; {SPraid}[13.03.2007] |
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293 | no_hd_load: |
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294 | |||
295 | ; set up stack |
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296 | mov ax, 3000h |
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297 | mov ss, ax |
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298 | mov sp, 0EC00h |
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299 | ; set up segment registers |
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300 | push cs |
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301 | pop ds |
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302 | push cs |
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303 | pop es |
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304 | end if |
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305 | |||
306 | ; set videomode |
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307 | mov ax, 3 |
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308 | int 0x10 |
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309 | |||
310 | if lang eq ru |
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311 | ; Load & set russian VGA font (RU.INC) |
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312 | mov bp, RU_FNT1 ; RU_FNT1 - First part |
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313 | mov bx, 1000h ; 768 bytes |
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314 | mov cx, 30h ; 48 symbols |
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315 | mov dx, 80h ; 128 - position of first symbol |
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316 | mov ax, 1100h |
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317 | int 10h |
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318 | |||
319 | mov bp, RU_FNT2 ; RU_FNT2 -Second part |
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320 | mov bx, 1000h ; 512 bytes |
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321 | mov cx, 20h ; 32 symbols |
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322 | mov dx, 0E0h ; 224 - position of first symbol |
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323 | mov ax, 1100h |
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324 | int 10h |
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325 | ; End set VGA russian font |
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326 | else if lang eq et |
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327 | mov bp, ET_FNT ; ET_FNT1 |
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328 | mov bx, 1000h ; |
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329 | mov cx, 255 ; 256 symbols |
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330 | xor dx, dx ; 0 - position of first symbol |
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331 | mov ax, 1100h |
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332 | int 10h |
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333 | end if |
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334 | |||
335 | ; draw frames |
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336 | push 0xb800 |
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337 | pop es |
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338 | xor di, di |
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339 | mov ah, 1*16+15 |
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340 | |||
341 | ; draw top |
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342 | mov si, d80x25_top |
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343 | mov cx, d80x25_top_num * 80 |
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344 | @@: |
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345 | lodsb |
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346 | stosw |
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347 | loop @b |
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348 | ; draw spaces |
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349 | mov si, space_msg |
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350 | mov dx, 25 - d80x25_top_num - d80x25_bottom_num |
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351 | dfl1: |
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352 | push si |
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353 | mov cx, 80 |
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354 | @@: |
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355 | lodsb |
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356 | stosw |
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357 | loop @b |
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358 | pop si |
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359 | dec dx |
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360 | jnz dfl1 |
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361 | ; draw bottom |
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362 | mov si, d80x25_bottom |
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363 | mov cx, d80x25_bottom_num * 80 |
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364 | @@: |
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365 | lodsb |
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366 | stosw |
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367 | loop @b |
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368 | |||
369 | mov byte [space_msg+80], 0 ; now space_msg is null terminated |
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370 | |||
371 | _setcursor d80x25_top_num,0 |
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372 | |||
373 | |||
374 | ; TEST FOR 386+ |
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375 | |||
376 | mov bx, 0x4000 |
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377 | pushf |
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378 | pop ax |
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379 | mov dx, ax |
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380 | xor ax, bx |
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381 | push ax |
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382 | popf |
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383 | pushf |
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384 | pop ax |
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385 | and ax, bx |
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386 | and dx, bx |
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387 | cmp ax, dx |
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388 | jnz cpugood |
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389 | mov si, not386 |
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390 | sayerr: |
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391 | call print |
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392 | jmp $ |
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393 | cpugood: |
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394 | |||
395 | push 0 |
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396 | popf |
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397 | sti |
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398 | |||
399 | ; set up esp |
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400 | movzx esp, sp |
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401 | |||
402 | push 0 |
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403 | pop es |
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3774 | mario79 | 404 | |
3539 | clevermous | 405 | mov al, 0xf6 ; Сброс клавиатуры, разрешить сканирование |
2288 | clevermous | 406 | out 0x60, al |
407 | xor cx, cx |
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408 | wait_loop: ; variant 2 |
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409 | ; reading state of port of 8042 controller |
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410 | in al, 64h |
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411 | and al, 00000010b ; ready flag |
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412 | ; wait until 8042 controller is ready |
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413 | loopnz wait_loop |
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414 | |||
415 | ;;;/diamond today 5.02.2008 |
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416 | ; set keyboard typematic rate & delay |
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417 | mov al, 0xf3 |
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418 | out 0x60, al |
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419 | xor cx, cx |
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420 | @@: |
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421 | in al, 64h |
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422 | test al, 2 |
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423 | loopnz @b |
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424 | mov al, 0 |
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425 | out 0x60, al |
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426 | xor cx, cx |
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427 | @@: |
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428 | in al, 64h |
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429 | test al, 2 |
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430 | loopnz @b |
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431 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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432 | ; --------------- APM --------------------- |
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2466 | Serge | 433 | and word [es:BOOT_APM_VERSION], 0 ; ver = 0.0 (APM not found) |
2288 | clevermous | 434 | mov ax, 0x5300 |
435 | xor bx, bx |
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436 | int 0x15 |
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437 | jc apm_end ; APM not found |
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438 | test cx, 2 |
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439 | jz apm_end ; APM 32-bit protected-mode interface not supported |
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2466 | Serge | 440 | mov [es:BOOT_APM_VERSION], ax ; Save APM Version |
441 | mov [es:BOOT_APM_FLAGS], cx ; Save APM flags |
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2288 | clevermous | 442 | |
443 | ; Write APM ver ---- |
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444 | and ax, 0xf0f |
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445 | add ax, '00' |
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446 | mov si, msg_apm |
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447 | mov [si + 5], ah |
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448 | mov [si + 7], al |
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449 | _setcursor 0, 3 |
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450 | call printplain |
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451 | ; ------------------ |
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452 | |||
453 | mov ax, 0x5304 ; Disconnect interface |
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454 | xor bx, bx |
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455 | int 0x15 |
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456 | mov ax, 0x5303 ; Connect 32 bit mode interface |
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457 | xor bx, bx |
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458 | int 0x15 |
||
459 | |||
2466 | Serge | 460 | mov [es:BOOT_APM_ENTRY], ebx |
461 | mov [es:BOOT_APM_CODE_32], ax |
||
462 | mov [es:BOOT_APM_CODE_16], cx |
||
463 | mov [es:BOOT_APM_DATA_16], dx |
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2288 | clevermous | 464 | |
465 | apm_end: |
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466 | _setcursor d80x25_top_num, 0 |
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467 | |||
468 | if ~ defined extended_primary_loader |
||
469 | ;CHECK current of code |
||
470 | cmp [cfgmanager.loader_block], -1 |
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471 | jz noloaderblock |
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472 | les bx, [cfgmanager.loader_block] |
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473 | cmp byte [es:bx], 1 |
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474 | mov si, loader_block_error |
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475 | jnz sayerr |
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476 | push 0 |
||
477 | pop es |
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478 | end if |
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479 | |||
480 | noloaderblock: |
||
481 | ; DISPLAY VESA INFORMATION |
||
482 | call print_vesa_info |
||
483 | call calc_vmodes_table |
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484 | call check_first_parm ;check and enable cursor_pos |
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485 | |||
486 | ; \begin{diamond}[30.11.2005] |
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487 | cfgmanager: |
||
488 | ; settings: |
||
489 | ; a) preboot_graph = graphical mode |
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490 | ; preboot_gprobe = probe this mode? |
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3777 | yogev_ezra | 491 | ; b) preboot_biosdisk = use BIOS disks through V86 emulation? // (earlier was: preboot_dma = use DMA access?) |
492 | ; c) preboot_debug = duplicates kernel debug output to the screen // (earlier was: preboot_vrrm = use VRR?) |
||
493 | ; // VRR is an obsolete functionality, used only with CRT monitors: increase display frequency by reducing screen resolution |
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494 | ; d) preboot_launcher = start the first app (right now it's LAUNCHER) after kernel is loaded? |
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495 | ; e) preboot_device = from where to boot? |
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2288 | clevermous | 496 | |
497 | ; determine default settings |
||
498 | if ~ defined extended_primary_loader |
||
499 | mov [.bSettingsChanged], 0 |
||
500 | end if |
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501 | |||
502 | ;.preboot_gr_end: |
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503 | mov di, preboot_device |
||
504 | ; if image in memory is present and [preboot_device] is uninitialized, |
||
505 | ; set it to use this preloaded image |
||
506 | cmp byte [di], 0 |
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507 | jnz .preboot_device_inited |
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508 | if defined extended_primary_loader |
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509 | inc byte [di] |
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510 | cmp byte [bootdevice], 'f' ; floppy? |
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511 | jz .preboot_device_inited |
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512 | inc byte [di] |
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513 | else |
||
514 | cmp [.loader_block], -1 |
||
515 | jz @f |
||
516 | les bx, [.loader_block] |
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517 | test byte [es:bx+1], 1 |
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518 | jz @f |
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519 | mov byte [di], 3 |
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520 | jmp .preboot_device_inited |
||
521 | @@: |
||
522 | ; otherwise, set [preboot_device] to 1 (default value - boot from floppy) |
||
523 | mov byte [di], 1 |
||
524 | end if |
||
525 | .preboot_device_inited: |
||
526 | ; following 4 lines set variables to 1 if its current value is 0 |
||
527 | cmp byte [di+preboot_dma-preboot_device], 1 |
||
528 | adc byte [di+preboot_dma-preboot_device], 0 |
||
3777 | yogev_ezra | 529 | cmp byte [di+preboot_launcher-preboot_device], 1 ; Start LAUNCHER by default |
530 | adc byte [di+preboot_launcher-preboot_device], 0 |
||
3702 | mario79 | 531 | ; cmp byte [di+preboot_biosdisk-preboot_device], 1 |
532 | ; adc byte [di+preboot_biosdisk-preboot_device], 0 |
||
2288 | clevermous | 533 | ;; default value for VRR is OFF |
534 | ; cmp byte [di+preboot_vrrm-preboot_device], 0 |
||
535 | ; jnz @f |
||
536 | ; mov byte [di+preboot_vrrm-preboot_device], 2 |
||
537 | ;@@: |
||
538 | ; notify user |
||
539 | _setcursor 5,2 |
||
540 | |||
541 | mov si, linef |
||
542 | call printplain |
||
543 | mov si, start_msg |
||
544 | call print |
||
545 | mov si, time_msg |
||
546 | call print |
||
547 | ; get start time |
||
548 | call .gettime |
||
549 | mov [.starttime], eax |
||
550 | mov word [.timer], .newtimer |
||
551 | mov word [.timer+2], cs |
||
552 | .printcfg: |
||
553 | |||
554 | _setcursor 9,0 |
||
555 | mov si, current_cfg_msg |
||
556 | call print |
||
557 | mov si, curvideo_msg |
||
558 | call print |
||
559 | |||
560 | call draw_current_vmode |
||
561 | |||
562 | mov si, usebd_msg |
||
563 | cmp [preboot_biosdisk], 1 |
||
564 | call .say_on_off |
||
565 | ; mov si, vrrm_msg |
||
566 | ; cmp [preboot_vrrm], 1 |
||
567 | ; call .say_on_off |
||
3777 | yogev_ezra | 568 | mov si, debug_mode_msg |
569 | cmp [preboot_debug], 1 |
||
570 | call .say_on_off |
||
571 | mov si, launcher_msg |
||
572 | cmp [preboot_launcher], 1 |
||
573 | call .say_on_off |
||
2288 | clevermous | 574 | mov si, preboot_device_msg |
575 | call print |
||
576 | mov al, [preboot_device] |
||
577 | if defined extended_primary_loader |
||
578 | and eax, 3 |
||
579 | else |
||
580 | and eax, 7 |
||
581 | end if |
||
582 | mov si, [preboot_device_msgs+eax*2] |
||
583 | call printplain |
||
584 | .show_remarks: |
||
585 | ; show remarks in gray color |
||
586 | mov di, ((21-num_remarks)*80 + 2)*2 |
||
587 | push 0xB800 |
||
588 | pop es |
||
589 | mov cx, num_remarks |
||
590 | mov si, remarks |
||
591 | .write_remarks: |
||
592 | lodsw |
||
593 | push si |
||
594 | xchg ax, si |
||
595 | mov ah, 1*16+7 ; background: blue (1), foreground: gray (7) |
||
596 | push di |
||
597 | .write_remark: |
||
598 | lodsb |
||
599 | test al, al |
||
600 | jz @f |
||
601 | stosw |
||
602 | jmp .write_remark |
||
603 | @@: |
||
604 | pop di |
||
605 | pop si |
||
606 | add di, 80*2 |
||
607 | loop .write_remarks |
||
608 | .wait: |
||
609 | _setcursor 25,0 ; out of screen |
||
610 | ; set timer interrupt handler |
||
611 | cli |
||
612 | push 0 |
||
613 | pop es |
||
614 | push dword [es:8*4] |
||
615 | pop dword [.oldtimer] |
||
616 | push dword [.timer] |
||
617 | pop dword [es:8*4] |
||
618 | ; mov eax, [es:8*4] |
||
619 | ; mov [.oldtimer], eax |
||
620 | ; mov eax, [.timer] |
||
621 | ; mov [es:8*4], eax |
||
622 | sti |
||
623 | ; wait for keypressed |
||
624 | xor ax, ax |
||
625 | int 16h |
||
626 | push ax |
||
627 | ; restore timer interrupt |
||
628 | ; push 0 |
||
629 | ; pop es |
||
630 | mov eax, [.oldtimer] |
||
631 | mov [es:8*4], eax |
||
632 | mov [.timer], eax |
||
633 | |||
634 | _setcursor 7,0 |
||
635 | mov si, space_msg |
||
636 | call printplain |
||
637 | ; clear remarks and restore normal attributes |
||
638 | push es |
||
639 | mov di, ((21-num_remarks)*80 + 2)*2 |
||
640 | push 0xB800 |
||
641 | pop es |
||
642 | mov cx, num_remarks |
||
643 | mov ax, ' ' + (1*16 + 15)*100h |
||
644 | @@: |
||
645 | push cx |
||
646 | mov cx, 76 |
||
647 | rep stosw |
||
648 | pop cx |
||
649 | add di, 4*2 |
||
650 | loop @b |
||
651 | pop es |
||
652 | pop ax |
||
653 | ; switch on key |
||
654 | cmp al, 13 |
||
655 | jz .continue |
||
656 | or al, 20h |
||
3777 | yogev_ezra | 657 | cmp al, 'a' ; select graphical mode |
2288 | clevermous | 658 | jz .change_a |
3760 | hidnplayr | 659 | cmp al, 'q' ; Trick to make 'A' key on azerty keyboard work |
660 | je .change_a |
||
3777 | yogev_ezra | 661 | cmp al, 'b' ; use BIOS disks? // (selecting YES will make BIOS disks visible as /bd) |
2288 | clevermous | 662 | jz .change_b |
3777 | yogev_ezra | 663 | cmp al, 'c' ; load kernel in debug mode? // (earlier was: use VRR?) |
664 | jz .change_c |
||
665 | cmp al, 'd' ; start launcher after kernel is loaded? |
||
666 | jz .change_d |
||
667 | cmp al, 'e' ; select boot origin |
||
2288 | clevermous | 668 | jnz .show_remarks |
3777 | yogev_ezra | 669 | ; e) preboot_device = from where to boot? |
2288 | clevermous | 670 | if defined extended_primary_loader |
3989 | yogev_ezra | 671 | _ask_question bdev,'12',preboot_device ; range accepted for answer: 1-2 |
2288 | clevermous | 672 | else |
3989 | yogev_ezra | 673 | _ask_question bdev,'14',preboot_device ; range accepted for answer: 1-4 |
674 | end if |
||
3777 | yogev_ezra | 675 | _setcursor 14,0 |
3989 | yogev_ezra | 676 | |
2288 | clevermous | 677 | .d: |
678 | if ~ defined extended_primary_loader |
||
679 | mov [.bSettingsChanged], 1 |
||
680 | end if |
||
3989 | yogev_ezra | 681 | .esc_pressed: |
2288 | clevermous | 682 | call clear_vmodes_table ;clear vmodes_table |
683 | jmp .printcfg |
||
3989 | yogev_ezra | 684 | |
2288 | clevermous | 685 | .change_a: |
3797 | mario79 | 686 | call clear_vmodes_table ;clear vmodes_table |
3999 | mario79 | 687 | |
688 | mov si, word [cursor_pos] |
||
689 | mov word [cursor_pos_old], si |
||
2288 | clevermous | 690 | .loops: |
691 | call draw_vmodes_table |
||
692 | _setcursor 25,0 ; out of screen |
||
693 | xor ax, ax |
||
694 | int 0x16 |
||
695 | ; call clear_table_cursor ;clear current position of cursor |
||
696 | |||
697 | mov si, word [cursor_pos] |
||
698 | |||
3989 | yogev_ezra | 699 | cmp al, 27 ; If ESC was pressed, do not change the value |
3999 | mario79 | 700 | jnz @f ; Just exit the resolution selection box |
701 | |||
702 | mov si, word [cursor_pos_old] |
||
703 | mov word [cursor_pos], si |
||
704 | jmp .esc_pressed |
||
705 | @@: |
||
2288 | clevermous | 706 | cmp ah, 0x48;x,0x48E0 ; up |
707 | jne .down |
||
708 | cmp si, modes_table |
||
709 | jbe .loops |
||
710 | sub word [cursor_pos], size_of_step |
||
711 | jmp .loops |
||
712 | |||
713 | .down: |
||
714 | cmp ah, 0x50;x,0x50E0 ; down |
||
715 | jne .pgup |
||
716 | cmp word[es:si+10], -1 |
||
717 | je .loops |
||
718 | add word [cursor_pos], size_of_step |
||
719 | jmp .loops |
||
720 | |||
721 | .pgup: |
||
722 | cmp ah, 0x49 ; page up |
||
723 | jne .pgdn |
||
724 | sub si, size_of_step*long_v_table |
||
725 | cmp si, modes_table |
||
726 | jae @f |
||
727 | mov si, modes_table |
||
728 | @@: |
||
729 | mov word [cursor_pos], si |
||
730 | mov si, word [home_cursor] |
||
731 | sub si, size_of_step*long_v_table |
||
732 | cmp si, modes_table |
||
733 | jae @f |
||
734 | mov si, modes_table |
||
735 | @@: |
||
736 | mov word [home_cursor], si |
||
737 | jmp .loops |
||
738 | |||
739 | .pgdn: |
||
740 | cmp ah, 0x51 ; page down |
||
741 | jne .enter |
||
742 | mov ax, [end_cursor] |
||
743 | add si, size_of_step*long_v_table |
||
744 | cmp si, ax |
||
745 | jb @f |
||
746 | mov si, ax |
||
747 | sub si, size_of_step |
||
748 | @@: |
||
749 | mov word [cursor_pos], si |
||
750 | mov si, word [home_cursor] |
||
751 | sub ax, size_of_step*long_v_table |
||
752 | add si, size_of_step*long_v_table |
||
753 | cmp si, ax |
||
754 | jb @f |
||
755 | mov si, ax |
||
756 | @@: |
||
757 | mov word [home_cursor], si |
||
758 | jmp .loops |
||
759 | |||
760 | .enter: |
||
761 | cmp al, 0x0D;x,0x1C0D ; enter |
||
762 | jne .loops |
||
763 | push word [cursor_pos] |
||
764 | pop bp |
||
765 | push word [es:bp] |
||
766 | pop word [x_save] |
||
767 | push word [es:bp+2] |
||
768 | pop word [y_save] |
||
769 | push word [es:bp+6] |
||
770 | pop word [number_vm] |
||
771 | mov word [preboot_graph], bp ;save choose |
||
772 | |||
773 | jmp .d |
||
774 | |||
3777 | yogev_ezra | 775 | .change_b: ; b) preboot_biosdisk = use BIOS disks through V86 emulation? |
3989 | yogev_ezra | 776 | ; _setcursor 16,0 |
3777 | yogev_ezra | 777 | ; mov si, ask_dma // (earlier was: preboot_dma = use DMA access?) |
2288 | clevermous | 778 | ; call print |
3796 | yogev_ezra | 779 | ; mov bx, '13' ; range accepted for answer: 1-3 |
2288 | clevermous | 780 | ; call getkey |
781 | ; mov [preboot_dma], al |
||
3989 | yogev_ezra | 782 | _ask_question ask_bd,'12',preboot_biosdisk ; range accepted for answer: 1-2 |
2288 | clevermous | 783 | _setcursor 11,0 |
784 | jmp .d |
||
3777 | yogev_ezra | 785 | ;.change_c: ; // VRR is an obsolete functionality, used only with CRT monitors |
786 | ; _setcursor 16,0 |
||
2288 | clevermous | 787 | ; mov si, vrrmprint |
788 | ; call print |
||
3796 | yogev_ezra | 789 | ; mov bx, '12' ; range accepted for answer: 1-2 |
2288 | clevermous | 790 | ; call getkey |
791 | ; mov [preboot_vrrm], al |
||
792 | ; _setcursor 12,0 |
||
793 | ; jmp .d |
||
3796 | yogev_ezra | 794 | .change_c: ; c) preboot_debug = duplicates kernel debug output to the screen |
3989 | yogev_ezra | 795 | _ask_question ask_debug,'12',preboot_debug ; range accepted for answer: 1-2 |
3777 | yogev_ezra | 796 | _setcursor 12,0 |
797 | jmp .d |
||
3796 | yogev_ezra | 798 | .change_d: ; d) preboot_launcher = start the first app (right now it's LAUNCHER) after kernel is loaded? |
3989 | yogev_ezra | 799 | _ask_question ask_launcher,'12',preboot_launcher ; range accepted for answer: 1-2 |
3777 | yogev_ezra | 800 | _setcursor 13,0 |
801 | jmp .d |
||
2288 | clevermous | 802 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
803 | .say_on_off: |
||
804 | pushf |
||
805 | call print |
||
806 | mov si, on_msg |
||
807 | popf |
||
808 | jz @f |
||
809 | mov si, off_msg |
||
810 | @@: |
||
811 | jmp printplain |
||
812 | ; novesa and vervesa strings are not used at the moment of executing this code |
||
813 | virtual at novesa |
||
814 | .oldtimer dd ? |
||
815 | .starttime dd ? |
||
816 | if ~ defined extended_primary_loader |
||
817 | .bSettingsChanged db ? |
||
818 | end if |
||
819 | .timer dd ? |
||
820 | end virtual |
||
821 | if ~ defined extended_primary_loader |
||
822 | .loader_block dd -1 |
||
823 | end if |
||
824 | .gettime: |
||
825 | mov ah, 0 |
||
826 | int 1Ah |
||
827 | xchg ax, cx |
||
828 | shl eax, 10h |
||
829 | xchg ax, dx |
||
830 | ret |
||
831 | .newtimer: |
||
832 | push ds |
||
833 | push cs |
||
834 | pop ds |
||
835 | pushf |
||
836 | call [.oldtimer] |
||
837 | pushad |
||
838 | call .gettime |
||
839 | sub eax, [.starttime] |
||
840 | if defined extended_primary_loader |
||
841 | sub ax, [preboot_timeout] |
||
842 | else |
||
843 | sub ax, 18*5 |
||
844 | end if |
||
845 | jae .timergo |
||
846 | neg ax |
||
847 | add ax, 18-1 |
||
848 | mov bx, 18 |
||
849 | xor dx, dx |
||
850 | div bx |
||
851 | if lang eq ru |
||
3539 | clevermous | 852 | ; подождите 5 секунд, 4/3/2 секунды, 1 секунду |
2288 | clevermous | 853 | cmp al, 5 |
854 | mov cl, ' ' |
||
855 | jae @f |
||
856 | cmp al, 1 |
||
3539 | clevermous | 857 | mov cl, 0xE3 ; 'у' in cp866 |
2288 | clevermous | 858 | jz @f |
3539 | clevermous | 859 | mov cl, 0xEB ; 'ы' in cp866 |
2288 | clevermous | 860 | @@: |
861 | mov [time_str+9], cl |
||
862 | else if lang eq et |
||
863 | cmp al, 1 |
||
864 | ja @f |
||
3539 | clevermous | 865 | mov byte [time_str+9], ' ' |
866 | mov byte [time_str+10], ' ' |
||
2288 | clevermous | 867 | @@: |
3274 | esevece | 868 | else if lang eq sp |
869 | ; esperar 5/4/3/2 segundos, 1 segundo |
||
870 | cmp al, 1 |
||
871 | mov cl, 's' |
||
872 | ja @f |
||
873 | mov cl, ' ' |
||
874 | @@: |
||
875 | mov [time_str+10], cl |
||
2288 | clevermous | 876 | else |
877 | ; wait 5/4/3/2 seconds, 1 second |
||
878 | cmp al, 1 |
||
879 | mov cl, 's' |
||
880 | ja @f |
||
881 | mov cl, ' ' |
||
882 | @@: |
||
883 | mov [time_str+9], cl |
||
884 | end if |
||
885 | add al, '0' |
||
886 | mov [time_str+1], al |
||
887 | mov si, time_msg |
||
888 | _setcursor 7,0 |
||
889 | call print |
||
890 | _setcursor 25,0 |
||
891 | popad |
||
892 | pop ds |
||
893 | iret |
||
894 | .timergo: |
||
895 | push 0 |
||
896 | pop es |
||
897 | mov eax, [.oldtimer] |
||
898 | mov [es:8*4], eax |
||
899 | mov sp, 0EC00h |
||
900 | .continue: |
||
901 | sti |
||
902 | _setcursor 6,0 |
||
903 | mov si, space_msg |
||
904 | call printplain |
||
905 | call printplain |
||
906 | _setcursor 6,0 |
||
907 | mov si, loading_msg |
||
908 | call print |
||
3777 | yogev_ezra | 909 | _setcursor 16,0 |
2288 | clevermous | 910 | if ~ defined extended_primary_loader |
911 | cmp [.bSettingsChanged], 0 |
||
912 | jz .load |
||
913 | cmp [.loader_block], -1 |
||
914 | jz .load |
||
915 | les bx, [.loader_block] |
||
916 | mov eax, [es:bx+3] |
||
917 | push ds |
||
918 | pop es |
||
919 | test eax, eax |
||
920 | jz .load |
||
921 | push eax |
||
922 | mov si, save_quest |
||
923 | call print |
||
924 | .waityn: |
||
925 | mov ah, 0 |
||
926 | int 16h |
||
927 | or al, 20h |
||
928 | cmp al, 'n' |
||
929 | jz .loadc |
||
3430 | esevece | 930 | if lang eq sp |
931 | cmp al, 's' |
||
932 | else |
||
2288 | clevermous | 933 | cmp al, 'y' |
3430 | esevece | 934 | end if |
2288 | clevermous | 935 | jnz .waityn |
936 | call putchar |
||
937 | mov byte [space_msg+80], 186 |
||
938 | |||
939 | pop eax |
||
940 | push cs |
||
941 | push .cont |
||
942 | push eax |
||
943 | retf ;call back |
||
944 | .loadc: |
||
945 | pop eax |
||
946 | .cont: |
||
947 | push cs |
||
948 | pop ds |
||
949 | mov si, space_msg |
||
950 | mov byte [si+80], 0 |
||
3777 | yogev_ezra | 951 | _setcursor 16,0 |
2288 | clevermous | 952 | call printplain |
3777 | yogev_ezra | 953 | _setcursor 16,0 |
2288 | clevermous | 954 | .load: |
955 | end if |
||
956 | ; \end{diamond}[02.12.2005] |
||
957 | |||
958 | ; ASK GRAPHICS MODE |
||
959 | |||
960 | call set_vmode |
||
961 | |||
962 | ; GRAPHICS ACCELERATION |
||
963 | ; force yes |
||
2466 | Serge | 964 | mov [es:BOOT_MTRR], byte 1 |
2288 | clevermous | 965 | |
966 | ; DMA ACCESS TO HD |
||
967 | |||
968 | mov al, [preboot_dma] |
||
2466 | Serge | 969 | mov [es:BOOT_DMA], al |
2288 | clevermous | 970 | |
971 | ;; VRR_M USE |
||
972 | ; |
||
973 | ; mov al,[preboot_vrrm] |
||
3777 | yogev_ezra | 974 | ; mov [es:BOOT_VRR], al ;// 0x9030 |
2288 | clevermous | 975 | |
3777 | yogev_ezra | 976 | ; Set kernel DEBUG mode - if nonzero, duplicates debug output to the screen. |
977 | mov al, [preboot_debug] |
||
978 | mov [es:BOOT_DEBUG_PRINT], al ;// 0x901E |
||
979 | |||
980 | ; Start the first app (right now it's LAUNCHER) after kernel is loaded? |
||
981 | mov al, [preboot_launcher] |
||
982 | mov [es:BOOT_LAUNCHER_START], al ;// 0x901D |
||
983 | |||
2288 | clevermous | 984 | ; BOOT DEVICE |
985 | |||
986 | mov al, [preboot_device] |
||
987 | dec al |
||
988 | mov [boot_dev], al |
||
989 | |||
990 | ; GET MEMORY MAP |
||
991 | include '../detect/biosmem.inc' |
||
992 | |||
993 | ; READ DISKETTE TO MEMORY |
||
994 | |||
995 | cmp [boot_dev], 0 |
||
996 | jne no_sys_on_floppy |
||
997 | mov si, diskload |
||
998 | call print |
||
999 | xor ax, ax ; reset drive |
||
1000 | xor dx, dx |
||
1001 | int 0x13 |
||
1002 | ; do we boot from CD-ROM? |
||
1003 | mov ah, 41h |
||
1004 | mov bx, 55AAh |
||
1005 | xor dx, dx |
||
1006 | int 0x13 |
||
1007 | jc .nocd |
||
1008 | cmp bx, 0AA55h |
||
1009 | jnz .nocd |
||
1010 | mov ah, 48h |
||
1011 | push ds |
||
1012 | push es |
||
1013 | pop ds |
||
1014 | mov si, 0xa000 |
||
1015 | mov word [si], 30 |
||
1016 | int 0x13 |
||
1017 | pop ds |
||
1018 | jc .nocd |
||
1019 | push ds |
||
1020 | lds si, [es:si+26] |
||
1021 | test byte [ds:si+10], 40h |
||
1022 | pop ds |
||
1023 | jz .nocd |
||
1024 | ; yes - read all floppy by 18 sectors |
||
1025 | |||
1026 | ; TODO: !!!! read only first sector and set variables !!!!! |
||
1027 | ; ... |
||
1028 | ; TODO: !!! then read flippy image track by track |
||
1029 | |||
1030 | mov cx, 0x0001 ; startcyl,startsector |
||
1031 | .a1: |
||
1032 | push cx dx |
||
1033 | mov al, 18 |
||
1034 | mov bx, 0xa000 |
||
1035 | call boot_read_floppy |
||
1036 | mov si, movedesc |
||
1037 | push es |
||
1038 | push ds |
||
1039 | pop es |
||
1040 | mov cx, 256*18 |
||
1041 | mov ah, 0x87 |
||
1042 | int 0x15 |
||
1043 | pop es |
||
1044 | pop dx cx |
||
1045 | test ah, ah |
||
1046 | jnz sayerr_floppy |
||
1047 | add dword [si+8*3+2], 512*18 |
||
1048 | inc dh |
||
1049 | cmp dh, 2 |
||
1050 | jnz .a1 |
||
1051 | mov dh, 0 |
||
1052 | inc ch |
||
1053 | cmp ch, 80 |
||
1054 | jae ok_sys_on_floppy |
||
1055 | pusha |
||
1056 | mov al, ch |
||
1057 | shr ch, 2 |
||
1058 | add al, ch |
||
1059 | aam |
||
1060 | xchg al, ah |
||
1061 | add ax, '00' |
||
1062 | mov si, pros |
||
1063 | mov [si], ax |
||
1064 | call printplain |
||
1065 | popa |
||
1066 | jmp .a1 |
||
1067 | .nocd: |
||
1068 | ; no - read only used sectors from floppy |
||
1069 | ; now load floppy image to memory |
||
1070 | ; at first load boot sector and first FAT table |
||
1071 | |||
1072 | ; read only first sector and fill variables |
||
1073 | mov cx, 0x0001 ; first logical sector |
||
1074 | xor dx, dx ; head = 0, drive = 0 (a:) |
||
1075 | mov al, 1 ; read one sector |
||
1076 | mov bx, 0xB000 ; es:bx -> data area |
||
1077 | call boot_read_floppy |
||
1078 | ; fill the necessary parameters to work with a floppy |
||
1079 | mov ax, word [es:bx+24] |
||
1080 | mov word [BPB_SecPerTrk], ax |
||
1081 | mov ax, word [es:bx+26] |
||
1082 | mov word [BPB_NumHeads], ax |
||
1083 | mov ax, word [es:bx+17] |
||
1084 | mov word [BPB_RootEntCnt], ax |
||
1085 | mov ax, word [es:bx+14] |
||
1086 | mov word [BPB_RsvdSecCnt], ax |
||
1087 | mov ax, word [es:bx+19] |
||
1088 | mov word [BPB_TotSec16], ax |
||
1089 | mov al, byte [es:bx+13] |
||
1090 | mov byte [BPB_SecPerClus], al |
||
1091 | mov al, byte [es:bx+16] |
||
1092 | mov byte [BPB_NumFATs], al |
||
1093 | ; |
||
1094 | mov ax, word [es:bx+22] |
||
1095 | mov word [BPB_FATSz16], ax |
||
1096 | mov cx, word [es:bx+11] |
||
1097 | mov word [BPB_BytsPerSec], cx |
||
1098 | |||
1099 | ; count of clusters in FAT12 ((size_of_FAT*2)/3) |
||
1100 | ; mov ax, word [BPB_FATSz16] |
||
1101 | ; mov cx, word [BPB_BytsPerSec] |
||
1102 | ;end |
||
1103 | xor dx, dx |
||
1104 | mul cx |
||
1105 | shl ax, 1 |
||
1106 | mov cx, 3 |
||
1107 | div cx ; now ax - number of clusters in FAT12 |
||
1108 | mov word [end_of_FAT], ax |
||
1109 | |||
1110 | ; load first FAT table |
||
1111 | mov cx, 0x0002 ; startcyl,startsector ; TODO!!!!! |
||
1112 | xor dx, dx ; starthead,drive |
||
1113 | mov al, byte [BPB_FATSz16] ; no of sectors to read |
||
1114 | add bx, word [BPB_BytsPerSec] ; es:bx -> data area |
||
1115 | call boot_read_floppy |
||
1116 | mov bx, 0xB000 |
||
1117 | |||
1118 | ; and copy them to extended memory |
||
1119 | mov si, movedesc |
||
1120 | mov [si+8*2+3], bh ; from |
||
1121 | |||
1122 | mov ax, word [BPB_BytsPerSec] |
||
1123 | shr ax, 1 ; words per sector |
||
1124 | mov cx, word [BPB_RsvdSecCnt] |
||
1125 | add cx, word [BPB_FATSz16] |
||
1126 | mul cx |
||
1127 | push ax ; save to stack count of words in boot+FAT |
||
1128 | xchg ax, cx |
||
1129 | |||
1130 | push es |
||
1131 | push ds |
||
1132 | pop es |
||
1133 | mov ah, 0x87 |
||
1134 | int 0x15 |
||
1135 | pop es |
||
1136 | test ah, ah |
||
1137 | jz @f |
||
1138 | sayerr_floppy: |
||
1139 | mov dx, 0x3f2 |
||
1140 | mov al, 0 |
||
1141 | out dx, al |
||
1142 | sayerr_memmove: |
||
1143 | mov si, memmovefailed |
||
1144 | jmp sayerr_plain |
||
1145 | @@: |
||
1146 | pop ax ; restore from stack count of words in boot+FAT |
||
1147 | shl ax, 1 ; make bytes count from count of words |
||
1148 | and eax, 0ffffh |
||
1149 | add dword [si+8*3+2], eax |
||
1150 | |||
1151 | ; copy first FAT to second copy |
||
1152 | ; TODO: BPB_NumFATs !!!!! |
||
1153 | add bx, word [BPB_BytsPerSec] ; !!! TODO: may be need multiply by BPB_RsvdSecCnt !!! |
||
1154 | mov byte [si+8*2+3], bh ; bx - begin of FAT |
||
1155 | |||
1156 | mov ax, word [BPB_BytsPerSec] |
||
1157 | shr ax, 1 ; words per sector |
||
1158 | mov cx, word [BPB_FATSz16] |
||
1159 | mul cx |
||
1160 | mov cx, ax ; cx - count of words in FAT |
||
1161 | |||
1162 | push es |
||
1163 | push ds |
||
1164 | pop es |
||
1165 | mov ah, 0x87 |
||
1166 | int 0x15 |
||
1167 | pop es |
||
1168 | test ah, ah |
||
1169 | jnz sayerr_floppy |
||
1170 | |||
1171 | mov ax, cx |
||
1172 | shl ax, 1 |
||
1173 | and eax, 0ffffh ; ax - count of bytes in FAT |
||
1174 | add dword [si+8*3+2], eax |
||
1175 | |||
1176 | ; reading RootDir |
||
1177 | ; TODO: BPB_NumFATs |
||
1178 | add bx, ax |
||
1179 | add bx, 100h |
||
1180 | and bx, 0ff00h ; bx - place in buffer to write RootDir |
||
1181 | push bx |
||
1182 | |||
1183 | mov bx, word [BPB_BytsPerSec] |
||
1184 | shr bx, 5 ; divide bx by 32 |
||
1185 | mov ax, word [BPB_RootEntCnt] |
||
1186 | xor dx, dx |
||
1187 | div bx |
||
1188 | push ax ; ax - count of RootDir sectors |
||
1189 | |||
1190 | mov ax, word [BPB_FATSz16] |
||
1191 | xor cx, cx |
||
1192 | mov cl, byte [BPB_NumFATs] |
||
1193 | mul cx |
||
1194 | add ax, word [BPB_RsvdSecCnt] ; ax - first sector of RootDir |
||
1195 | |||
1196 | mov word [FirstDataSector], ax |
||
1197 | pop bx |
||
1198 | push bx |
||
1199 | add word [FirstDataSector], bx ; Begin of data region of floppy |
||
1200 | |||
1201 | ; read RootDir |
||
1202 | call conv_abs_to_THS |
||
1203 | pop ax |
||
1204 | pop bx ; place in buffer to write |
||
1205 | push ax |
||
1206 | call boot_read_floppy ; read RootDir into buffer |
||
1207 | ; copy RootDir |
||
1208 | mov byte [si+8*2+3], bh ; from buffer |
||
1209 | pop ax ; ax = count of RootDir sectors |
||
1210 | mov cx, word [BPB_BytsPerSec] |
||
1211 | mul cx |
||
1212 | shr ax, 1 |
||
1213 | mov cx, ax ; count of words to copy |
||
1214 | push es |
||
1215 | push ds |
||
1216 | pop es |
||
1217 | mov ah, 0x87 |
||
1218 | int 0x15 |
||
1219 | pop es |
||
1220 | |||
1221 | mov ax, cx |
||
1222 | shl ax, 1 |
||
1223 | and eax, 0ffffh ; ax - count of bytes in RootDir |
||
1224 | add dword [si+8*3+2], eax ; add count of bytes copied |
||
1225 | |||
1226 | ; Reading data clusters from floppy |
||
1227 | mov byte [si+8*2+3], bh |
||
1228 | push bx |
||
1229 | |||
1230 | mov di, 2 ; First data cluster |
||
1231 | .read_loop: |
||
1232 | mov bx, di |
||
1233 | shr bx, 1 ; bx+di = di*1.5 |
||
1234 | jnc .even |
||
1235 | test word [es:bx+di+0xB200], 0xFFF0 ; TODO: may not be 0xB200 !!! |
||
1236 | jmp @f |
||
1237 | .even: |
||
1238 | test word [es:bx+di+0xB200], 0xFFF ; TODO: may not be 0xB200 !!! |
||
1239 | |||
1240 | @@: |
||
1241 | jz .skip |
||
1242 | ; read cluster di |
||
1243 | ;.read: |
||
1244 | ;conv cluster di to abs. sector ax |
||
1245 | ; ax = (N-2) * BPB_SecPerClus + FirstDataSector |
||
1246 | mov ax, di |
||
1247 | sub ax, 2 |
||
1248 | xor bx, bx |
||
1249 | mov bl, byte [BPB_SecPerClus] |
||
1250 | mul bx |
||
1251 | add ax, word [FirstDataSector] |
||
1252 | call conv_abs_to_THS |
||
1253 | pop bx |
||
1254 | push bx |
||
1255 | mov al, byte [BPB_SecPerClus] ; number of sectors in cluster |
||
1256 | call boot_read_floppy |
||
1257 | push es |
||
1258 | push ds |
||
1259 | pop es |
||
1260 | pusha |
||
1261 | ; |
||
1262 | mov ax, word [BPB_BytsPerSec] |
||
1263 | xor cx, cx |
||
1264 | mov cl, byte [BPB_SecPerClus] |
||
1265 | mul cx |
||
1266 | shr ax, 1 ; ax = (BPB_BytsPerSec * BPB_SecPerClus)/2 |
||
1267 | mov cx, ax ; number of words to copy (count words in cluster) |
||
1268 | ; |
||
1269 | mov ah, 0x87 |
||
1270 | int 0x15 ; copy data |
||
1271 | test ah, ah |
||
1272 | popa |
||
1273 | pop es |
||
1274 | jnz sayerr_floppy |
||
1275 | ; skip cluster di |
||
1276 | .skip: |
||
1277 | mov ax, word [BPB_BytsPerSec] |
||
1278 | xor cx, cx |
||
1279 | mov cl, byte [BPB_SecPerClus] |
||
1280 | mul cx |
||
1281 | and eax, 0ffffh ; ax - count of bytes in cluster |
||
1282 | add dword [si+8*3+2], eax |
||
1283 | |||
1284 | mov ax, word [end_of_FAT] ; max cluster number |
||
1285 | pusha |
||
1286 | ; draw percentage |
||
1287 | ; total clusters: ax |
||
1288 | ; read clusters: di |
||
1289 | xchg ax, di |
||
1290 | mov cx, 100 |
||
1291 | mul cx |
||
1292 | div di |
||
1293 | aam |
||
1294 | xchg al, ah |
||
1295 | add ax, '00' |
||
1296 | mov si, pros |
||
1297 | cmp [si], ax |
||
1298 | jz @f |
||
1299 | mov [si], ax |
||
1300 | call printplain |
||
1301 | @@: |
||
1302 | popa |
||
1303 | inc di |
||
1304 | cmp di, word [end_of_FAT] ; max number of cluster |
||
1305 | jnz .read_loop |
||
1306 | pop bx ; clear stack |
||
1307 | |||
1308 | ok_sys_on_floppy: |
||
1309 | mov si, backspace2 |
||
1310 | call printplain |
||
1311 | mov si, okt |
||
1312 | call printplain |
||
1313 | no_sys_on_floppy: |
||
1314 | xor ax, ax ; reset drive |
||
1315 | xor dx, dx |
||
1316 | int 0x13 |
||
1317 | mov dx, 0x3f2 ; floppy motor off |
||
1318 | mov al, 0 |
||
1319 | out dx, al |
||
1320 | |||
1321 | if defined extended_primary_loader |
||
1322 | cmp [boot_dev], 1 |
||
1323 | jne no_sys_from_primary |
||
1324 | ; load kolibri.img using callback from primary loader |
||
1325 | and word [movedesc + 24 + 2], 0 |
||
1326 | mov byte [movedesc + 24 + 4], 10h |
||
1327 | ; read in blocks of 64K until file is fully loaded |
||
1328 | mov ax, 1 |
||
1329 | .repeat: |
||
1330 | mov di, image_file_struct |
||
1331 | call [bootcallback] |
||
1332 | push cs |
||
1333 | pop ds |
||
1334 | push cs |
||
1335 | pop es |
||
1336 | cmp bx, 1 |
||
1337 | ja sayerr_badsect |
||
1338 | push bx |
||
1339 | mov si, movedesc |
||
1340 | and word [si + 16 + 2], 0 |
||
1341 | mov byte [si + 16 + 4], 4 |
||
1342 | mov ah, 87h |
||
1343 | mov cx, 8000h |
||
1344 | int 15h |
||
1345 | pop bx |
||
1346 | test ah, ah |
||
1347 | jnz sayerr_memmove |
||
1348 | inc byte [si + 24 + 4] |
||
1349 | test bx, bx |
||
1350 | jz no_sys_from_primary |
||
1351 | mov ax, 2 |
||
1352 | jmp .repeat |
||
1353 | no_sys_from_primary: |
||
1354 | end if |
||
1355 | |||
1356 | ; SET GRAPHICS |
||
1357 | |||
1358 | xor ax, ax |
||
1359 | mov es, ax |
||
1360 | |||
2466 | Serge | 1361 | mov ax, [es:BOOT_VESA_MODE] ; vga & 320x200 |
2288 | clevermous | 1362 | mov bx, ax |
1363 | cmp ax, 0x13 |
||
1364 | je setgr |
||
1365 | cmp ax, 0x12 |
||
1366 | je setgr |
||
1367 | mov ax, 0x4f02 ; Vesa |
||
1368 | setgr: |
||
1369 | int 0x10 |
||
1370 | test ah, ah |
||
1371 | mov si, fatalsel |
||
1372 | jnz v_mode_error |
||
1373 | ; set mode 0x12 graphics registers: |
||
1374 | cmp bx, 0x12 |
||
1375 | jne gmok2 |
||
1376 | |||
1377 | mov al, 0x05 |
||
1378 | mov dx, 0x03ce |
||
1379 | push dx |
||
1380 | out dx, al ; select GDC mode register |
||
1381 | mov al, 0x02 |
||
1382 | inc dx |
||
1383 | out dx, al ; set write mode 2 |
||
1384 | |||
1385 | mov al, 0x02 |
||
1386 | mov dx, 0x03c4 |
||
1387 | out dx, al ; select VGA sequencer map mask register |
||
1388 | mov al, 0x0f |
||
1389 | inc dx |
||
1390 | out dx, al ; set mask for all planes 0-3 |
||
1391 | |||
1392 | mov al, 0x08 |
||
1393 | pop dx |
||
1394 | out dx, al ; select GDC bit mask register |
||
1395 | ; for writes to 0x03cf |
||
1396 | gmok2: |
||
1397 | push ds |
||
1398 | pop es |