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Rev | Author | Line No. | Line |
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431 | serge | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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2465 | Serge | 3 | ;; Copyright (C) KolibriOS team 2004-2011. All rights reserved. ;; |
431 | serge | 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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1 | ha | 13 | |
593 | mikedld | 14 | $Revision: 2465 $ |
1 | ha | 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 | |||
183 | diamond | 23 | |
29 | halyavin | 24 | putchar: |
25 | ; in: al=character |
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514 | diamond | 26 | mov ah, 0Eh |
27 | mov bh, 0 |
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28 | int 10h |
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29 | ret |
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1 | ha | 30 | |
29 | halyavin | 31 | print: |
32 | ; in: si->string |
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514 | diamond | 33 | mov al, 186 |
34 | call putchar |
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35 | mov al, ' ' |
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36 | call putchar |
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1 | ha | 37 | |
29 | halyavin | 38 | printplain: |
39 | ; in: si->string |
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514 | diamond | 40 | pusha |
41 | lodsb |
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29 | halyavin | 42 | @@: |
514 | diamond | 43 | call putchar |
44 | lodsb |
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2434 | Serge | 45 | test al, al |
514 | diamond | 46 | jnz @b |
47 | popa |
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48 | ret |
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1 | ha | 49 | |
29 | halyavin | 50 | getkey: |
51 | ; get number in range [bl,bh] (bl,bh in ['0'..'9']) |
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52 | ; in: bx=range |
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53 | ; out: ax=digit (1..9, 10 for 0) |
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514 | diamond | 54 | mov ah, 0 |
55 | int 16h |
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56 | cmp al, bl |
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57 | jb getkey |
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58 | cmp al, bh |
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59 | ja getkey |
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60 | push ax |
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61 | call putchar |
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62 | pop ax |
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63 | and ax, 0Fh |
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64 | jnz @f |
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65 | mov al, 10 |
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29 | halyavin | 66 | @@: |
514 | diamond | 67 | ret |
1 | ha | 68 | |
29 | halyavin | 69 | setcursor: |
70 | ; in: dl=column, dh=row |
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514 | diamond | 71 | mov ah, 2 |
72 | mov bh, 0 |
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73 | int 10h |
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74 | ret |
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29 | halyavin | 75 | |
76 | macro _setcursor row,column |
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77 | { |
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514 | diamond | 78 | mov dx, row*256 + column |
79 | call setcursor |
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29 | halyavin | 80 | } |
81 | |||
134 | diamond | 82 | boot_read_floppy: |
83 | push si |
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84 | xor si, si |
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85 | mov ah, 2 ; read |
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86 | @@: |
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87 | push ax |
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88 | int 0x13 |
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89 | pop ax |
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90 | jnc @f |
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91 | inc si |
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92 | cmp si, 10 |
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93 | jb @b |
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2010 | serge | 94 | sayerr_badsect: |
465 | serge | 95 | mov si, badsect |
134 | diamond | 96 | sayerr_plain: |
97 | call printplain |
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98 | jmp $ |
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99 | @@: |
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100 | pop si |
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101 | ret |
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102 | |||
795 | shurf | 103 | ; convert abs. sector number (AX) to BIOS T:H:S |
104 | ; sector number = (abs.sector%BPB_SecPerTrk)+1 |
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105 | ; pre.track number = (abs.sector/BPB_SecPerTrk) |
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106 | ; head number = pre.track number%BPB_NumHeads |
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107 | ; track number = pre.track number/BPB_NumHeads |
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108 | ; Return: cl - sector number |
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109 | ; ch - track number |
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110 | ; dl - drive number (0 = a:) |
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111 | ; dh - head number |
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112 | conv_abs_to_THS: |
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113 | push bx |
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2434 | Serge | 114 | mov bx, word [BPB_SecPerTrk] |
115 | xor dx, dx |
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795 | shurf | 116 | div bx |
117 | inc dx |
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118 | mov cl, dl ; cl = sector number |
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2434 | Serge | 119 | mov bx, word [BPB_NumHeads] |
120 | xor dx, dx |
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795 | shurf | 121 | div bx |
122 | ; !!!!!!! ax = track number, dx = head number |
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2434 | Serge | 123 | mov ch, al ; ch=track number |
124 | xchg dh, dl ; dh=head number |
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125 | mov dl, 0 ; dl=0 (drive 0 (a:)) |
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795 | shurf | 126 | pop bx |
127 | retn |
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128 | ; needed variables |
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816 | Lrz | 129 | BPB_SecPerTrk dw 0 ; sectors per track |
130 | BPB_NumHeads dw 0 ; number of heads |
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131 | BPB_FATSz16 dw 0 ; size of FAT |
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132 | BPB_RootEntCnt dw 0 ; count of root dir. entries |
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133 | BPB_BytsPerSec dw 0 ; bytes per sector |
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134 | BPB_RsvdSecCnt dw 0 ; number of reserved sectors |
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135 | BPB_TotSec16 dw 0 ; count of the sectors on the volume |
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136 | BPB_SecPerClus db 0 ; number of sectors per cluster |
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137 | BPB_NumFATs db 0 ; number of FAT tables |
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138 | abs_sector_adj dw 0 ; adjustment to make abs. sector number |
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139 | end_of_FAT dw 0 ; end of FAT table |
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140 | FirstDataSector dw 0 ; begin of data |
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795 | shurf | 141 | |
1 | ha | 142 | ;========================================================================= |
143 | ; |
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144 | ; 16 BIT CODE |
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145 | ; |
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146 | ;========================================================================= |
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147 | |||
2441 | Serge | 148 | include 'bootvesa.inc' ;Include source for boot vesa |
2010 | serge | 149 | if defined extended_primary_loader |
150 | include 'parsers.inc' |
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151 | end if |
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1 | ha | 152 | |
153 | start_of_code: |
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2010 | serge | 154 | |
155 | if defined extended_primary_loader |
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156 | ; save data from primary loader |
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157 | mov word [cs:bootcallback], si |
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158 | mov word [cs:bootcallback+2], ds |
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159 | push cs |
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160 | pop ds |
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161 | mov [bootdevice], ax |
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162 | mov [bootfs], bx |
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163 | |||
164 | ; set up stack |
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165 | mov ax, 3000h |
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166 | mov ss, ax |
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167 | mov sp, 0EC00h |
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168 | |||
169 | ; try to load configuration file |
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170 | mov ax, 1 |
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171 | mov di, config_file_struct |
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172 | call [bootcallback] |
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514 | diamond | 173 | cld |
2010 | serge | 174 | push cs |
175 | pop es |
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176 | ; bx=0 - ok, bx=1 - part of file loaded, assume this is ok |
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177 | cmp bx, 1 |
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178 | ja .config_bad |
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179 | ; configuration file was loaded, parse |
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180 | ; if length is too big, use first 0FFFFh bytes |
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181 | test dx, dx |
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182 | jz @f |
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183 | mov ax, 0FFFFh |
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184 | @@: |
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185 | ; ds:si will be pointer to current data, dx = limit |
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186 | xchg ax, dx |
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187 | push 4000h |
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188 | pop ds |
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189 | xor si, si |
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190 | .parse_loop: |
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191 | ; skip spaces |
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192 | cmp si, dx |
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193 | jae .parse_done |
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194 | lodsb |
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195 | cmp al, ' ' |
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196 | jbe .parse_loop |
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197 | dec si |
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198 | ; loop over all possible configuration values |
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199 | mov bx, config_file_variables |
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200 | .find_variant: |
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201 | ; get length |
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202 | mov cx, [es:bx] |
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203 | ; zero length = end of list |
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204 | jecxz .find_newline |
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205 | ; skip over length |
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206 | inc bx |
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207 | inc bx |
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208 | mov di, bx |
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209 | ; skip over string |
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210 | add bx, cx |
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211 | ; test whether we have at least cx symbols left |
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212 | mov ax, cx |
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213 | add ax, si |
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214 | jc .next_variant1 |
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215 | cmp ax, dx |
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216 | jae .next_variant1 |
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217 | ; save current position |
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218 | push si |
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219 | ; compare strings |
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220 | repz cmpsb |
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221 | jnz .next_variant2 |
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222 | ; strings are equal; look for "=" with possible spaces before and after |
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223 | @@: |
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224 | cmp si, dx |
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225 | jae .next_variant2 |
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226 | lodsb |
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227 | cmp al, ' ' |
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228 | jbe @b |
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229 | cmp al, '=' |
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230 | jnz .next_variant2 |
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231 | ; ok, we found the true variant |
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232 | ; ignore saved position on the stack |
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233 | pop ax |
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234 | ; call the parser |
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235 | call word [es:bx] |
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236 | ; line parsed, find next |
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237 | .find_newline: |
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238 | cmp si, dx |
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239 | jae .parse_done |
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240 | lodsb |
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241 | cmp al, 13 |
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242 | jz .parse_loop |
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243 | cmp al, 10 |
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244 | jz .parse_loop |
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245 | jmp .find_newline |
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246 | .next_variant2: |
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247 | ; continue to the next variant, restoring current position |
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248 | pop si |
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249 | .next_variant1: |
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250 | ; continue to the next variant |
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251 | ; skip over the parser |
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252 | inc bx |
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253 | inc bx |
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254 | jmp .find_variant |
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255 | .parse_done: |
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256 | .config_bad: |
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257 | |||
258 | ; set up segment registers |
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259 | push cs |
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260 | pop ds |
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261 | else |
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262 | cld |
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29 | halyavin | 263 | ; \begin{diamond}[02.12.2005] |
514 | diamond | 264 | ; if bootloader sets ax = 'KL', then ds:si points to loader block |
265 | cmp ax, 'KL' |
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266 | jnz @f |
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267 | mov word [cs:cfgmanager.loader_block], si |
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268 | mov word [cs:cfgmanager.loader_block+2], ds |
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29 | halyavin | 269 | @@: |
270 | ; \end{diamond}[02.12.2005] |
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1 | ha | 271 | |
514 | diamond | 272 | ; if bootloader sets cx = 'HA' and dx = 'RD', then bx contains identifier of source hard disk |
273 | ; (see comment to bx_from_load) |
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274 | cmp cx, 'HA' |
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275 | jnz no_hd_load |
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2434 | Serge | 276 | cmp dx, 'RD' |
514 | diamond | 277 | jnz no_hd_load |
278 | mov word [cs:bx_from_load], bx ; {SPraid}[13.03.2007] |
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488 | spraid | 279 | no_hd_load: |
280 | |||
29 | halyavin | 281 | ; set up stack |
514 | diamond | 282 | mov ax, 3000h |
283 | mov ss, ax |
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284 | mov sp, 0EC00h |
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29 | halyavin | 285 | ; set up segment registers |
514 | diamond | 286 | push cs |
287 | pop ds |
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288 | push cs |
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289 | pop es |
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2010 | serge | 290 | end if |
1 | ha | 291 | |
29 | halyavin | 292 | ; set videomode |
514 | diamond | 293 | mov ax, 3 |
294 | int 0x10 |
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1 | ha | 295 | |
134 | diamond | 296 | if lang eq ru |
1 | ha | 297 | ; Load & set russian VGA font (RU.INC) |
514 | diamond | 298 | mov bp, RU_FNT1 ; RU_FNT1 - First part |
299 | mov bx, 1000h ; 768 bytes |
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300 | mov cx, 30h ; 48 symbols |
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301 | mov dx, 80h ; 128 - position of first symbol |
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302 | mov ax, 1100h |
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303 | int 10h |
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1 | ha | 304 | |
514 | diamond | 305 | mov bp, RU_FNT2 ; RU_FNT2 -Second part |
306 | mov bx, 1000h ; 512 bytes |
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307 | mov cx, 20h ; 32 symbols |
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308 | mov dx, 0E0h ; 224 - position of first symbol |
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309 | mov ax, 1100h |
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310 | int 10h |
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1 | ha | 311 | ; End set VGA russian font |
274 | kaitz | 312 | else if lang eq et |
514 | diamond | 313 | mov bp, ET_FNT ; ET_FNT1 |
314 | mov bx, 1000h ; |
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315 | mov cx, 255 ; 256 symbols |
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316 | xor dx, dx ; 0 - position of first symbol |
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317 | mov ax, 1100h |
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318 | int 10h |
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134 | diamond | 319 | end if |
1 | ha | 320 | |
29 | halyavin | 321 | ; draw frames |
514 | diamond | 322 | push 0xb800 |
323 | pop es |
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324 | xor di, di |
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325 | mov ah, 1*16+15 |
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465 | serge | 326 | |
29 | halyavin | 327 | ; draw top |
514 | diamond | 328 | mov si, d80x25_top |
329 | mov cx, d80x25_top_num * 80 |
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29 | halyavin | 330 | @@: |
514 | diamond | 331 | lodsb |
332 | stosw |
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333 | loop @b |
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29 | halyavin | 334 | ; draw spaces |
514 | diamond | 335 | mov si, space_msg |
336 | mov dx, 25 - d80x25_top_num - d80x25_bottom_num |
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29 | halyavin | 337 | dfl1: |
514 | diamond | 338 | push si |
339 | mov cx, 80 |
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29 | halyavin | 340 | @@: |
514 | diamond | 341 | lodsb |
342 | stosw |
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343 | loop @b |
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344 | pop si |
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345 | dec dx |
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346 | jnz dfl1 |
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29 | halyavin | 347 | ; draw bottom |
514 | diamond | 348 | mov si, d80x25_bottom |
349 | mov cx, d80x25_bottom_num * 80 |
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29 | halyavin | 350 | @@: |
514 | diamond | 351 | lodsb |
352 | stosw |
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353 | loop @b |
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1 | ha | 354 | |
514 | diamond | 355 | mov byte [space_msg+80], 0 ; now space_msg is null terminated |
1 | ha | 356 | |
514 | diamond | 357 | _setcursor d80x25_top_num,0 |
1 | ha | 358 | |
359 | |||
360 | ; TEST FOR 386+ |
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361 | |||
514 | diamond | 362 | mov bx, 0x4000 |
1 | ha | 363 | pushf |
364 | pop ax |
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514 | diamond | 365 | mov dx, ax |
366 | xor ax, bx |
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1 | ha | 367 | push ax |
368 | popf |
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369 | pushf |
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370 | pop ax |
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514 | diamond | 371 | and ax, bx |
372 | and dx, bx |
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373 | cmp ax, dx |
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1 | ha | 374 | jnz cpugood |
514 | diamond | 375 | mov si, not386 |
40 | halyavin | 376 | sayerr: |
1 | ha | 377 | call print |
378 | jmp $ |
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379 | cpugood: |
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380 | |||
514 | diamond | 381 | push 0 |
465 | serge | 382 | popf |
383 | sti |
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384 | |||
29 | halyavin | 385 | ; set up esp |
514 | diamond | 386 | movzx esp, sp |
1 | ha | 387 | |
160 | diamond | 388 | push 0 |
389 | pop es |
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2441 | Serge | 390 | and word [es:BOOT_IDE_BASE_ADDR], 0 |
164 | serge | 391 | ; \begin{Mario79} |
392 | ; find HDD IDE DMA PCI device |
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160 | diamond | 393 | ; check for PCI BIOS |
394 | mov ax, 0xB101 |
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395 | int 0x1A |
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396 | jc .nopci |
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397 | cmp edx, 'PCI ' |
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398 | jnz .nopci |
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399 | ; find PCI class code |
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400 | ; class 1 = mass storage |
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401 | ; subclass 1 = IDE controller |
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402 | ; a) class 1, subclass 1, programming interface 0x80 |
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403 | mov ax, 0xB103 |
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404 | mov ecx, 1*10000h + 1*100h + 0x80 |
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514 | diamond | 405 | xor si, si ; device index = 0 |
160 | diamond | 406 | int 0x1A |
407 | jnc .found |
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187 | diamond | 408 | ; b) class 1, subclass 1, programming interface 0x8A |
160 | diamond | 409 | mov ax, 0xB103 |
187 | diamond | 410 | mov ecx, 1*10000h + 1*100h + 0x8A |
514 | diamond | 411 | xor si, si ; device index = 0 |
160 | diamond | 412 | int 0x1A |
413 | jnc .found |
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187 | diamond | 414 | ; c) class 1, subclass 1, programming interface 0x85 |
160 | diamond | 415 | mov ax, 0xB103 |
187 | diamond | 416 | mov ecx, 1*10000h + 1*100h + 0x85 |
514 | diamond | 417 | xor si, si |
160 | diamond | 418 | int 0x1A |
419 | jc .nopci |
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420 | .found: |
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421 | ; get memory base |
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422 | mov ax, 0xB10A |
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423 | mov di, 0x20 ; memory base is config register at 0x20 |
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424 | int 0x1A |
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425 | jc .nopci |
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426 | and cx, 0xFFF0 ; clear address decode type |
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2441 | Serge | 427 | mov [es:BOOT_IDE_BASE_ADDR], cx |
160 | diamond | 428 | .nopci: |
164 | serge | 429 | ; \end{Mario79} |
160 | diamond | 430 | |
514 | diamond | 431 | mov al, 0xf6 ; Ñáðîñ êëàâèàòóðû, ðàçðåøèòü ñêàíèðîâàíèå |
432 | out 0x60, al |
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433 | xor cx, cx |
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1 | ha | 434 | wait_loop: ; variant 2 |
435 | ; reading state of port of 8042 controller |
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514 | diamond | 436 | in al, 64h |
437 | and al, 00000010b ; ready flag |
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164 | serge | 438 | ; wait until 8042 controller is ready |
1 | ha | 439 | loopnz wait_loop |
440 | |||
713 | Lrz | 441 | ;;;/diamond today 5.02.2008 |
442 | ; set keyboard typematic rate & delay |
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443 | mov al, 0xf3 |
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444 | out 0x60, al |
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445 | xor cx, cx |
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446 | @@: |
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447 | in al, 64h |
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448 | test al, 2 |
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449 | loopnz @b |
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450 | mov al, 0 |
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451 | out 0x60, al |
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452 | xor cx, cx |
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453 | @@: |
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454 | in al, 64h |
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455 | test al, 2 |
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456 | loopnz @b |
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457 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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76 | mario79 | 458 | ; --------------- APM --------------------- |
2441 | Serge | 459 | and word [es:BOOT_APM_VERSION], 0 ; ver = 0.0 (APM not found) |
514 | diamond | 460 | mov ax, 0x5300 |
461 | xor bx, bx |
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462 | int 0x15 |
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2441 | Serge | 463 | jc apm_end ; APM not found |
514 | diamond | 464 | test cx, 2 |
2441 | Serge | 465 | jz apm_end ; APM 32-bit protected-mode interface not supported |
466 | mov [es:BOOT_APM_VERSION], ax ; Save APM Version |
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467 | mov [es:BOOT_APM_FLAGS], cx ; Save APM flags |
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164 | serge | 468 | |
514 | diamond | 469 | ; Write APM ver ---- |
470 | and ax, 0xf0f |
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471 | add ax, '00' |
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472 | mov si, msg_apm |
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473 | mov [si + 5], ah |
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474 | mov [si + 7], al |
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475 | _setcursor 0, 3 |
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476 | call printplain |
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477 | ; ------------------ |
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164 | serge | 478 | |
514 | diamond | 479 | mov ax, 0x5304 ; Disconnect interface |
480 | xor bx, bx |
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481 | int 0x15 |
||
482 | mov ax, 0x5303 ; Connect 32 bit mode interface |
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483 | xor bx, bx |
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484 | int 0x15 |
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465 | serge | 485 | |
2441 | Serge | 486 | mov [es:BOOT_APM_ENTRY], ebx |
487 | mov [es:BOOT_APM_CODE_32], ax |
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488 | mov [es:BOOT_APM_CODE_16], cx |
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489 | mov [es:BOOT_APM_DATA_16], dx |
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465 | serge | 490 | |
76 | mario79 | 491 | apm_end: |
437 | diamond | 492 | _setcursor d80x25_top_num, 0 |
76 | mario79 | 493 | |
2010 | serge | 494 | if ~ defined extended_primary_loader |
713 | Lrz | 495 | ;CHECK current of code |
496 | cmp [cfgmanager.loader_block], -1 |
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497 | jz noloaderblock |
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498 | les bx, [cfgmanager.loader_block] |
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499 | cmp byte [es:bx], 1 |
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500 | mov si, loader_block_error |
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501 | jnz sayerr |
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737 | diamond | 502 | push 0 |
503 | pop es |
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2010 | serge | 504 | end if |
713 | Lrz | 505 | |
506 | noloaderblock: |
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1 | ha | 507 | ; DISPLAY VESA INFORMATION |
713 | Lrz | 508 | call print_vesa_info |
509 | call calc_vmodes_table |
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510 | call check_first_parm ;check and enable cursor_pos |
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1 | ha | 511 | |
29 | halyavin | 512 | ; \begin{diamond}[30.11.2005] |
513 | cfgmanager: |
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514 | ; settings: |
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515 | ; a) preboot_graph = graphical mode |
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516 | ; preboot_gprobe = probe this mode? |
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713 | Lrz | 517 | ; b) preboot_dma = use DMA access? |
29 | halyavin | 518 | ; c) preboot_vrrm = use VRR? |
519 | ; d) preboot_device = from what boot? |
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713 | Lrz | 520 | |
29 | halyavin | 521 | ; determine default settings |
2010 | serge | 522 | if ~ defined extended_primary_loader |
514 | diamond | 523 | mov [.bSettingsChanged], 0 |
2010 | serge | 524 | end if |
713 | Lrz | 525 | |
526 | ;.preboot_gr_end: |
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726 | diamond | 527 | mov di, preboot_device |
528 | ; if image in memory is present and [preboot_device] is uninitialized, |
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529 | ; set it to use this preloaded image |
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530 | cmp byte [di], 0 |
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531 | jnz .preboot_device_inited |
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2010 | serge | 532 | if defined extended_primary_loader |
533 | inc byte [di] |
||
534 | cmp byte [bootdevice], 'f' ; floppy? |
||
535 | jz .preboot_device_inited |
||
536 | inc byte [di] |
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537 | else |
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726 | diamond | 538 | cmp [.loader_block], -1 |
539 | jz @f |
||
540 | les bx, [.loader_block] |
||
541 | test byte [es:bx+1], 1 |
||
542 | jz @f |
||
543 | mov byte [di], 3 |
||
544 | jmp .preboot_device_inited |
||
545 | @@: |
||
546 | ; otherwise, set [preboot_device] to 1 (default value - boot from floppy) |
||
547 | mov byte [di], 1 |
||
2010 | serge | 548 | end if |
726 | diamond | 549 | .preboot_device_inited: |
1018 | diamond | 550 | ; following 4 lines set variables to 1 if its current value is 0 |
726 | diamond | 551 | cmp byte [di+preboot_dma-preboot_device], 1 |
552 | adc byte [di+preboot_dma-preboot_device], 0 |
||
553 | cmp byte [di+preboot_biosdisk-preboot_device], 1 |
||
554 | adc byte [di+preboot_biosdisk-preboot_device], 0 |
||
2268 | Serge | 555 | ;; default value for VRR is OFF |
556 | ; cmp byte [di+preboot_vrrm-preboot_device], 0 |
||
557 | ; jnz @f |
||
558 | ; mov byte [di+preboot_vrrm-preboot_device], 2 |
||
559 | ;@@: |
||
29 | halyavin | 560 | ; notify user |
713 | Lrz | 561 | _setcursor 5,2 |
562 | |||
514 | diamond | 563 | mov si, linef |
713 | Lrz | 564 | call printplain |
514 | diamond | 565 | mov si, start_msg |
566 | call print |
||
567 | mov si, time_msg |
||
568 | call print |
||
29 | halyavin | 569 | ; get start time |
514 | diamond | 570 | call .gettime |
571 | mov [.starttime], eax |
||
572 | mov word [.timer], .newtimer |
||
573 | mov word [.timer+2], cs |
||
29 | halyavin | 574 | .printcfg: |
946 | lrz | 575 | |
514 | diamond | 576 | _setcursor 9,0 |
577 | mov si, current_cfg_msg |
||
578 | call print |
||
579 | mov si, curvideo_msg |
||
580 | call print |
||
713 | Lrz | 581 | |
582 | call draw_current_vmode |
||
583 | |||
709 | diamond | 584 | mov si, usebd_msg |
585 | cmp [preboot_biosdisk], 1 |
||
586 | call .say_on_off |
||
2268 | Serge | 587 | ; mov si, vrrm_msg |
588 | ; cmp [preboot_vrrm], 1 |
||
589 | ; call .say_on_off |
||
514 | diamond | 590 | mov si, preboot_device_msg |
591 | call print |
||
592 | mov al, [preboot_device] |
||
2010 | serge | 593 | if defined extended_primary_loader |
594 | and eax, 3 |
||
595 | else |
||
545 | spraid | 596 | and eax, 7 |
2010 | serge | 597 | end if |
514 | diamond | 598 | mov si, [preboot_device_msgs+eax*2] |
599 | call printplain |
||
726 | diamond | 600 | .show_remarks: |
601 | ; show remarks in gray color |
||
602 | mov di, ((21-num_remarks)*80 + 2)*2 |
||
603 | push 0xB800 |
||
604 | pop es |
||
605 | mov cx, num_remarks |
||
606 | mov si, remarks |
||
607 | .write_remarks: |
||
608 | lodsw |
||
609 | push si |
||
610 | xchg ax, si |
||
611 | mov ah, 1*16+7 ; background: blue (1), foreground: gray (7) |
||
612 | push di |
||
613 | .write_remark: |
||
614 | lodsb |
||
615 | test al, al |
||
616 | jz @f |
||
617 | stosw |
||
618 | jmp .write_remark |
||
619 | @@: |
||
620 | pop di |
||
621 | pop si |
||
622 | add di, 80*2 |
||
623 | loop .write_remarks |
||
29 | halyavin | 624 | .wait: |
514 | diamond | 625 | _setcursor 25,0 ; out of screen |
34 | halyavin | 626 | ; set timer interrupt handler |
514 | diamond | 627 | cli |
628 | push 0 |
||
629 | pop es |
||
713 | Lrz | 630 | push dword [es:8*4] |
631 | pop dword [.oldtimer] |
||
632 | push dword [.timer] |
||
2441 | Serge | 633 | pop dword [es:8*4] |
713 | Lrz | 634 | ; mov eax, [es:8*4] |
635 | ; mov [.oldtimer], eax |
||
636 | ; mov eax, [.timer] |
||
637 | ; mov [es:8*4], eax |
||
514 | diamond | 638 | sti |
29 | halyavin | 639 | ; wait for keypressed |
2434 | Serge | 640 | xor ax, ax |
514 | diamond | 641 | int 16h |
642 | push ax |
||
29 | halyavin | 643 | ; restore timer interrupt |
713 | Lrz | 644 | ; push 0 |
645 | ; pop es |
||
514 | diamond | 646 | mov eax, [.oldtimer] |
647 | mov [es:8*4], eax |
||
648 | mov [.timer], eax |
||
946 | lrz | 649 | |
514 | diamond | 650 | _setcursor 7,0 |
651 | mov si, space_msg |
||
652 | call printplain |
||
726 | diamond | 653 | ; clear remarks and restore normal attributes |
654 | push es |
||
655 | mov di, ((21-num_remarks)*80 + 2)*2 |
||
656 | push 0xB800 |
||
657 | pop es |
||
658 | mov cx, num_remarks |
||
659 | mov ax, ' ' + (1*16 + 15)*100h |
||
660 | @@: |
||
661 | push cx |
||
662 | mov cx, 76 |
||
663 | rep stosw |
||
664 | pop cx |
||
665 | add di, 4*2 |
||
666 | loop @b |
||
667 | pop es |
||
514 | diamond | 668 | pop ax |
29 | halyavin | 669 | ; switch on key |
514 | diamond | 670 | cmp al, 13 |
671 | jz .continue |
||
672 | or al, 20h |
||
673 | cmp al, 'a' |
||
674 | jz .change_a |
||
675 | cmp al, 'b' |
||
676 | jz .change_b |
||
2268 | Serge | 677 | ; cmp al, 'c' |
678 | ; jz .change_c |
||
679 | cmp al, 'c' ; 'd' |
||
726 | diamond | 680 | jnz .show_remarks |
514 | diamond | 681 | _setcursor 15,0 |
682 | mov si, bdev |
||
683 | call print |
||
2010 | serge | 684 | if defined extended_primary_loader |
685 | mov bx, '12' |
||
686 | else |
||
545 | spraid | 687 | mov bx, '14' |
2010 | serge | 688 | end if |
514 | diamond | 689 | call getkey |
690 | mov [preboot_device], al |
||
691 | _setcursor 13,0 |
||
29 | halyavin | 692 | .d: |
2010 | serge | 693 | if ~ defined extended_primary_loader |
514 | diamond | 694 | mov [.bSettingsChanged], 1 |
2010 | serge | 695 | end if |
713 | Lrz | 696 | call clear_vmodes_table ;clear vmodes_table |
514 | diamond | 697 | jmp .printcfg |
29 | halyavin | 698 | .change_a: |
713 | Lrz | 699 | .loops: |
700 | call draw_vmodes_table |
||
816 | Lrz | 701 | _setcursor 25,0 ; out of screen |
2434 | Serge | 702 | xor ax, ax |
713 | Lrz | 703 | int 0x16 |
704 | ; call clear_table_cursor ;clear current position of cursor |
||
705 | |||
2434 | Serge | 706 | mov si, word [cursor_pos] |
713 | Lrz | 707 | |
2434 | Serge | 708 | cmp ah, 0x48;x,0x48E0 ; up |
713 | Lrz | 709 | jne .down |
2434 | Serge | 710 | cmp si, modes_table |
713 | Lrz | 711 | jbe .loops |
2434 | Serge | 712 | sub word [cursor_pos], size_of_step |
713 | Lrz | 713 | jmp .loops |
714 | |||
2434 | Serge | 715 | .down: |
716 | cmp ah, 0x50;x,0x50E0 ; down |
||
730 | diamond | 717 | jne .pgup |
2434 | Serge | 718 | cmp word[es:si+10], -1 |
2441 | Serge | 719 | je .loops |
2434 | Serge | 720 | add word [cursor_pos], size_of_step |
713 | Lrz | 721 | jmp .loops |
722 | |||
2434 | Serge | 723 | .pgup: |
724 | cmp ah, 0x49 ; page up |
||
730 | diamond | 725 | jne .pgdn |
731 | diamond | 726 | sub si, size_of_step*long_v_table |
730 | diamond | 727 | cmp si, modes_table |
728 | jae @f |
||
729 | mov si, modes_table |
||
730 | @@: |
||
731 | mov word [cursor_pos], si |
||
732 | mov si, word [home_cursor] |
||
731 | diamond | 733 | sub si, size_of_step*long_v_table |
730 | diamond | 734 | cmp si, modes_table |
735 | jae @f |
||
736 | mov si, modes_table |
||
737 | @@: |
||
738 | mov word [home_cursor], si |
||
739 | jmp .loops |
||
740 | |||
2434 | Serge | 741 | .pgdn: |
742 | cmp ah, 0x51 ; page down |
||
730 | diamond | 743 | jne .enter |
744 | mov ax, [end_cursor] |
||
731 | diamond | 745 | add si, size_of_step*long_v_table |
730 | diamond | 746 | cmp si, ax |
747 | jb @f |
||
748 | mov si, ax |
||
749 | sub si, size_of_step |
||
750 | @@: |
||
751 | mov word [cursor_pos], si |
||
752 | mov si, word [home_cursor] |
||
731 | diamond | 753 | sub ax, size_of_step*long_v_table |
754 | add si, size_of_step*long_v_table |
||
730 | diamond | 755 | cmp si, ax |
756 | jb @f |
||
757 | mov si, ax |
||
758 | @@: |
||
759 | mov word [home_cursor], si |
||
760 | jmp .loops |
||
761 | |||
2434 | Serge | 762 | .enter: |
763 | cmp al, 0x0D;x,0x1C0D ; enter |
||
713 | Lrz | 764 | jne .loops |
765 | push word [cursor_pos] |
||
746 | Lrz | 766 | pop bp |
767 | push word [es:bp] |
||
768 | pop word [x_save] |
||
769 | push word [es:bp+2] |
||
770 | pop word [y_save] |
||
816 | Lrz | 771 | push word [es:bp+6] |
749 | Lrz | 772 | pop word [number_vm] |
2434 | Serge | 773 | mov word [preboot_graph], bp ;save choose |
2441 | Serge | 774 | |
514 | diamond | 775 | jmp .d |
713 | Lrz | 776 | |
29 | halyavin | 777 | .change_b: |
514 | diamond | 778 | _setcursor 15,0 |
709 | diamond | 779 | ; mov si, ask_dma |
780 | ; call print |
||
781 | ; mov bx, '13' |
||
782 | ; call getkey |
||
783 | ; mov [preboot_dma], al |
||
784 | mov si, ask_bd |
||
514 | diamond | 785 | call print |
709 | diamond | 786 | mov bx, '12' |
514 | diamond | 787 | call getkey |
709 | diamond | 788 | mov [preboot_biosdisk], al |
514 | diamond | 789 | _setcursor 11,0 |
790 | jmp .d |
||
2268 | Serge | 791 | ;.change_c: |
792 | ; _setcursor 15,0 |
||
793 | ; mov si, vrrmprint |
||
794 | ; call print |
||
795 | ; mov bx, '12' |
||
796 | ; call getkey |
||
797 | ; mov [preboot_vrrm], al |
||
798 | ; _setcursor 12,0 |
||
799 | ; jmp .d |
||
713 | Lrz | 800 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
40 | halyavin | 801 | .say_on_off: |
514 | diamond | 802 | pushf |
803 | call print |
||
804 | mov si, on_msg |
||
805 | popf |
||
806 | jz @f |
||
807 | mov si, off_msg |
||
2434 | Serge | 808 | @@: |
809 | jmp printplain |
||
40 | halyavin | 810 | ; novesa and vervesa strings are not used at the moment of executing this code |
811 | virtual at novesa |
||
29 | halyavin | 812 | .oldtimer dd ? |
813 | .starttime dd ? |
||
2010 | serge | 814 | if ~ defined extended_primary_loader |
29 | halyavin | 815 | .bSettingsChanged db ? |
2010 | serge | 816 | end if |
34 | halyavin | 817 | .timer dd ? |
40 | halyavin | 818 | end virtual |
2010 | serge | 819 | if ~ defined extended_primary_loader |
143 | diamond | 820 | .loader_block dd -1 |
2010 | serge | 821 | end if |
29 | halyavin | 822 | .gettime: |
514 | diamond | 823 | mov ah, 0 |
824 | int 1Ah |
||
825 | xchg ax, cx |
||
826 | shl eax, 10h |
||
827 | xchg ax, dx |
||
828 | ret |
||
29 | halyavin | 829 | .newtimer: |
514 | diamond | 830 | push ds |
831 | push cs |
||
832 | pop ds |
||
833 | pushf |
||
834 | call [.oldtimer] |
||
835 | pushad |
||
836 | call .gettime |
||
837 | sub eax, [.starttime] |
||
2010 | serge | 838 | if defined extended_primary_loader |
839 | sub ax, [preboot_timeout] |
||
840 | else |
||
514 | diamond | 841 | sub ax, 18*5 |
2010 | serge | 842 | end if |
514 | diamond | 843 | jae .timergo |
844 | neg ax |
||
845 | add ax, 18-1 |
||
846 | mov bx, 18 |
||
847 | xor dx, dx |
||
848 | div bx |
||
29 | halyavin | 849 | if lang eq ru |
850 | ; ¯®¤®¦¤¨â¥ 5 ᥪã¤, 4/3/2 ᥪã¤ë, 1 ᥪã¤ã |
||
514 | diamond | 851 | cmp al, 5 |
852 | mov cl, ' ' |
||
853 | jae @f |
||
854 | cmp al, 1 |
||
855 | mov cl, 'ã' |
||
856 | jz @f |
||
857 | mov cl, 'ë' |
||
2434 | Serge | 858 | @@: |
859 | mov [time_str+9], cl |
||
274 | kaitz | 860 | else if lang eq et |
514 | diamond | 861 | cmp al, 1 |
862 | ja @f |
||
863 | mov [time_str+9], ' ' |
||
2434 | Serge | 864 | mov [time_str+10], ' ' |
381 | serge | 865 | @@: |
29 | halyavin | 866 | else |
867 | ; wait 5/4/3/2 seconds, 1 second |
||
514 | diamond | 868 | cmp al, 1 |
869 | mov cl, 's' |
||
870 | ja @f |
||
871 | mov cl, ' ' |
||
2434 | Serge | 872 | @@: |
873 | mov [time_str+9], cl |
||
29 | halyavin | 874 | end if |
514 | diamond | 875 | add al, '0' |
876 | mov [time_str+1], al |
||
877 | mov si, time_msg |
||
878 | _setcursor 7,0 |
||
879 | call print |
||
880 | _setcursor 25,0 |
||
881 | popad |
||
882 | pop ds |
||
883 | iret |
||
29 | halyavin | 884 | .timergo: |
514 | diamond | 885 | push 0 |
886 | pop es |
||
887 | mov eax, [.oldtimer] |
||
888 | mov [es:8*4], eax |
||
889 | mov sp, 0EC00h |
||
29 | halyavin | 890 | .continue: |
514 | diamond | 891 | sti |
892 | _setcursor 6,0 |
||
893 | mov si, space_msg |
||
894 | call printplain |
||
895 | call printplain |
||
896 | _setcursor 6,0 |
||
897 | mov si, loading_msg |
||
898 | call print |
||
899 | _setcursor 15,0 |
||
2010 | serge | 900 | if ~ defined extended_primary_loader |
514 | diamond | 901 | cmp [.bSettingsChanged], 0 |
902 | jz .load |
||
903 | cmp [.loader_block], -1 |
||
904 | jz .load |
||
905 | les bx, [.loader_block] |
||
906 | mov eax, [es:bx+3] |
||
907 | push ds |
||
908 | pop es |
||
909 | test eax, eax |
||
910 | jz .load |
||
911 | push eax |
||
912 | mov si, save_quest |
||
913 | call print |
||
29 | halyavin | 914 | .waityn: |
514 | diamond | 915 | mov ah, 0 |
916 | int 16h |
||
917 | or al, 20h |
||
918 | cmp al, 'n' |
||
919 | jz .loadc |
||
920 | cmp al, 'y' |
||
921 | jnz .waityn |
||
922 | call putchar |
||
923 | mov byte [space_msg+80], 186 |
||
946 | lrz | 924 | |
514 | diamond | 925 | pop eax |
926 | push cs |
||
927 | push .cont |
||
928 | push eax |
||
946 | lrz | 929 | retf ;call back |
29 | halyavin | 930 | .loadc: |
514 | diamond | 931 | pop eax |
29 | halyavin | 932 | .cont: |
514 | diamond | 933 | push cs |
934 | pop ds |
||
935 | mov si, space_msg |
||
936 | mov byte [si+80], 0 |
||
937 | _setcursor 15,0 |
||
938 | call printplain |
||
939 | _setcursor 15,0 |
||
29 | halyavin | 940 | .load: |
2010 | serge | 941 | end if |
29 | halyavin | 942 | ; \end{diamond}[02.12.2005] |
1 | ha | 943 | |
944 | ; ASK GRAPHICS MODE |
||
945 | |||
713 | Lrz | 946 | call set_vmode |
1 | ha | 947 | |
948 | ; GRAPHICS ACCELERATION |
||
346 | diamond | 949 | ; force yes |
2441 | Serge | 950 | mov [es:BOOT_MTRR], byte 1 |
1 | ha | 951 | |
514 | diamond | 952 | ; DMA ACCESS TO HD |
1 | ha | 953 | |
514 | diamond | 954 | mov al, [preboot_dma] |
2441 | Serge | 955 | mov [es:BOOT_DMA], al |
346 | diamond | 956 | |
2268 | Serge | 957 | ;; VRR_M USE |
958 | ; |
||
959 | ; mov al,[preboot_vrrm] |
||
960 | ; mov [es:0x9030], al |
||
1 | ha | 961 | |
962 | ; BOOT DEVICE |
||
963 | |||
514 | diamond | 964 | mov al, [preboot_device] |
40 | halyavin | 965 | dec al |
514 | diamond | 966 | mov [boot_dev], al |
1 | ha | 967 | |
1103 | diamond | 968 | ; GET MEMORY MAP |
2010 | serge | 969 | include '../detect/biosmem.inc' |
1103 | diamond | 970 | |
1 | ha | 971 | ; READ DISKETTE TO MEMORY |
972 | |||
2434 | Serge | 973 | cmp [boot_dev], 0 |
1 | ha | 974 | jne no_sys_on_floppy |
2434 | Serge | 975 | mov si, diskload |
1 | ha | 976 | call print |
514 | diamond | 977 | xor ax, ax ; reset drive |
978 | xor dx, dx |
||
1 | ha | 979 | int 0x13 |
709 | diamond | 980 | ; do we boot from CD-ROM? |
981 | mov ah, 41h |
||
982 | mov bx, 55AAh |
||
983 | xor dx, dx |
||
984 | int 0x13 |
||
985 | jc .nocd |
||
986 | cmp bx, 0AA55h |
||
987 | jnz .nocd |
||
988 | mov ah, 48h |
||
989 | push ds |
||
990 | push es |
||
991 | pop ds |
||
992 | mov si, 0xa000 |
||
993 | mov word [si], 30 |
||
994 | int 0x13 |
||
995 | pop ds |
||
996 | jc .nocd |
||
997 | push ds |
||
998 | lds si, [es:si+26] |
||
999 | test byte [ds:si+10], 40h |
||
1000 | pop ds |
||
1001 | jz .nocd |
||
1002 | ; yes - read all floppy by 18 sectors |
||
795 | shurf | 1003 | |
1004 | ; TODO: !!!! read only first sector and set variables !!!!! |
||
1005 | ; ... |
||
1006 | ; TODO: !!! then read flippy image track by track |
||
2441 | Serge | 1007 | |
816 | Lrz | 1008 | mov cx, 0x0001 ; startcyl,startsector |
709 | diamond | 1009 | .a1: |
1010 | push cx dx |
||
1011 | mov al, 18 |
||
1012 | mov bx, 0xa000 |
||
1013 | call boot_read_floppy |
||
1014 | mov si, movedesc |
||
1015 | push es |
||
1016 | push ds |
||
1017 | pop es |
||
1018 | mov cx, 256*18 |
||
1019 | mov ah, 0x87 |
||
1020 | int 0x15 |
||
1021 | pop es |
||
1022 | pop dx cx |
||
1023 | test ah, ah |
||
1024 | jnz sayerr_floppy |
||
1025 | add dword [si+8*3+2], 512*18 |
||
1026 | inc dh |
||
1027 | cmp dh, 2 |
||
1028 | jnz .a1 |
||
1029 | mov dh, 0 |
||
1030 | inc ch |
||
1031 | cmp ch, 80 |
||
1032 | jae ok_sys_on_floppy |
||
1033 | pusha |
||
1034 | mov al, ch |
||
1035 | shr ch, 2 |
||
1036 | add al, ch |
||
1037 | aam |
||
1038 | xchg al, ah |
||
1039 | add ax, '00' |
||
1040 | mov si, pros |
||
1041 | mov [si], ax |
||
1042 | call printplain |
||
1043 | popa |
||
1044 | jmp .a1 |
||
1045 | .nocd: |
||
1046 | ; no - read only used sectors from floppy |
||
134 | diamond | 1047 | ; now load floppy image to memory |
1048 | ; at first load boot sector and first FAT table |
||
795 | shurf | 1049 | |
1050 | ; read only first sector and fill variables |
||
816 | Lrz | 1051 | mov cx, 0x0001 ; first logical sector |
1052 | xor dx, dx ; head = 0, drive = 0 (a:) |
||
1053 | mov al, 1 ; read one sector |
||
1054 | mov bx, 0xB000 ; es:bx -> data area |
||
1055 | call boot_read_floppy |
||
795 | shurf | 1056 | ; fill the necessary parameters to work with a floppy |
816 | Lrz | 1057 | mov ax, word [es:bx+24] |
1058 | mov word [BPB_SecPerTrk], ax |
||
1059 | mov ax, word [es:bx+26] |
||
1060 | mov word [BPB_NumHeads], ax |
||
1061 | mov ax, word [es:bx+17] |
||
1062 | mov word [BPB_RootEntCnt], ax |
||
1063 | mov ax, word [es:bx+14] |
||
1064 | mov word [BPB_RsvdSecCnt], ax |
||
1065 | mov ax, word [es:bx+19] |
||
1066 | mov word [BPB_TotSec16], ax |
||
1067 | mov al, byte [es:bx+13] |
||
1068 | mov byte [BPB_SecPerClus], al |
||
1069 | mov al, byte [es:bx+16] |
||
1070 | mov byte [BPB_NumFATs], al |
||
925 | Lrz | 1071 | ; |
1072 | mov ax, word [es:bx+22] |
||
1073 | mov word [BPB_FATSz16], ax |
||
1074 | mov cx, word [es:bx+11] |
||
1075 | mov word [BPB_BytsPerSec], cx |
||
1076 | |||
795 | shurf | 1077 | ; count of clusters in FAT12 ((size_of_FAT*2)/3) |
925 | Lrz | 1078 | ; mov ax, word [BPB_FATSz16] |
1079 | ; mov cx, word [BPB_BytsPerSec] |
||
1080 | ;end |
||
816 | Lrz | 1081 | xor dx, dx |
1082 | mul cx |
||
1083 | shl ax, 1 |
||
1084 | mov cx, 3 |
||
1085 | div cx ; now ax - number of clusters in FAT12 |
||
1086 | mov word [end_of_FAT], ax |
||
795 | shurf | 1087 | |
1088 | ; load first FAT table |
||
816 | Lrz | 1089 | mov cx, 0x0002 ; startcyl,startsector ; TODO!!!!! |
134 | diamond | 1090 | xor dx, dx ; starthead,drive |
795 | shurf | 1091 | mov al, byte [BPB_FATSz16] ; no of sectors to read |
1092 | add bx, word [BPB_BytsPerSec] ; es:bx -> data area |
||
134 | diamond | 1093 | call boot_read_floppy |
816 | Lrz | 1094 | mov bx, 0xB000 |
795 | shurf | 1095 | |
134 | diamond | 1096 | ; and copy them to extended memory |
465 | serge | 1097 | mov si, movedesc |
816 | Lrz | 1098 | mov [si+8*2+3], bh ; from |
2441 | Serge | 1099 | |
816 | Lrz | 1100 | mov ax, word [BPB_BytsPerSec] |
1101 | shr ax, 1 ; words per sector |
||
1102 | mov cx, word [BPB_RsvdSecCnt] |
||
1103 | add cx, word [BPB_FATSz16] |
||
1104 | mul cx |
||
1105 | push ax ; save to stack count of words in boot+FAT |
||
1106 | xchg ax, cx |
||
2441 | Serge | 1107 | |
134 | diamond | 1108 | push es |
1109 | push ds |
||
1110 | pop es |
||
1111 | mov ah, 0x87 |
||
1112 | int 0x15 |
||
816 | Lrz | 1113 | pop es |
76 | mario79 | 1114 | test ah, ah |
134 | diamond | 1115 | jz @f |
1116 | sayerr_floppy: |
||
1117 | mov dx, 0x3f2 |
||
1118 | mov al, 0 |
||
1119 | out dx, al |
||
2010 | serge | 1120 | sayerr_memmove: |
465 | serge | 1121 | mov si, memmovefailed |
134 | diamond | 1122 | jmp sayerr_plain |
1123 | @@: |
||
816 | Lrz | 1124 | pop ax ; restore from stack count of words in boot+FAT |
1125 | shl ax, 1 ; make bytes count from count of words |
||
1126 | and eax, 0ffffh |
||
795 | shurf | 1127 | add dword [si+8*3+2], eax |
1128 | |||
1129 | ; copy first FAT to second copy |
||
1130 | ; TODO: BPB_NumFATs !!!!! |
||
816 | Lrz | 1131 | add bx, word [BPB_BytsPerSec] ; !!! TODO: may be need multiply by BPB_RsvdSecCnt !!! |
1132 | mov byte [si+8*2+3], bh ; bx - begin of FAT |
||
2441 | Serge | 1133 | |
816 | Lrz | 1134 | mov ax, word [BPB_BytsPerSec] |
1135 | shr ax, 1 ; words per sector |
||
1136 | mov cx, word [BPB_FATSz16] |
||
1137 | mul cx |
||
1138 | mov cx, ax ; cx - count of words in FAT |
||
795 | shurf | 1139 | |
1140 | push es |
||
1141 | push ds |
||
1142 | pop es |
||
134 | diamond | 1143 | mov ah, 0x87 |
1144 | int 0x15 |
||
1145 | pop es |
||
1146 | test ah, ah |
||
1147 | jnz sayerr_floppy |
||
2441 | Serge | 1148 | |
816 | Lrz | 1149 | mov ax, cx |
1150 | shl ax, 1 |
||
1151 | and eax, 0ffffh ; ax - count of bytes in FAT |
||
795 | shurf | 1152 | add dword [si+8*3+2], eax |
2441 | Serge | 1153 | |
795 | shurf | 1154 | ; reading RootDir |
1155 | ; TODO: BPB_NumFATs |
||
816 | Lrz | 1156 | add bx, ax |
1157 | add bx, 100h |
||
1158 | and bx, 0ff00h ; bx - place in buffer to write RootDir |
||
1159 | push bx |
||
795 | shurf | 1160 | |
816 | Lrz | 1161 | mov bx, word [BPB_BytsPerSec] |
1162 | shr bx, 5 ; divide bx by 32 |
||
1163 | mov ax, word [BPB_RootEntCnt] |
||
1164 | xor dx, dx |
||
1165 | div bx |
||
1166 | push ax ; ax - count of RootDir sectors |
||
795 | shurf | 1167 | |
816 | Lrz | 1168 | mov ax, word [BPB_FATSz16] |
1169 | xor cx, cx |
||
1170 | mov cl, byte [BPB_NumFATs] |
||
1171 | mul cx |
||
1172 | add ax, word [BPB_RsvdSecCnt] ; ax - first sector of RootDir |
||
795 | shurf | 1173 | |
816 | Lrz | 1174 | mov word [FirstDataSector], ax |
1175 | pop bx |
||
1176 | push bx |
||
1177 | add word [FirstDataSector], bx ; Begin of data region of floppy |
||
2441 | Serge | 1178 | |
795 | shurf | 1179 | ; read RootDir |
816 | Lrz | 1180 | call conv_abs_to_THS |
1181 | pop ax |
||
1182 | pop bx ; place in buffer to write |
||
1183 | push ax |
||
1184 | call boot_read_floppy ; read RootDir into buffer |
||
795 | shurf | 1185 | ; copy RootDir |
816 | Lrz | 1186 | mov byte [si+8*2+3], bh ; from buffer |
1187 | pop ax ; ax = count of RootDir sectors |
||
1188 | mov cx, word [BPB_BytsPerSec] |
||
1189 | mul cx |
||
1190 | shr ax, 1 |
||
1191 | mov cx, ax ; count of words to copy |
||
1192 | push es |
||
1193 | push ds |
||
1194 | pop es |
||
795 | shurf | 1195 | mov ah, 0x87 |
1196 | int 0x15 |
||
816 | Lrz | 1197 | pop es |
795 | shurf | 1198 | |
816 | Lrz | 1199 | mov ax, cx |
1200 | shl ax, 1 |
||
1201 | and eax, 0ffffh ; ax - count of bytes in RootDir |
||
1202 | add dword [si+8*3+2], eax ; add count of bytes copied |
||
795 | shurf | 1203 | |
1204 | ; Reading data clusters from floppy |
||
816 | Lrz | 1205 | mov byte [si+8*2+3], bh |
1206 | push bx |
||
795 | shurf | 1207 | |
816 | Lrz | 1208 | mov di, 2 ; First data cluster |
134 | diamond | 1209 | .read_loop: |
816 | Lrz | 1210 | mov bx, di |
1211 | shr bx, 1 ; bx+di = di*1.5 |
||
1212 | jnc .even |
||
1213 | test word [es:bx+di+0xB200], 0xFFF0 ; TODO: may not be 0xB200 !!! |
||
1214 | jmp @f |
||
134 | diamond | 1215 | .even: |
816 | Lrz | 1216 | test word [es:bx+di+0xB200], 0xFFF ; TODO: may not be 0xB200 !!! |
795 | shurf | 1217 | |
134 | diamond | 1218 | @@: |
816 | Lrz | 1219 | jz .skip |
795 | shurf | 1220 | ; read cluster di |
1221 | ;.read: |
||
816 | Lrz | 1222 | ;conv cluster di to abs. sector ax |
1223 | ; ax = (N-2) * BPB_SecPerClus + FirstDataSector |
||
1224 | mov ax, di |
||
1225 | sub ax, 2 |
||
1226 | xor bx, bx |
||
1227 | mov bl, byte [BPB_SecPerClus] |
||
1228 | mul bx |
||
1229 | add ax, word [FirstDataSector] |
||
1230 | call conv_abs_to_THS |
||
1231 | pop bx |
||
1232 | push bx |
||
1233 | mov al, byte [BPB_SecPerClus] ; number of sectors in cluster |
||
1234 | call boot_read_floppy |
||
76 | mario79 | 1235 | push es |
1236 | push ds |
||
1 | ha | 1237 | pop es |
134 | diamond | 1238 | pusha |
795 | shurf | 1239 | ; |
816 | Lrz | 1240 | mov ax, word [BPB_BytsPerSec] |
1241 | xor cx, cx |
||
1242 | mov cl, byte [BPB_SecPerClus] |
||
1243 | mul cx |
||
1244 | shr ax, 1 ; ax = (BPB_BytsPerSec * BPB_SecPerClus)/2 |
||
1245 | mov cx, ax ; number of words to copy (count words in cluster) |
||
795 | shurf | 1246 | ; |
816 | Lrz | 1247 | mov ah, 0x87 |
1248 | int 0x15 ; copy data |
||
134 | diamond | 1249 | test ah, ah |
1 | ha | 1250 | popa |
134 | diamond | 1251 | pop es |
1252 | jnz sayerr_floppy |
||
795 | shurf | 1253 | ; skip cluster di |
134 | diamond | 1254 | .skip: |
816 | Lrz | 1255 | mov ax, word [BPB_BytsPerSec] |
1256 | xor cx, cx |
||
1257 | mov cl, byte [BPB_SecPerClus] |
||
1258 | mul cx |
||
1259 | and eax, 0ffffh ; ax - count of bytes in cluster |
||
1260 | add dword [si+8*3+2], eax |
||
795 | shurf | 1261 | |
816 | Lrz | 1262 | mov ax, word [end_of_FAT] ; max cluster number |
134 | diamond | 1263 | pusha |
1264 | ; draw percentage |
||
795 | shurf | 1265 | ; total clusters: ax |
1266 | ; read clusters: di |
||
816 | Lrz | 1267 | xchg ax, di |
134 | diamond | 1268 | mov cx, 100 |
1269 | mul cx |
||
816 | Lrz | 1270 | div di |
134 | diamond | 1271 | aam |
1272 | xchg al, ah |
||
1273 | add ax, '00' |
||
465 | serge | 1274 | mov si, pros |
134 | diamond | 1275 | cmp [si], ax |
1276 | jz @f |
||
1277 | mov [si], ax |
||
1 | ha | 1278 | call printplain |
134 | diamond | 1279 | @@: |
1 | ha | 1280 | popa |
134 | diamond | 1281 | inc di |
816 | Lrz | 1282 | cmp di, word [end_of_FAT] ; max number of cluster |
134 | diamond | 1283 | jnz .read_loop |
816 | Lrz | 1284 | pop bx ; clear stack |
134 | diamond | 1285 | |
709 | diamond | 1286 | ok_sys_on_floppy: |
514 | diamond | 1287 | mov si, backspace2 |
1 | ha | 1288 | call printplain |
514 | diamond | 1289 | mov si, okt |
1 | ha | 1290 | call printplain |
514 | diamond | 1291 | no_sys_on_floppy: |
1292 | xor ax, ax ; reset drive |
||
1293 | xor dx, dx |
||
1 | ha | 1294 | int 0x13 |
514 | diamond | 1295 | mov dx, 0x3f2 ; floppy motor off |
1296 | mov al, 0 |
||
1297 | out dx, al |
||
1 | ha | 1298 | |
2010 | serge | 1299 | if defined extended_primary_loader |
1300 | cmp [boot_dev], 1 |
||
1301 | jne no_sys_from_primary |
||
1302 | ; load kolibri.img using callback from primary loader |
||
1303 | and word [movedesc + 24 + 2], 0 |
||
1304 | mov byte [movedesc + 24 + 4], 10h |
||
1305 | ; read in blocks of 64K until file is fully loaded |
||
1306 | mov ax, 1 |
||
1307 | .repeat: |
||
1308 | mov di, image_file_struct |
||
1309 | call [bootcallback] |
||
1310 | push cs |
||
1311 | pop ds |
||
1312 | push cs |
||
1313 | pop es |
||
1314 | cmp bx, 1 |
||
1315 | ja sayerr_badsect |
||
1316 | push bx |
||
1317 | mov si, movedesc |
||
1318 | and word [si + 16 + 2], 0 |
||
1319 | mov byte [si + 16 + 4], 4 |
||
1320 | mov ah, 87h |
||
1321 | mov cx, 8000h |
||
1322 | int 15h |
||
1323 | pop bx |
||
1324 | test ah, ah |
||
1325 | jnz sayerr_memmove |
||
1326 | inc byte [si + 24 + 4] |
||
1327 | test bx, bx |
||
1328 | jz no_sys_from_primary |
||
1329 | mov ax, 2 |
||
1330 | jmp .repeat |
||
1331 | no_sys_from_primary: |
||
1332 | end if |
||
1 | ha | 1333 | |
1334 | ; SET GRAPHICS |
||
1335 | |||
514 | diamond | 1336 | xor ax, ax |
1337 | mov es, ax |
||
164 | serge | 1338 | |
2441 | Serge | 1339 | mov ax, [es:BOOT_VESA_MODE] ; vga & 320x200 |
514 | diamond | 1340 | mov bx, ax |
1341 | cmp ax, 0x13 |
||
1 | ha | 1342 | je setgr |
514 | diamond | 1343 | cmp ax, 0x12 |
1 | ha | 1344 | je setgr |
514 | diamond | 1345 | mov ax, 0x4f02 ; Vesa |
412 | serge | 1346 | setgr: |
1 | ha | 1347 | int 0x10 |
514 | diamond | 1348 | test ah, ah |
1349 | mov si, fatalsel |
||
713 | Lrz | 1350 | jnz v_mode_error |
1 | ha | 1351 | ; set mode 0x12 graphics registers: |
514 | diamond | 1352 | cmp bx, 0x12 |
1 | ha | 1353 | jne gmok2 |
1354 | |||
514 | diamond | 1355 | mov al, 0x05 |
1356 | mov dx, 0x03ce |
||
40 | halyavin | 1357 | push dx |
514 | diamond | 1358 | out dx, al ; select GDC mode register |
1359 | mov al, 0x02 |
||
1360 | inc dx |
||
1361 | out dx, al ; set write mode 2 |
||
1 | ha | 1362 | |
514 | diamond | 1363 | mov al, 0x02 |
1364 | mov dx, 0x03c4 |
||
1365 | out dx, al ; select VGA sequencer map mask register |
||
1366 | mov al, 0x0f |
||
1367 | inc dx |
||
1368 | out dx, al ; set mask for all planes 0-3 |
||
1 | ha | 1369 | |
514 | diamond | 1370 | mov al, 0x08 |
1371 | pop dx |
||
1372 | out dx, al ; select GDC bit mask register |
||
1 | ha | 1373 | ; for writes to 0x03cf |
412 | serge | 1374 | gmok2: |
76 | mario79 | 1375 | push ds |
514 | diamond | 1376 | pop es |