| 206,9 → 206,11 |
|---|
| ; out: if there is next cluster: CF=1, eax = next cluster |
| ; out: if there is no next cluster: CF=0 |
| push di bx |
| push ds |
| push ds es |
| push ss |
| pop ds |
| push ss |
| pop es |
| push ax |
| shr eax, 7 |
| ; eax = FAT sector number; look in cache |
| 248,10 → 250,9 |
|---|
| .cache_append: |
| ; read FAT |
| mov [di+4], eax |
| push es |
| pushad |
| lea cx, [di + 0x10000 - 0x8400 + (0x6000 shr (9-3))] ; +0x10000 - for FASM |
| shl cx, 9-3 |
| lea cx, [di + 0x10000 - 0x8400 + (0x6000 shr (9-4-3))] ; +0x10000 - for FASM |
| shl cx, 9-4-3 |
| mov es, cx |
| xor bx, bx |
| mov cx, 1 |
| 259,7 → 260,6 |
|---|
| sub eax, [bp-10] |
| call [read_sectors2] |
| popad |
| pop es |
| @@: |
| ; add new sector to the end of list |
| mov bx, di |
| 269,15 → 269,15 |
|---|
| mov [bx], di |
| mov [di+2], bx |
| ; get requested item |
| lea ax, [di + 0x10000 - 0x8400 + (0x6000 shr (9-3))] |
| lea ax, [di + 0x10000 - 0x8400 + (0x6000 shr (9-4-3))] |
| pop di |
| and di, 0x7F |
| shl di, 2 |
| shl ax, 9-3 |
| shl ax, 9-4-3 |
| mov ds, ax |
| and byte [di+3], 0x0F |
| mov eax, [di] |
| pop ds |
| pop es ds |
| pop bx di |
| ;and eax, 0x0FFFFFFF |
| cmp eax, 0x0FFFFFF7 |
| 557,7 → 557,7 |
|---|
| pushf |
| pop [flags] |
| jnc @f ; no next cluster => return |
| mov dl, 1 ; dh=0 in any case |
| mov dl, 1 |
| test di, di |
| jz @f ; if there is next cluster but current limit is 0 => return: limit exceeded |
| push di |
| 564,9 → 564,10 |
|---|
| jmp clusloop ; all is ok, continue |
| hooked_err: |
| mov sp, 7C00h-14-2 ; restore stack |
| mov dx, 3 ; return: read error |
| mov dl, 3 ; return: read error |
| @@: |
| mov bx, dx |
| mov bl, dl |
| mov bh, 0 |
| mov ax, [filesize] |
| mov dx, [filesize+2] |
| ret |
| 656,8 → 657,8 |
|---|
| secondary_loader_info: |
| dw 0, 0x1000 |
| dw 0x30000 / 0x1000 |
| db 'kord/loader',0 |
| aKernelNotFound db 'Fatal error: cannot load the secondary loader',0 |
| db 'kernel.mnt',0 |
| aKernelNotFound db 'Fatal error: cannot load the kernel',0 |
| |
| ;if $ > 0x8200 |
| ;error 'total size of kordldr.f32 must not exceed 1024 bytes!' |