diff options
Diffstat (limited to 'src/boot/stage2_real_functions.asm')
| -rw-r--r-- | src/boot/stage2_real_functions.asm | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/boot/stage2_real_functions.asm b/src/boot/stage2_real_functions.asm index 8b4b5af..3810963 100644 --- a/src/boot/stage2_real_functions.asm +++ b/src/boot/stage2_real_functions.asm @@ -88,9 +88,9 @@ probe_and_fix_disk_geometry: ; IN dl: drive to read from read_from_disk: - mov bx, 0 ; where to store the data + mov bx, 0x0880 ; where to store the data mov es, bx - mov bx, 0x8800 ; 3072 bytes after first sector + mov bx, 0x0 ; 3072 bytes after first sector .read_next_sector: @@ -108,6 +108,11 @@ read_from_disk: jmp .read_next_sector .next_head: + shr bx, 4 ; make it a segment offset.. + mov ax, es + add ax, bx + mov es, ax ; ..and add it to ES + mov bx, 0x0 ; we also reset bx and update es to avoid hitting the 64k wrap around point mov [CURRENT_SECTOR], BYTE 1 ; start from first sector again add [CURRENT_HEAD], BYTE 1 ; advance head mov ch, [NOF_HEADS] |