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Fix multi-sector read using CHS mode

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This commit is contained in:
Aiken Harris
2025-10-10 15:10:42 +02:00
parent 32bacdd228
commit 56a1a811b9
1 changed files with 3 additions and 2 deletions
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5
boot/bootsect/espboot.S
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@@ -151,7 +151,7 @@ ReadSectors:
ReadCHS: ReadCHS:
/* Read sectors using CHS */ /* Read sectors using CHS */
popal pushw %cx
pushal pushal
xorl %edx, %edx xorl %edx, %edx
movzwl SectorsPerTrack - Start(%bp), %ecx movzwl SectorsPerTrack - Start(%bp), %ecx
@@ -169,8 +169,9 @@ ReadCHS:
orb %ah, %cl orb %ah, %cl
movw $0x0201, %ax movw $0x0201, %ax
int $0x13 int $0x13
jc DiskError
popal popal
popw %cx
jc DiskError
incl %eax incl %eax
movw %es, %dx movw %es, %dx
addw $0x20, %dx addw $0x20, %dx