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| author | Richard Qin <richard.qin.x@gmail.com> | 2026-11-08 07:49:23 +0800 |
|---|---|---|
| committer | Richard Qin <richard.qin.x@gmail.com> | 2026-11-08 07:49:23 +0800 |
| commit | bb20921d00c770cb30bb85a300423d9062a94d91 (patch) | |
| tree | 047e61340edaa3c3d4bf0e9d01ba7786bfda5368 /mubios/services | |
| parent | 9bfc57c3684f7aebba0f6865a1ea248f576b947f (diff) | |
| download | rcc-project-bb20921d00c770cb30bb85a300423d9062a94d91.tar.gz rcc-project-bb20921d00c770cb30bb85a300423d9062a94d91.tar.xz | |
[mubios] Multi-sector INT 13h AH=42h
Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
Diffstat (limited to 'mubios/services')
| -rw-r--r-- | mubios/services/int13.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/mubios/services/int13.c b/mubios/services/int13.c index 078fa03..e5cef43 100644 --- a/mubios/services/int13.c +++ b/mubios/services/int13.c @@ -79,8 +79,9 @@ int13_service (struct bios_regs *regs) { packet = get_edd_packet (regs); - if (packet->size != 0x10u || packet->count != 1u - || packet->lba_high != 0u || packet->lba_low > 0x0FFFFFFFu) + if (packet->size != 0x10u || packet->count == 0u || packet->count > 127u + || packet->lba_high != 0u + || packet->lba_low > 0x10000000u - (u32)packet->count) { int13_fail (regs); return; @@ -89,7 +90,9 @@ int13_service (struct bios_regs *regs) buffer_address = ((u32)packet->buffer_segment << 4) + packet->buffer_offset; - if (ata_read_sector28 (packet->lba_low, (u16 *)buffer_address) != 0) + if (ata_read_sectors28 (packet->lba_low, (u16 *)buffer_address, + packet->count) + != 0) { int13_fail (regs); return; |