diff options
Diffstat (limited to 'comboot.doc')
| -rw-r--r-- | comboot.doc | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/comboot.doc b/comboot.doc index 23ab384e..00743835 100644 --- a/comboot.doc +++ b/comboot.doc @@ -340,7 +340,7 @@ AX=0009h [2.00] Call PXE Stack [PXELINUX ONLY] Input: AX 0009h BX PXE function number - ES:DI PXE data buffer + ES:DI PXE parameter structure buffer Output: AX PXE return status code Invoke an arbitrary PXE stack function. On SYSLINUX/ISOLINUX, @@ -362,8 +362,10 @@ AX=000Ah [2.00] Get Derivative-Specific Information [SYSLINUX, EXTLINUX] Input: AX 000Ah + CL 9 (to get a valid return in CL for all versions) Output: AL 31h (SYSLINUX), 34h (EXTLINUX) DL drive number + CL sector size as a power of 2 (9 = 512 bytes) [3.35] ES:BX pointer to partition table entry (if DL >= 80h) Note: This function was broken in EXTLINUX 3.00-3.02. @@ -413,6 +415,7 @@ AX=000Ah [2.00] Get Derivative-Specific Information Input: AX 000Ah Output: AL 33h (ISOLINUX) DL drive number + CL 11 (sector size as a power of 2) [3.35] ES:BX pointer to El Torito spec packet Note: Some very broken El Torito implementations do @@ -731,3 +734,23 @@ AX=0018h [3.30] Query custom font This call queries if a custom display font has been loaded via the "font" configuration file command. If no custom font has been loaded, AL contains zero. + + +AX=0019h [3.35] Read disk [SYSLINUX, ISOLINUX, EXTLINUX] + Input: AX 0019h + EDX Sector number + ESI Reserved - MUST BE ZERO + EDI Reserved - MUST BE ZERO + CX Sector count + ES:BX Buffer address + Output: None + + Read disk blocks from the active filesystem (partition); for + disks, sector number zero is the boot sector. For ISOLINUX, + this call reads the CD-ROM. + + For compatiblity with all systems, the buffer should + *neither* cross 64K boundaries, *nor* wrap around the segment. + + This routine reports "boot failed" (and does not return) on + disk error. |