diff options
| author | hpa <hpa> | 2002-06-17 02:57:27 +0000 |
|---|---|---|
| committer | hpa <hpa> | 2002-06-17 02:57:27 +0000 |
| commit | 2600c93ff5c16b523e1a9d3a4506b3e9623d102d (patch) | |
| tree | 40b508fcdca1d6cf75fda0ebdc09899aa95c4f78 /comboot.inc | |
| parent | 59c1249ed12543c49b4d68c00fbd2a81842912be (diff) | |
| download | syslinux-2600c93ff5c16b523e1a9d3a4506b3e9623d102d.tar.gz | |
Document changes due to the use of a stack frame; add new "get derivative
specific information" API call.
Diffstat (limited to 'comboot.inc')
| -rw-r--r-- | comboot.inc | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/comboot.inc b/comboot.inc index eda1f902..80b15b83 100644 --- a/comboot.inc +++ b/comboot.inc @@ -22,6 +22,8 @@ %define P_FLAGS word [bp+40] %define P_FLAGSL byte [bp+40] %define P_FLAGSH byte [bp+41] +%define P_CS word [bp+38] +%define P_IP word [bp+36] %define P_DS word [bp+34] %define P_ES word [bp+32] %define P_EAX dword [bp+28] @@ -146,6 +148,7 @@ comboot_int21: cli push ds push es pushad + cld mov bp,cs mov ds,bp mov es,bp @@ -275,6 +278,7 @@ comboot_int22: push ds push es pushad + cld mov bp,cs mov ds,bp mov es,bp @@ -432,6 +436,32 @@ comapi_pxecall equ comapi_err ; Not available %endif ; +; INT 22h AX=000Ah Get Derivative-Specific Info +; +comapi_derinfo: + mov P_AL,my_id +%if IS_SYSLINUX + mov al,[bsDriveNumber] + mov P_DL,al + mov P_ES,cs + mov P_BX,PartInfo +%elif IS_PXELINUX + mov ax,[APIVer] + mov P_DX,ax + mov ax,[StrucPtr] + mov P_BX,ax + mov ax,[StrucPtr+2] + mov P_ES,ax +%elif IS_ISOLINUX + mov al,[DriveNo] + mov P_DL,al + mov P_ES,cs + mov P_BX,spec_packet +%endif + clc + ret + +; ; This stuff should really be in the data section... ; %macro int21 2 @@ -464,6 +494,7 @@ int22_table: dw comapi_read ; 0007 read file dw comapi_close ; 0008 close file dw comapi_pxecall ; 0009 call PXE stack + dw comapi_derinfo ; 000A derivative-specific info int22_count equ ($-int22_table)/2 APIKeyWait db 0 |