diff options
Diffstat (limited to 'comboot.doc')
| -rw-r--r-- | comboot.doc | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/comboot.doc b/comboot.doc index ee2ca07e..8680b711 100644 --- a/comboot.doc +++ b/comboot.doc @@ -460,6 +460,8 @@ AX=000Ch [2.00] Perform final cleanup ISOLINUX: 0000h Normal cleanup + EXTLINUX: 0000h Normal cleanup + All other values are undefined, and may have different meanings in future versions of SYSLINUX. @@ -583,3 +585,41 @@ AX=0013h [3.08] Idle loop call any periodic activities required by the filesystem code. At the moment, this is a no-op on all derivatives except PXELINUX, where it executes PXE calls to answer ARP queries. + + Note: it's safe to call this API call on previous SYSLINUX + versions (2.00 or later); it will just harmlessly fail. If + API call INT 22h, AX=0015h, bit 1 is set, there is no reason + (but safe) to call this routine. + + +AX=0014h [3.10] Local boot [PXELINUX, ISOLINUX] + Input: AX 0014h + DX Local boot parameter + Output: Does not return + + This function invokes the equivalent of the "localboot" + configuration file option. The parameter in DX is the same + parameter as would be entered after "localboot" in the + configuration file; this parameter is derivative-specific -- + see syslinux.doc for the definition. + + +AX=0015h [3.10] Get feature flags + Input: AX 0015h + Output: ES:BX pointer to flags in memory + CX number of flag bytes + + This function reports whether or not this SYSLINUX version and + derivative supports specific features. Keep in mind that + future versions might have more bits; remember to treat any + bits beyond the end of the array (as defined by the value in + CX) as zero. + + Currently the following feature flag is defined: + + Byte Bit Definition + ---------------------------------------------------- + 0 0 Local boot (AX=0014h) supported + 1 Idle loop call (AX=0013h) is a no-op + + All other flags are reserved. |