BIOS32: Difference between revisions
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If the service is not supported, the AL register will contain either 0x80 or 0x81. (The documentation is ambiguous on this specific value, so it may be better to check for a non-zero value)
== Well Known Services ==
The services listed below have been found on real hardware, but may not be supported by some (or even most) systems.
{| {{wikitable}}
|+<b>Service List</b>
|-
|<b>Component ID|| Name</b>
|-
|"$PnP" || Plug-n-Play BIOS
|-
|"$PCI" || PCI BIOS
|-
|"$PIR" || PCI IRQ Routing Table
|-
|"$PMM" || POST Memory Manager
|-
|"$BC$" || PXE Base Code (BC) Rom ID
|-
|"$ACF" || Plug-n-Play Auto Config
|-
|"$BLK" || Unknown
|-
|"$WDS" || Unknown
|-
|"$SNY" || Unknown
|-
|"$SDS" || Unknown
|-
|"$SDM" || Unknown
|-
|"$IRT" || Unknown
|-
|"$CFD" || Unknown
|-
|"$BBS" || Unknown
|-
|"$ASF" || Unknown
|-
|"$$CT" || Unknown
|-
|"MPTN" || Unknown
|-
|"PCI " || Unknown
|-
|}
== See Also ==
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[http://www-pc.uni-regensburg.de/hardware/TECHDOK/BIOS_32BIT_SERVICE.PDF Phoenix BIOS 32-bit service proposal]
[https://groups.google.com/forum/#!msg/alt.os.development/pgREOB7YEws/J3UZ1sbvQnsJ Google Groups post about known services]
[[Category:BIOS]]
[[Category:X86]]
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