Category: expansion bus BIOSes
INT 1A - Intel Plug-and-Play AUTO-CONFIGURATION - GET AVAILABLE IRQs???
AX = B404h
BX = bitmap of IRQs being used???
Return: CF clear if successful
AX = 0000h
BX = available for ISA??? (not(BXin) & A127h)
CX = available for on-board I/O??? (not(BXin) & 40D8h)
DX = available for PCI??? (either not(BXin) & 0E00h or 0000h)
CF set on error
AX = error code (0051h) (see #01243)
Note: the various vector types have also been called "shareable",
"unshareable", and "avoidable"
SeeAlso: AX=B400h,INT 2F/AX=1684h/BX=304Ch