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AX = 0024h BX = 0000h to check for function's existence
Return:
AX = FFFFh on error otherwise, BH = major version BL = minor version CH = type (1=bus, 2=serial, 3=InPort, 4=PS/2, 5=HP) CL = interrupt (0=PS/2, 2=IRQ2, 3=IRQ3,...,7=IRQ7,...,0Fh=IRQ15)
Note: Although current Microsoft documentation states that this function was introduced in v6.26, it appears to have been present as early as v6.02 (for earlier versions, use INT 33/AX=006Dh)
Category: Mouse/Pointing Device - Int 33h - M
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