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CL = B8h DS:DX -> Device Map Parameter Block (DEVPB) (see #04059)
Return:
Nothing??? may destroy SI,DI,DSFormat of REAL/32 Device Map Parameter Block (DEVPB): Offset Size Description (Table 04059) 00h WORD direction (00h = get current mapping, 01h = set new mapping) 02h 4 BYTEs physical device IDs which map into LPT1 - LPT4 06h 4 BYTEs physical device IDs which map into COM1 - COM4
Note: LPT4 and COM3/COM4 are reserved on early versions of Multiuser DOS, but are supported from at least CCI Multiuser DOS v7.22 onward
Category: Other Operating Systems - Int E0h - R
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