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REAL/32 - DEV_MAP - GET/SET SERIAL/PARALLEL PORT MAPPINGS

CL = B8h
DS:DX -> Device Map Parameter Block (DEVPB) (see #04059)

Return:
Nothing???
may destroy SI,DI,DS

Format 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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