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AH = 24h AL = port status storage 00h single status for entire receive buffer 01h separate status kept for each byte in receive buffer DX = port number
Return:
AH = status 00h successful 3Ah invalid status storage specified 41h no such port 64h monitor mode already active
Note: In monitor mode, MultiDOS redirects all BIOS video output to a serial port
See Also: AH=20h"MultiDOS" - AH=25h
Category: Serial I/O - Int 14h - M
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