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Int 14 Fn 24 - Alloy Mw386 V2+ - Change Physical Port Parameters [S]
AH = 24h
CX = physical I/O port number
DS:DX -> configuration table (see below)
Return: AH = 00h
Note: invalid port numbers are merely ignored
See Also: INT 17/AH=96h
Format of configuration table:
Offset Size Description
00h BYTE baud rate (see below)
01h BYTE data bits (00h=5, 01h=6, 02h=7, 03h=8)
02h BYTE parity (00h none, 01h odd, 02h even)
03h BYTE stop bits (00h=1, 01h=2)
04h BYTE receive flow control
00h none, 01h XON/XOFF, 02h DTR/DSR, 03h XPC, 04h RTS/CTS
05h BYTE transmit flow control (as for receive)
Values for baud rate:
00h 38400
01h 19200
02h 9600
03h 7200
04h 4800
05h 3600
06h 2400
07h 2000
08h 1200
09h 600
0Ah 300
0Bh 150
0Ch 134.5
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