Make your own free website on Tripod.com
Up ] Docs Home ]

Format of COMM-DRV port control block

Back ] Next ]

Offset Size Description

00h

WORD

port IO address

02h

WORD

port IRQ

04h

WORD

baud rate

06h

WORD

parity

08h

WORD

data bits

0Ah

WORD

stop bits

0Ch

WORD

break status (0000h off)

0Eh

WORD

flow control protocol

10h

BYTE

input block

11h

BYTE

output block

12h

WORD

low threshold

14h

WORD

high threshold

16h

WORD

segment of buffer

18h

WORD

offset of buffer

1Ah

WORD

input buffer length

1Ch

WORD

output buffer length

1Eh

BYTE

auxiliary address

1Fh

BYTE

spare

20h

4 WORDs

spares