.IOINQ
5-103
5
I/O Control Structure
The I/O Control Structure is of the form:
6 No info available on CM port because CM not
active
7 All legal Port Numbers are currently in use
8 All device driver Control Structures are
currently in use - can't deÞne any more Port
Numbers.
9 Synchronization Error - cannot turn off CM.
CM is already off.
10 Contradictory Request. CM port number
speciÞed but user's CM ßag is clear and no
PPCBug port is currently operating in CM.
11 Illegal Port number for .IODELETE trap call
12 Alias for Error #11
13 .IODELETE is not allowed to delete this port
(PPCBug default port(s)).
14 Alias for Error #8
15 Alias for Error #7
16 Unknown modem type. Returned Port
Number is valid, but CM is NOT set.
Reserved These locations are set to zero on return to the caller.
31 24 23 16 15 8 7 0
$00 ctrlbits
$04 baud
$08 00 00 00 protocol
$0C 00 00 00 sync1
$10 00 00 00 sync2
$14 00 00 00 xonchar
$18 00 00 00 xoffchar
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