DCA(4) BSD Programmer's Manual (HP300 Architecture) DCA(4)
d
\bdc
\bca
\ba - HP 98644A communications interface
S
\bSY
\bYN
\bNO
\bOP
\bPS
\bSI
\bIS
\bS
d
\bde
\bev
\bvi
\bic
\bce
\be d
\bdc
\bca
\ba0
\b0 a
\bat
\bt s
\bsc
\bco
\bod
\bde
\be9
\b9 f
\bfl
\bla
\bag
\bgs
\bs 0
\b0x
\bx1
\b1
D
\bDE
\bES
\bSC
\bCR
\bRI
\bIP
\bPT
\bTI
\bIO
\bON
\bN
The 98644A is a single port EIA RS-232C (CCITT V.28) communications in-
terface with a single character buffer. Such an interface is built-in to
Input and output for each line may set to one of following baud rates;
50, 75, 110, 134.5, 150, 300, 600, 1200, 1800, 2400, 4800, 9600 or 19200.
An optional argument _
\bf_
\bl_
\ba_
\bg_
\bs may be set to 1 if the line should be treated
as hard-wired with carrier always present or 0 if modem control is de-
D
\bDI
\bIA
\bAG
\bGN
\bNO
\bOS
\bST
\bTI
\bIC
\bCS
\bS
d
\bdc
\bca
\ba%
\b%d
\bd:
\b: s
\bsi
\bil
\blo
\bo o
\bov
\bve
\ber
\brf
\bfl
\blo
\bow
\bw.
\b. The single-character input ``silo'' has overflowed
and incoming data has been lost.
S
\bSE
\bEE
\bE A
\bAL
\bLS
\bSO
\bO
Data loss is possible on busy systems with baud rates greater than 300.
The d
\bdc
\bca
\ba has never been tested with modem control enabled or on anything
but the built-in interface.
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