Vector ZCB User Manual page 12

Vector ZCB Single Board Computer
Synchronous
Rates
Synch detect
Clock
Parity
Data bits
Sync character
Parallel Ports
Port Addresses
latching
Signal level
Number of lines
Data transfer
Cable
Rev. 1-B 6/11/80
OC-56K.
Can
be
wired for internal or external synch.
8251 SYNDET line is not connected.
r-bt now connected to the external \\GrId as required
for synchronous operation.
Even
I
odd, or none, prograrmnable
5 - 8, prograrmnable
Single or double synch character can
be
progrannned.
2-8 bit, 2-4 bit can
be
programmed as 3-8 bit. Uses
an 8255 parallel I/O controller chip.
Any increment of four from OOH to PFH. Preset
addresses are: Port A, 08H: Port B, 09Hi Port C, OAH
and the Control Status Register at DBH.
Output latched, input not latched.
'ITL (input
=
1 low power TIL load: output drives 1 TI'L
load) •
8 lines per channel, programmable for input or output.
+5 VDC and GND are also provided.
Over lOOK bytes/second.
Optional. Has 34-pin female connector and 34-line
ribbon cable.
No
connector is at the
ot..~er
end,
allowing user to configure as required. Must be
ordered separately.