Compuprint 9058 Programmer Manual Manual de usuario Pagina 135

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The Parallel Interface
A78408098-003
C.6
1284 Mode signal names are shown with their Compatibility mode
(Centronics) names in parenthesis ( ) for the bidirectional link.
Signal Name Pin N° for
Signal Wire
Pin N° for
Return Wire
Source
HostClk (nStrobe) 1 19 HOST
AD1 (Data 1)
AD2 (Data 2)
AD3 (Data 3)
AD4 (Data 4)
AD5 (Data 5)
AD6 (Data 6)
AD7 (Data 7)
AD8 (Data 8)
2
3
4
5
6
7
8
9
20
21
22
23
24
25
26
27
HOST in Compatibility mode
and negotiation phase.
NOT USED in Nibble mode.
BIDIRECTIONAL in Byte
mode.
PrtClk (nAck) 10 28 PRINTER
PrtBusy (Busy) 11 29 PRINTER
AckDataReq (PError) 12 28 PRINTER
Xflag (Select) 13 28 PRINTER
HostBusy (nAutofd) 14 30 HOST
Peripheral Logic High
(+ 5V)
18 PRINTER
n.a. (nInit) 31 30 HOST
nDataAvail (NFault) 32 29 PRINTER
1284 Active (NSelectIn) 36 30
Common Logic Ground 16 and Return Wires
Chassis Ground 17
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