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Output system(print) relation point
PP IN signal on the PRT-11 board is the signal that is risen by every print 1 line
outputted from CPU on the PRT-11 board. The print data demand signal PDREQ to IF-687
board is outputted every | line (rising down), when receiving the necessary data, the PDREQ
signal is risen.
The print data from IF-687 board is synchronized the FDCK signal and outputted.
PRT-11 PP_IN (TP216)
IF-687 PDREQ (TP227)
PRT-11 FDCK (TP209)
5.48 ms (line period)
PRT-11 PP_IN (TP216)
Timing is changed by each line.
IF-687 PDREQ (TP227)
PRT-11 FDCK (TP209)
the number of FDCK rising
is changed by print data.
mer,
6-2
PRT-11 FDCK (TP209)
| | | | | |
PRT-11 FD 0 through 7
(TP201 through 208)
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