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REMOTE ENABLE
IOTE ENABLE TEST
'10 7
:T 7; 64 @ WAIT 506
IT 78 6 WAIT 500
38
7 ;
MLR
10
6034A AS TALKER
The only difference between data readback and serial poll for the transceivers is DAV. The Serial Poll Monitor circuit
drives A4U47-2 low during serial poll to prevent the 6034A from sending not-DAV. When the serial poll data has been
put on the DIO lines A4U47-2 goes high, With the following program, the 6034A should drive the DIO lines, EOI, and
DAV. If DAV is not being sent by the transceivers, check the DAV Enable circuit and the Serial Poll Monitor circuit.
0!
rpd 765? Fi
18 ENTER 785
H
28 END
SRQ
To turn on SRQ, momentarily short A4Q2 collector to emitter. If SRQ turns on, test the rest of the circuitry by turning
power off and back on. To turn off SRQ, program:
0 :
rds
C
7
8
5 5 aR
i
9
p^SP
0
LL(705>
28 END
i)
0!
c 1 i
4s
C I'M G
1' ?
w t i 8 ? 7 ?
1 3 0 \ w
0
. i t
w t i 0 ? 7 ?
123? w
0
, i t
•?to 2
t i
5 0 8
t i
5 0 0
10
20
38
48
50
68
!
RE!"
ABORT
ASSER
flSSER
GOTO
END
DAV, NDAC, NRFD
All three handshake lines should have movement
0
•
c o d 7 ?
1
:
91 0 6
10 SEND
20 GOTO
36 END
Figure 5-37.
Tranceivers Circuit (Sheet 2 of 2)
5-53
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