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The.4K board tester is at PROM location 0400H.
tester is at 0500H.
TO USE:
1.
Jumper the board to be tested to respond to addresses
FxxxH.
2.
Insert the board in an 8080 with CPU-A, CP-A and PROM
containing the test routine.
3.
Power the 8080 up.
EXAMINE and press RUN.
4.
The test routine will run, "Messages" are displayed in
the
LED's labelled "programmed output" in the upper
8
left corner of CP-A.
MESSAGES:
LED Display
(Hex) (Binary)
0 1
0 0 0 0 0 0 0 1
0 2
0 0 0 0 0 0 1 0
03
0 0 0 0 0 0 1 1
FI
1 1 1 1 0 0 0 1
F2
1 1 1 1 0 0 1 0
F3
1 1 1 1 0 0 1 1
FF
1 1 1 1 1 1 1 1
ERROR PROCESSING:
When an error occurs, a "message" of Fl, F2, or F3 will be
displayed on the LED's.
1.
Change one of switches 8-15.
2.
The LED's will display the high
at the location that failed.
3.
Change one of switches 8-15.
4.
The LED's will display the low
5.
Change one of switches 8-15.
.
The LED's will display the data that the location is
6
supposed to contain.
7.
Change one of switches 8-15.
.
The L ED1s w i l l display the data the location actually
8
contains.
9.
Change one of switches 8-15.
10. The test will start over with Phase I.
Set the switches to 0400H, press
Meaning
______
Running Phase I test - no errors yet
Running Phase II test - no errors yet
Running Phase III test - no errors yet
Error in Phase I: data will follow
Error in Phase II: data will follow
Error in Phase III: data will follow
Test completed without errors: change
any "programmed input" switch (#'s 8-15)
to start test over.
To get information on the errors:
bits of the address
8
bits of the address.
8
RAM 4A
Board Tester
The IK
6
25
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