BP Microsystem CP-1128

[tim_bo]

Hello everybody and thanks a lot that I was able to join this great forum!

I bought the CP-1128 from BP Microsystem as in "good condition" with the original box and original accessior.

After some usage on EPROM's I wanted to program some GAL's and recognized some issues with the programmer: I was not able to program any of them.

Used Software: bpwsoft-03 on a Windows98se system.

The result of the self hardware diagnostic programm is as follows:

*************************************************************
Port=278, Model=CP-1128, Revision 1.06 pcb REV.G 28 pins 8.0MHz 50 27 13,
Communications self test:
0/10000  Passed test.
Executing Timing test:
Passed test.

Testing Pin Drivers:
Pin  4:  in HI-Z mode H->Z is set to  0.0 but is 25.1. 
 at QH:  is set to  3.4 but is  3.3. 
Testing VCC bypass:
                                  Pin 28 24 20 18 16
Testing independence of pin drivers:
Testing current sinks:
Test complete.  2 errors detected.
Command failed.
*************************************************************

Disabling the continuity checkbox leads to a success, but can I trust the programmer anymore ?

Does anyone have experiencies with this programmer ?

I can not interprete this results now, so i wanted to ask here. Maybe there is someone who can help me?

BR

[m k]

One pin driver seems to be stuck.

What disabling the continuity checkbox means?

[tim_bo]

Hi! Yes I know.

I am step further, because I desoldered the group of IC's around pin 4 and tested them with an IC tester.

One latch of a 74HCT259 is not working properly.

Tomorrow I'll get a new one than i can tell you more. Hope that was all.

Disabling the continuity check means, that the programmer does not check every (bond) connection to the die (inner core) of the IC and start the program routine directly.

BR

[m k]

If we assume that 25.1 is a voltage and pin 4 is the actual pin number you definitely want all possible tests before actual programming.
Putting 25V to I/O pin is not necessarily very healthy.

[tim_bo]

Update:

On further tests, I recognized abnormal high temperatures on the pindrivers (especially the MOSFETs and the right culumn of small plastic Transistors).
But none of the semiconductor which belongs to the pindriver 1-8 were damaged.

The fault was a broken resistor network (SIL 9-8 5.6k) next to the heavy transformer

After replacing the broken part the programmer works perfekt again.