User`s manual

Appendix A- Introduction
Parts in the following list are listed by manufacturer that can be
programmed on the 9000. In most cases you probably could use the
“generic” selection of that part except for the notable exceptions of the
27256. Notice! On the model 9000, some menu selections are different
from the other GTEK eprom programmers.
If you don’t see your part on the list, you may send a data sheet to
GTEK or try calling GTEK to see if we can tell you about a particular
part. BE SURE to have a data sheet handy when calling unless you
have not been able to obtain one, in which case we may or may not be
able to tell you if it will program or how to program it.
GENERAL RULES
1–"A" and some “B” version parts program at lower voltages than the
standard parts. If you try to Program, Verify, or List or Output an “A” or
“B” part using a “standard” selection or the incorrect algorithm, the
part will probably die within microseconds due to overvoltage on the
programming pin. The part will appear to be OK and may even still
contain any data that you had previously programmed in it, but the
symptom will be *WP ERR @ nnnn. This goes for the MPU’s also.
2–CMOS eproms generally use different algorithms to program than
the NMOS parts, but if the voltage is the same, you might try the NMOS
equivalent if you want to try programming the part adaptively (a lot
faster).
3–ROMs are generally readable on the programmer if you take precau-
tions to not use a selection that is going to use the Verify mode to read
it. If you’re not sure, simply use a spec sheet for the menu selection
and part you would like to use and check the Vpp pin during reads (OI
or L commands) to see if programming voltage appears there. This is
done with NO part in the socket of course. Generally the CMOS part
selections and the 27512 and 68766 do not use the Verify mode, only
the Read mode. This may not always hold true on the 9000.
ROM equivalents of MPU’s may only be read after modification of the
programming socket or recalibration of the programmer. You must call
GTEK for details of this.
Model 9000 Appendix A
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