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GALEP-4
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r6502:
Hello all,

I just bought at ebay a used older GALEP-4, that should be able to program vintage EPROMS and works on older PC's parallel port.

Device seems to be running for reading very well, but for programming the devices I do not see what programming voltages are used for a specific selected chip. For example, for a 27C32 is available with different programming voltages from different manufacturer so I have always to look into different data sheets what programming voltages are used for the specific chip. In their software I have only the option to choose a specific chip, no further informations are shown like programming voltage and programming algorithm.

I asked the  manufacturer  if / how it is possible to define a new chip, but got the answer, that they do not like to give details how chips are defined.

It would be much more convenient, to specify the pin layout e. g. 27C32 and specify the programming voltage and the programming time / algorithm.

is there a programmer on the market that fulfils this?

I also tried a TOP3100, but this fails also programming some EPROMS.

Need VPP=25V

Any suggestions?

Guido

coromonadalix:
sadly you have to check the specs / supported ic list of many programmers to find the one you need ...  vs brand and ic model(s)

on some new tl866 gen 2  / rev 2          people added  coin cell in the supply line to boost the programming voltage  ...  could be a solution ?
gslick:
I've never wasted my money buying cheap device programmers. The ones I almost exclusively use are BP Microsystems.

If you wait around long enough on eBay, you can sometimes find decent deals on older BP-1200 and BP-1400 device programmers, including the DIP-48 socket module. I've seen several decent deals on those go by that I've passed on because I have more device programmers than I need now. Those have support for 25V VPP NMC27C32 ERPOMs. Those older models use an LPT interface, and haven't had any software updates for a few years.

The ones I use now are the newer BP-1410 and BP-1610 which have USB interfaces, and currently receive regular software updates. Those aren't cheap on eBay though, a few hundred $ or so currently.
nctnico:
The GALEP programmers used to be the industry standard in Europe for several decades. These where not particulary cheap either. Going for a printer-port only solution is a dead end nowadays. I used to have a printer-port GALEP3 but it is long gone due to lack of computers with a printer port.
gslick:

--- Quote from: nctnico on July 20, 2023, 08:52:33 pm ---The GALEP programmers used to be the industry standard in Europe for several decades. These where not particulary cheap either. Going for a printer-port only solution is a dead end nowadays. I used to have a printer-port GALEP3 but it is long gone due to lack of computers with a printer port.

--- End quote ---

Ah, OK. Well then, what device programmer would you buy to program a 25V VPP NMC27C32 ERPOM?

Most likely someone that needs to program a NMC27C32 isn't all that concerned about dead-end solutions.
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