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