Enterprise Forever
:UK => Hardware => Maintenance => Topic started by: Zozosoft on 2013.June.18. 10:56:28
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Unfortunately the Nick (http://enterprise.iko.hu/technical/ET1-3_Nick_Chip_Programmers_Guide.pdf) and Dave (http://enterprise.iko.hu/technical/DAVE_ISSUE5.pdf) documentations don't include the chips pinout.
On the schematics (http://enterprise.iko.hu/schematics.htm) can be found, but hard to find specific pin on the real chip, especially about one strange thing: the "logical" chips have a 68 pins, but the real ones (http://ep128.hu/Album/Pic/NICK.jpg) have a 72! Easy to find two, because not have a pin, but another two looks a real pin.
Bruce! Do you have any idea why these "fake" pins?
Finally I collected out the pinouts, and SlasNet made very nice graphics. Thanks!!!
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Bruce! Do you have any idea why these "fake" pins?
Very useful! Will you put them on your web site along with the schematics so people can find them easily?
No I don't know why there are fake pins but it is very possible that 72 pins was just a standard size from the manufacturers. The contents of the chips was custom but I doubt whether the actual package and pinout shape was (although I can't actually remember!). It is also possible that one or more of the "spare" pins is an undocumented test pin, ie. something interesting to the designers (and no doubt you :twisted:!) is output on them.
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Will you put them on your web site along with the schematics so people can find them easily?
Done! (http://enterprise.iko.hu/schematics.htm)