Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!orion.oac.uci.edu!envy.eng.uci.edu!refling From: refling@envy.eng.uci.edu (John Refling) Newsgroups: sci.electronics Subject: Re: Programming ROM/EPROM/PLA/etc Message-ID: <280FAFF6.8254@orion.oac.uci.edu> Date: 20 Apr 91 03:05:26 GMT References: <91107.095104SCP100@psuvm.psu.edu> Reply-To: John Refling Organization: Dept. of Electrical & Computer Engineering, U.C. Irvine Lines: 31 Nntp-Posting-Host: envy.eng.uci.edu In article <91107.095104SCP100@psuvm.psu.edu> SCP100@psuvm.psu.edu (STEPHEN POLKOWSKI) writes: > >Hi all, > > I would like to develop my own eprom programmer using a 68000 family pro >cessor. My question is: where does one find the specs for programming memory c >hips? Do the manufactures publish specs on how to program their chips? Any >information would be appreciated. > >Thanks, >Steve I started in on the task of building my own programmer, but was lucky enough to find one at a swap meet for $5, so I put down the soldering iron! I did do the research though. Here are articles that I found which tell you everthing you need to know about eprom programming and give schematics too. They are based on inexpensive cpu/controllers. The 68000 seems like overkill. 1. Minimal eprom programmer. B.J. Sokol. Electronics and wireless world, June 1987. pp 619-21. + follow-up article. [uses 6402] 2. Intelligent eprom programmer. J.H. Adams. Electronics and wireless world, Nov 1984. pp 43-6. + follow-up article. [uses 8035] 3. Improved software and circuits speed eprom programming. Robert W. Davis. EDN, OCt 27, 1983. pp315-22. These include the theory and specs for programming. #3 above is best. There is also a Ciarcia's circuit cellar in byte dealing with eprom programming. Good Luck!