Re: Help to copy PAL16 / GAL16 / GAL20 ICs
- From: John Fields <jfields@xxxxxxxxxxxxxxxxxxxxx>
- Date: Sun, 31 Jul 2005 19:08:52 -0500
On Sun, 31 Jul 2005 19:29:33 -0400, "Henry"
<apl2research@xxxxxxxxxxx> wrote:
>I'm currently working on a project to "clone" some old computer boards I
>have. The companies are long since out of business. These boards are from
>around 1983 to 1985.
>
>Please be a little patient with me as I'm not that familiar PAL/GAL ICs and
>can use all the advice I can get.
>
>I'm researching in to copying a few of the PAL16 / GAL16 / GAL20 ICs on
>these boards. I've been reading that it is possible to "read protect"
>(aka - registered) these chips and fear I may run in to this issue.
>
>I'm going to be purchasing an EPROM/PAL/GAL programmer in the near future
>and could use some advice on what models and software may be appropriate for
>my work. My needs are pretty basic and most of the technology I'll be
>working with is from the 1980s. I've been look at an Advin Pilot-MVP, but
>fear it may be more programmer then I might need. Any recommendations?
>
>If the PAL16 / GAL16 / GAL20 ICs are "read protected" (aka - registered)
>what options do I have to try and reverse engineer these chips? What
>options do I have to try and
>figure out how these chips are programmed? I have some basic electronics
>knowledge, enough to be dangerous, but nothing advanced enough to guide me
>with PAL/GAL ICs. Any and all advice will be appreciated.
>
>I'm also looking for someone to help or "tutor" me with these PAL/GAL ICs
>and I'd be willing to pay for this service.
---
How much?
---
>You can email me directly at "apl2research -at- comcast.net" or post a
>replay
>here. Thanks in advance for your help.
>
>
>Henry
>
--
John Fields
Professional Circuit Designer
.
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