[ale] EPROM programmer?

[Raj Wurttemberg]

Haha... Boris called me out. :)  I do have a GQ-4x4 EPROM programmer that I use for my Commodore hacking. 

This is what the programmer looks like:
http://www.mcumall.com/comersus/store/comersus_viewItem.asp?idProduct=4312

Here is a list of supported chips:
http://www.mcumall.com/comersus/store/mcumall_TrueUSBWillemsupportICs.asp

I think that the chips you mentioned below might really be a 2764 (the '64' represents 64k bits) for the EPROM and a 2864 for the EEPROM.

As someone mentioned earlier, the EPROMs don't usually go bad. If I suspect a bad EPROM, I usually just use the verify feature to compare the EPROM to a BIN.

I'm happy to do a compare for you if you want.  I can't find my UV eraser anywhere... I'm going to have to buy a new one.  

I never got a chance to meet up with Boris... With 11-yo triplets, my time is extremely limited these days.  I figure when they go off to college, I'll have some spare time. Haha!

Thanks,
/Raj

-----Original Message-----
From: Ale <ale-bounces at ale.org> On Behalf Of Steve Tynor via Ale
Sent: Tuesday, March 24, 2020 7:45 PM
To: Atlanta Linux Enthusiasts <ale at ale.org>
Subject: [ale] EPROM programmer?

I delurk to ask a non-Linux, but hardware hacker oriented question...

I'm restoring a vintage synthesizer (a DK Synergy) which I had put into 
what I thought would be temporary hibernation, but turned into 20 years 
of storage.

It mostly works, but testing suggests that at least one of the EPROMs 
has degraded and needs to be replaced.  As long as I'm at it I'd like to 
replace all four (I'm told that I can use either 2765 UV erasable or 
2864 electrically erasable EPROM's)

I have binary images (BIN files) for each of the EPROMs, but no way to 
program them.

Can anyone on the list help?   My only other thought is to seek out the 
various local "makerspaces".

Thanks!
Steve



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