[sdiy] Suggestions sought: MPU programmers

[jays at aracnet.com]

Might check the parts before you buy a programmer. Some masked (program is actually put into silicon when it's made) and OTP (One Time Programmable) parts are not readable. Also some parts have memory protect bits that once set you can't read the memory externally. I'd expect most of the commercial (big name synth & effects manufactures) stuff to be made that way.

Good luck.
Jay S.

John Mahoney wrote:

> The message below was posted by David Lacey to the Analogue Heaven 
> list, but I'll bet this group is more inclined to have the answer. 
> Feel free to answer on SDIY or directly to me -- I'll forward through 
> to AH -- or to David (per the CC address).
> 
> John
> 
> 
> I want to suck the code from some 8048s and burn backup 8748s for several
> pieces of gear.
> 
> I got a bunch of 8748s, and I got a Needhams EMP-21 to do the job.  But it
> is missing the 'family modules' that allow it to do the 8x48s.  Sadly
> Needhams is gone and I can't get the part.
> 
> Anybody care to recommend a programmer that will read/write these beasts
> without breaking the bank?  It's murder figuring out which ones might do it
> and I can't find anything cheap.
> 
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