[Gmecm] really weird problem ... vn v6 commodore memcal.

[Rick McLeod]

I agree that it appears to be in limp mode, and that
is probabally due to issues w/ the memcal, but may not
necessarily be bad. I have had similar experience w/
'165 in my Vette, it boiled down to (as I recall)
having to drop power to the system and let everything
drain dead, then brought back up and it worked. I
suspect it was a static thing, have had no problems to
date since (over 2 years).

Also, when burning, make sure that you get a good
clean erase, as sometimes programmers have different
thresholds for logic than due the circuits the eproms
live in, so what may be a clean burn to the programmer
may be dicey at best in the real circuit. I've seen
this quite a bit in my old days of avionics,
especially the early mosfet circuits, that would work
on the test bench independantly, but not play together
in a circuit. Pull them back out, and they met spec on
the bench. Go figure.............?

HTH, good luck.

--- mark krawczuk <krawczuk at dodo.com.au> wrote:

> hi, i have been burning eproms with  good sucsess
> untill now. 
> 
> every time i burn a chip and try it the thermo fan
> comes on, and ecl comes on as soon as i turn it on.
> it will start  and sorta run okay,  but the ecl
> stays on.
> 
> i have a memcal , with the orig  bin , on it and i
> read/burn that  and still the same problem.
> then i tried the actual original memcal in the  
> computer , and the same thing still happens, tried
> comparing  bins  , everything matches up, all ok.
> 
>  i can under stand why the orig memcal is now doing
> that  problem.and every other memcal i do now  plays
> up ..
> 
> any clues as to what could be wrong ?
> 
> thanks
> mark k>
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