Programmers and emulators

[Bob Wooten]

someone on another list was mentioning this power problem & one of the techs
that works @ Xtronics got on & said that this was not an abnormal thing.

the question was "Just for kicks I checked the AC adapter and it supposed to
convert it to 9VDC; however when I plugged it in and checked it with my
Fluke it read 12.9VDC. Is yours like this also?"
the answer was "The high voltage is normal - it is 9Vdc at the full 300mA
load"

call them before you send it back.
BW


-----Original Message-----
From: owner-gmecm at diy-efi.org [mailto:owner-gmecm at diy-efi.org]On Behalf
Of Drew Skinner
Sent: Wednesday, February 28, 2001 10:08 AM
To: gmecm at diy-efi.org
Subject: Re: Programmers and emulators


So the quick programming that everybody advertises is not a good thing? Is
there a programmer that won't do this and is still affordable? My PP was
doing weird things last week, buffer checksums before and after burns didn't
match, then it wouldn't burn anything (EPROMs were still erased after a
"burn") now the S/W pukes an error about "make sure power pack is
connected". I have confirmed power is coming from the AC adapter, although a
lot more volts than the 9VDC it says. I guess I'll box it up and shoot it
back to Kansas let them figure it out. I really needed to make some target
idle vs. temp changes too (cam doesn't like to idle @ 588rpm).

Drew

>>> marcho at flash.net 02/28 10:22 AM >>>
> This idea of life span reminds of something else I was wondering
> about.  Has anyone had bit errors in their EPROMs occur after X number of
> months with the same chip?  (Hah!! Same chip for months you ask??)  The
> programming algorithm that the PP uses is mighty quick compared to the
> recommended method that the $7,000+ Data I/O unit here at work
> uses.  Programming a 27C32 "by the book" on the Data I/O takes well over 1
> minute.   The PP, about ~2 seconds.  Short cutting on the programming time
> can lead to life span problems on the data contents within the eprom.

I did have a chip that I made for somebody 6 months ago start acting up
recently. It was a 2732A I think. Just out of the blue it started running
terrible and check engine light came on. Put the stock chip in and
everything was fine again. I burned a new chip for him, and it works fine.
hmmmmm.... it was programmed with the PB-10 though, not a PP. But it did use
the 'quick' programming algorithm.

Craig M.

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