3 Sep
2015
3 Sep
'15
4:56 a.m.
While I was trying to read the ROM in my 9121 for Eric Smith I found
out that my Wellon VP-280 could not do it (it could not recognize it
and only read FF FF FF FF). I could use it however to dump the ROM of
an IBM PS2 that I cannot boot anymore (so it is not entirely useless).
So I am asking what you all use to dump various ROMs from vintage
PCs/peripherals/etc? Is there a good brand out there of E(E)PROM
programmer? Do you roll your own solution with an
Arduino/RaspeberryPi?
Thanks,
Vlad.
3 Sep
3 Sep
5:41 a.m.
You may know all of this but just in case ...Assuming you have reader that
can detect ROM type and compatible with ROM you are trying to read. May be
jumper change required? For example my Logical Systems Shooter has a
different jumper thay must be installed for each EPROM type.
Bill Degnan
twitter: billdeg
vintagecomputer.net
On Sep 3, 2015 7:56 AM, "Vlad Stamate" <vlad.stamate at gmail.com> wrote:
While I was trying to read the ROM in my 9121 for Eric
Smith I found
out that my Wellon VP-280 could not do it (it could not recognize it
and only read FF FF FF FF). I could use it however to dump the ROM of
an IBM PS2 that I cannot boot anymore (so it is not entirely useless).
So I am asking what you all use to dump various ROMs from vintage
PCs/peripherals/etc? Is there a good brand out there of E(E)PROM
programmer? Do you roll your own solution with an
Arduino/RaspeberryPi?
Thanks,
Vlad.
7:15 a.m.
On 09/03/2015 4:56 AM, Vlad Stamate wrote:
While I was trying to read the ROM in my 9121 for Eric
Smith I found
out that my Wellon VP-280 could not do it (it could not recognize it
and only read FF FF FF FF). I could use it however to dump the ROM of
an IBM PS2 that I cannot boot anymore (so it is not entirely useless).
So I am asking what you all use to dump various ROMs from vintage
PCs/peripherals/etc? Is there a good brand out there of E(E)PROM
programmer? Do you roll your own solution with an
Arduino/RaspeberryPi?
Thanks,
Vlad.
Some of the early ROMs had extra voltages and unusual select logic and
for those you either need to make an adapter or get an ancient Eprom
programmer to be able to read them.
I use Data I/O 29B with a Unipak for most of my old timers, but have a
Pro-Log unit for the 1702s as well as an Andromeda programmer/reader.
The Andromeda is pretty flexible in what it will read - it also reads
1702s - but for burning I use the 29B or the Pro-Log for the earliest chips.
What is the part number of the device you are trying to read? Vlad, are
you by any chance close to Vancouver BC and thus able to drop by my shop
where we could read your device and provide you with the file?
John :-#)#
--
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames)
www.flippers.com
"Old pinballers never die, they just flip out"
5:57 p.m.
On 3 September 2015 at 10:15, John Robertson <jrr at flippers.com> wrote:
Some of the early ROMs had extra voltages and unusual
select logic and for
those you either need to make an adapter or get an ancient Eprom programmer
to be able to read them.
I use Data I/O 29B with a Unipak for most of my old timers, but have a
Pro-Log unit for the 1702s as well as an Andromeda programmer/reader. The
Andromeda is pretty flexible in what it will read - it also reads 1702s -
but for burning I use the 29B or the Pro-Log for the earliest chips.
What is the part number of the device you are trying to read? Vlad, are you
by any chance close to Vancouver BC and thus able to drop by my shop where
we could read your device and provide you with the file?
I am not sure about the
part number it was under the sticker with the
ROM version (which btw was 09121 15510 REV A) and I put it back into
the unit. I will take it out and look at it again. Unfortunately I am
at the opposite on the diagonal from you (Orlando, FL).
Regards,
Vlad.
John :-#)#
--
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames)
www.flippers.com
"Old pinballers never die, they just flip out"
6:09 p.m.
On Thu, Sep 3, 2015 at 6:57 PM, Vlad Stamate <vlad.stamate at gmail.com> wrote:
I am not sure about the part number it was under the
sticker with the
ROM version (which btw was 09121 15510 REV A) and I put it back into
the unit.
The PCA silkscreen diagram in the service manual shows F2364, which is
an 8Kx8 masked ROM. The silkscreen shows a 28-pin footprint, but it is
not clear whether the device is a 24-pin or 28-pin chip. If it is a
24-pin chip, it should be possible to read it with an EPROM programmer
configured for the Motorola MCM68764 or MCM68766 EPROMs. For an EPROM
programmer which does not support the MCM6876x, it's possible to wire
an adapter:
http://www.mess.org/dumping/2364_mask_roms
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