9 Aug
2012
9 Aug
'12
9:57 a.m.
I'd like to ask the list, what kind of tools/porgrams do you use in order to dump
especially older device types as we can find it in older computer equipment?
A couple of years back, I was lucky to use an old system at University in order to dump
PAL and EPROM contents of my Onyx C8000 and from a DEC DELUA board.
But since then, I've never had accessibility to such tools and I'l like to
obtain/purchase one in order to go on with programmable device content saving.
Any suggestions? Hints? Experiences?
Kind regards,
Pierre
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Pierre's collection of classic computers : http://classic-computing.dyndns.org/
9 Aug
9 Aug
10:36 a.m.
On 9 Aug 2012 at 17:57, P Gebhardt wrote:
I'd like to ask the list, what kind of
tools/porgrams do you use in
order to dump especially older device types as we can find it in older
computer equipment? A couple of years back, I was lucky to use an old
system at University in order to dump PAL and EPROM contents of my
Onyx C8000 and from a DEC DELUA board. But since then, I've never had
accessibility to such tools and I'l like to obtain/purchase one in
order to go on with programmable device content saving.
I'm assuming that the subject PALs have had the security fuses blown,
so that it's impossible to simply read the contents of the fuse map
using a programmer.
As long as it's simple combinatorial logic with no feedback terms in
PAL, it's simple enough to do a "brute force" dump. You may want to
see my blog over at vintage-computer.com on the subject. I show how
dumps were done for an AT&T 6300 video PAL, a Soundblaster PAL and a
Trantor SCSI adapter PAL.
Registered PALs and PALs with internal feedback are another kettle of
fish--I don't know of any easy way to crack that nut.
I did my dumps using nothing more than simple TTL logic feeding into
a parallel port on a PC. If I had to do it over, I'd probably use a
small MCU.to do the deed.
I don't see why EPROMs can't be dumped by a similar brute force
method. I used this method to dump a couple of bipolar PROMs; one
from the IBM PC XT and the other from a "bus
correction" PROM from
the 6300. In both cases, we found that it was possible
to recode the
contents as GAL equations.
--Chuck
10:39 a.m.
On Thu, 9 Aug 2012, P Gebhardt wrote:
I'd like to ask the list, what kind of
tools/porgrams do you use in order to dump especially older device types as we can find it
in older computer equipment?
A couple of years back, I was lucky to use an old system at University in order to dump
PAL and EPROM contents of my Onyx C8000 and from a DEC DELUA board.
But since then, I've never had accessibility to such tools and I'l like to
obtain/purchase one in order to go on with programmable device content saving.
Any suggestions? Hints? Experiences?
I've used a number of different systems, and I'm currently on the hunt for
a newer setup to handle some of the more modern parts. Two email lists I
can refer you to though are:
http://groups.yahoo.com/group/Data_IO_EPROM/
http://groups.yahoo.com/group/chipmasters/
10 Aug
10 Aug
2:37 a.m.
On Thu, 9 Aug 2012, P Gebhardt wrote:
I'd like to ask the list, what kind of
tools/porgrams do you use in
order to dump especially older device types as we can find it in older
computer equipment?
We're using an Advantech PC-UPROG for most devices, a Kontron EPP-80 for
devices not supported by PC-UPROG (like 2708) and an Intellec 8/80 for
1702 EPROMs.
I also have a DataI/O 3900 programmer, but it's modern complex crap.
There's not the faintest possibility to repair such a beast (I have a
defunct pin driver board, it's full with ASICs, and no schematics
whatsoever).
Christian
5:22 a.m.
On Aug 10, 2012, at 5:37 AM, Christian Corti wrote:
On Thu, 9 Aug 2012, P Gebhardt wrote:
I use an older Xeltek SuperPro 280, which covers a lot of older ICs (though
I found that their NMC9306-style EEPROM algorithms don't work). It's a parallel
port beast that they no longer sell (for a while, it looks like they had rebadged
it as the SuperPro Z and were still selling it really cheaply). Xeltek's stuff
has worked well for me in general, but it's not cheap.
As far as repairability, there are a bunch of unknown ICs in there with the
silkscreen actually ground off, presumably to inhibit reverse-engineering.
I'm pretty sure Xeltek isn't interested in making this a repairable part.
- Dave
I'd like to ask the list, what kind of
tools/porgrams do you use in order to dump especially older device types as we can find it
in older computer equipment?
We're using an Advantech PC-UPROG for most devices, a Kontron EPP-80 for devices not
supported by PC-UPROG (like 2708) and an Intellec 8/80 for 1702 EPROMs.
I also have a DataI/O 3900 programmer, but it's modern complex crap. There's not
the faintest possibility to repair such a beast (I have a defunct pin driver board,
it's full with ASICs, and no schematics whatsoever). 
7:01 a.m.
I'd like to ask the list, what kind of tools/porgrams do you use in order
to
dump
especially older device types as we can find it in
older computer
equipment?
A couple of years back, I was lucky to use an old
system at University in
order to
dump PAL and EPROM contents of my Onyx C8000 and from
a DEC DELUA
board.
But since then, I've never had accessibility to such tools and I'l like to
obtain/purchase one in order to go on with programmable device content
saving.
Any suggestions? Hints? Experiences?
Kind regards,
Pierre
I'm using a Data I/O 29B for the older stuff and a Willem for newer chips.
And I have an ELV IC- tester card for the TTL and CMOS IC's, it works under
DOS.
The IC database is made in a Pascal like language so it's very easy to add
unknown types.
Works very well for me ..
-Rik
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days inactive
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