22 Feb
2009
22 Feb
'09
2:34 p.m.
Anyone out there have the capability to dump Motorola 6832 PROMs? I'd
like to dump the rom sets from my Tek 4051 (and expansion packs) for
some reverse-engineering but I don't currently have any means to do it.
(Can't use the Tek to do it since the system software is BASIC only and
has no low-level memory access functionality.)
Ultimately I'd like to be able to build a custom expansion ROM pack with
my own code on it, and eventually write a 4051 emulation.
(And of course if anyone out there's already dumped this stuff, I'd love
to get a copy...)
Thanks,
Josh
22 Feb
22 Feb
6:03 p.m.
On Sun, Feb 22, 2009 at 2:34 PM, Josh Dersch <derschjo at mail.msu.edu> wrote:
Anyone out there have the capability to dump Motorola
6832 PROMs? I'd like
to dump the rom sets from my Tek 4051 (and expansion packs) for some
reverse-engineering but I don't currently have any means to do it. (Can't
use the Tek to do it since the system software is BASIC only and has no
low-level memory access functionality.)
Is the 6800 socketed and in an accessible location when the system is
running? One possibility might be to use a Fluke 9010 with a 6800
probe to read the ROMs and dump them out the Fluke 9010 serial port.
-Glen
24 Feb
24 Feb
12:12 a.m.
In message <1e1fc3e90902221803s60bc7580kd28109e7169f323 at mail.gmail.com> you
wrote:
On Sun, Feb 22, 2009 at 2:34 PM, Josh Dersch
<derschjo at mail.msu.edu> wrote:
Last September i was able to build a adapter to read out the 6832 ROMs from
my Tek 4051. The difficulty is to find a EPROM reader, that is working with
three voltages for the EPROM. I found a PCB layout on the www that moves a
common EPROM programmer (with 2716 capability) into a system supplying the
other two voltages needed.
The adapter for the 6832 is a bit of solder-work.
I was thinking of a bad ROM when i first powered the 4051 up. After all the fault
were bad pcb-connectors! When the plug was connected to the keyboard pcb one ore two
pins were pushed back, out of the plug - which could be hardly seen :(
Please mail me, if you are interested in the data i was reading from the ROMs.
It is in Binary format.
Axel.
--
Anyone out there have the capability to dump
Motorola 6832 PROMs? I'd like
to dump the rom sets from my Tek 4051 (and expansion packs) for some
reverse-engineering but I don't currently have any means to do it. (Can't
use the Tek to do it since the system software is BASIC only and has no
low-level memory access functionality.)
Is the 6800 socketed and in an accessible location when the system is
running? One possibility might be to use a Fluke 9010 with a 6800
probe to read the ROMs and dump them out the Fluke 9010 serial port.
-Glen
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derschjo＠mail.msu.edu -
glen.slick＠gmail.com -
harten＠injectstar.de