Thanks to Kev and Zonn for the original DUMPER.ZIP setup.
I just fixed a rotten Atari Football (4 player) by first downloading the
PROMs (16 of the suckers 1K X4) directly from the board, then burning the
image into a single 2764.
Next using two 74LS86 gates to set the OE (the first one picking
off Program 0 and 1, XORing them, then use the second XOR gate to invert
(tie one input high) and the resulting output drives the OE just
fine. Grab A11 and A12 lines (bend the legs out of the 2764) and tie pins
26, 27, 28 & 1 all together and it works just fine to replace the 16
PROMs.
Now I don't have to replace lots of sockets/PROMs with corroding
legs...
John :-#)#
At 04:26 PM 01/08/2002 -0700, Zonn wrote:
On Thu, 01 Aug 2002 16:07:07 -0700,
John Robertson <jrr@flippers.com> wrote:
>To continue this a bit, I wrote a simple dumper (based on the one in
the
>Programming manual) that runs a fair bit faster than Kev's, the only
>problem is that is sends unformatted ASCII text to my terminal
program, but
>I have no simple converters to fix this to binary...
>
>Here is the .s code
>
>
>PROGRAM 0 68 BYTES
>
> DPY-FIRST /1 LAST
/2 :Sets Start and End of
ROM
> REG1 = REG1 AND
FFF0 :
>
>1: LABEL 1
> READ @ REG1
> AUX-$E+
> INC REG1
>
DPY-$1
:Displays next memory read
> IF REG2 >= REG1 GOTO 1
> STOP
>
>A bit shorter...and faster dumping, can anyone (Zonn?) edit the small
>Hex32Bin.EXE or Hex2BIN32.EXE to just handle raw ASCII conversion to
Binary?
Sure, just send me an example of the raw ASCI dump, and I'll modify the
program
to convert the data.
-Zonn