Re: Anyone have a dump of the Atari Quantum 82s153 / CF2038N address decoder logic at location 1B ?

William Boucher wrote:
> Unfortunately, I don't think it's quite that simple. That chip is not
> a bipolar prom that you can simply read data out of by applying all
> possible addresses. It's a old style programmable logic array, sort
> of like PAL, PLD, FPGA. With respect to today's simpler devices, one
> would write logic equations or draw the equivelent logic circuit and a
> compiler would then produce a jedec file that the programmer would
> then use to program the chip. I don't know whether such a programmer
> can read that info back out of the chip. I doubt it. That's why it's
> usually difficult to reverse engineer such a thing. If I'm wrong
> about that, then fantastic. If one were to study a working chip, say
> by connecting a logic analyzer to a working Quantum and capturing the
> waveforms on the pins, it probably wouldn't be too hard to figure out
> exactly what it's doing. Any modern SPLD chip could easily be used to
> replace the device if one were so inclined. Also, the pinout of the
> chip (according to the datasheet) looks super generic so there are
> probably other PAL/GAL/SPLD devices that could be used as pin for pin
> replacements.
>
> However, that's not a lot of help right now I know, but consider that
> KLOV member Riptor was selling newly programmed replacement chips with
> parts kits for the Tronic repro Quantum PCBs. I suggest contacting
> him. Obviously, he has what you are looking for or at least he knows
> who does.
>
>
> William Boucher
> http://www.biltronix.com
>
>
> ----- Original Message ----- From: "vectorlist-steve"
> <vectorlist@arcadehacking.com>
> To: <vectorlist@vectorlist.org>
> Sent: Saturday, November 17, 2012 3:20 PM
> Subject: VECTOR: Anyone have a dump of the Atari Quantum 82s153 /
> CF2038N address decoder logic at location 1B ?
>
>
>> * Looking for dump of Atari Quantum 82s153 / CF2038N address decoder
>> logic at location 1B *
>>
>> Anyone happen to have a valid dump of programmable part? I have a
>> replacement but no code load into it. :-(
>>

Do you have the part number for that IC handy? Some of these decoders
were used in other games and thus may be found in an unexpected Atari
directory...

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"
---------------------------------------------------------------------------
** Unsubscribe, subscribe, or view the archives at http://www.vectorlist.org
** Please direct other questions, comments, or problems to chris@westnet.com