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Main => Main Forum => Topic started by: GMZombie on February 08, 2009, 01:37:03 pm

Title: original tempest Aux board question
Post by: GMZombie on February 08, 2009, 01:37:03 pm

this should be an easy answer but is there supposed to be 6 big z80 like size chips on the aux board or only 2. the 2 are audio I/O N-Channel MOS/LSI Custom chip

but the 4 spots where i believe the other ones are missing are well its called in the manual a transistor array...

im lost on this and wonder if they even had chips in there. thanks for the answers

Title: Re: original tempest Aux board question
Post by: Paladin on February 09, 2009, 12:21:44 am

The chips should all be there.  Here's a picture of the aux board.
(http://coinoparcade.com/pcbs/Atari%20Tempest%20PCB%201.jpg)

Title: Re: original tempest Aux board question
Post by: GMZombie on February 17, 2009, 10:38:49 pm

anybody know what those chips do...or where i can get a new set of them

Title: Re: original tempest Aux board question
Post by: Daviea on February 19, 2009, 05:24:49 am

Those are AM2901 chips which are bit slice processors.  Essentially, they process the vector math for Tempest, Battlezone, etc.  You can get them from www.coinopchips.com.  Look for them in the CPU/Processors section.

Good luck.

David Adams
RAM Controls

Quote from: GMZombie on February 17, 2009, 10:38:49 pm

anybody know what those chips do...or where i can get a new set of them