ajy2208%ritcv@cs.rit.edu (05/01/89)
The following message is being posted for Dennis Beach, who doesn't have
write access to the net at this time.. Please don't Reply to this
message; rather, mail him using the address at the bottom of the
message. (even though I'll gladly forward any messages I receive
to him)..
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To all who were interested in the parallel bus information, I finally got
tired of scrounging around and called Atari. Their technical support office
gave me the pin-outs for it:
1 GRD 14 A10 26 D5 39 unused
2 ext. select 15 A11 27 D6 40 reference
3 A0 16 A12 28 D7 41 CAS
4 A1 17 A13 29 GRD 42 GRD
5 A2 18 A14 30 GRD 43 MPD
6 A3 19 GRD 31 phase 2 44 RAS
7 A4 20 A15 32 GRD 45 GRD
8 A5 21 D0 33 unused 46 R/W
9 A6 22 D1 34 RST 47 unused
10 GRD 23 D2 35 IRQ 48 unused
11 A7 24 D3 36 RDY 49 audin
12 A8 25 D4 37 unused 50 GRD
13 A9 38 extend b
Thanks to everyone who helped, and especially to Al Yarusso who posts these
messages for me since I do not have write access to this network.
- Dennis Beach
Atari hardware hacker
fwj@mentor.cc.purdue.edu