GM P6 PCM

[David A. Cooley]

Well,
Making progress with the P6 PCM from my 95 LeSabre...
Delco came back and said the 16156598 chip is the GMP6 CPU and it is a
variant of the Motorola MC68HC11F1 (Though GM/Delco discontinued it...).
I've been tracing address lines and data lines...
Data Lines D0 thru D7 go to: pins 42-35 on the 16056597 chip (52 Pin PLCC),
Pins 43,42,39-34 on the 16072449 chip (68 pin PLCC) and pins 5-2 & 67-63 on
the 16066285 chip (68 pin PLCC).
Address lines A0-A15 all go to the Memcal (27C512 chip), but A0-A10 only go
to pins 53 & 51-42 of the 16066285 chip... None of the address lines go to
any of the other large chips on the board.
Not sure if this helps anyone or not, and hopefully will have a little more
info from Delco on the rest of the chips in the next day or so.

Thanks,
Dave


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           David Cooley N5XMT           Internet: N5XMT at bellsouth.net
     Packet: N5XMT at KQ4LO.#INT.NC.USA.NA   T.A.P.R. Member #7068
       I am Pentium of Borg...division is futile...you will be approximated.
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