intro, hyper7148

[Ken Kelly]

Tom,
	Roger's got it right! The 8051 refers to 16188051, which is the delco # for the
PCM used in all 95, and i think 94 LT1 engines. It appeared in Camaro, Firebird,
Impala, Caprice, Corvette, and Roadmaster applications. It uses the same
processor as yours, and I suspect the same Protocols. I have some data on the
96-97 Lt1 controller, and while I know it supports ODB-II, it is a direct pin
for pin compatible replacement for the 96 PCM. Actually many 96 LT1 owners use a
95 PCM when they modify the engine to avoid problems with the OBD-II tests. Many
of the internal data locations appear to be the same. I think they just added
code to the 95 software.

	Does your PCM have 2 28C512 Flash memories? If it does there is a good chance
that it shares some code. If you have prom images send me the binaries. I will
use them as I test my editor and see if they share data locations with the 8051.

	As I said earlier I would be very interested in learning the read and write
protocol for this PCM. Would you share your findings with Dave and I.

		Ken

Tom Sharpe wrote:
> 
> How does the 8051 compare with the HC11? Faster? Bigger? 16 bit??? There is a pascal
> compiler for the 8051 on the web somewhere.......   Tom
> 
> Ken Kelly wrote:
> 
> > Tom,
> >         I am working with Dave Hemstead on the 8051(95 Camaro LT1). I have currently
> > socketed my PCM so I can read/write the Flash Memory. I suspect that it uses the
> > same protocol as the 97. Since my PCM is now socketed it is a very safe place to
> > test a read & write program. I am working on a prom editor for the 8051. It has
> > two 28F512's labeled EVENT SIDE and TIME side. Maybe we could work together on
> > this. Dave has put together a scan tool for the 8051 and is currently
> > disassembling the Prom, and I am working on the editor.
> >
> >                 Ken
> >