7730 addresses

[EFISYSTEMS at aol.com]

Yes, true if the code is the same but GM tends to do things the same over and 
over so watch for similar looking tables at different addresses when the code 
is diff...hth's
-Carl Summers

In a message dated 7/14/99 11:20:19 AM Pacific Daylight Time, 
n5xmt at bellsouth.net writes:

<< Subj:	 Re: 7730 addresses
 Date:	7/14/99 11:20:19 AM Pacific Daylight Time
 From:	n5xmt at bellsouth.net (David Cooley)
 Sender:	owner-gmecm at esl.eng.ohio-state.edu
 Reply-to:	gmecm at efi332.eng.ohio-state.edu
 To:	gmecm at efi332.eng.ohio-state.edu
 
 At 01:55 PM 7/14/99 -0400, you wrote:
 >Hi all:
 >  I'm still plugging away at decoding all of the asm code for my 730.
 >a while ago Ludis posted a partial io map for a P4 ( 0x4000 - 0x400c)
 >
 >  there is a bunch of activity in the 0x0000 to 0x0ofc are ( sram I believe)
 >any idea of the layout of that area?
 >
 >then again at 0x3FC2, 0x3FC8, 0x3FE0 and 0x5000 0x5013 and 0x501b
 >
 >man is asm listings ever long.. that last largish asm reverse engineering
 >
 >while I'm bothering you all how accurate is the ecm guys mapping of the 
 >data areas
 >and are the table in the same addresses between proms??
 
 
 Pat,
 The port IO map will be the same as a standard HC11F1...  The map Ludis 
 posted I believe was at 0x4000 due to the PROM mapping in at 0x4000.
 As to the tables being in the same locations between proms, if the CODE is 
 identical between proms, then yes... However, I've seen that GM likes to 
 play with the code (or has someone different write the code for each 
 vehicle the P4 was used in!) so the tables don't necessarily correspond 
 between different proms.
  >>