Mode 4 Serial Data and stuff.....

[Ross Myers]

In Mode4 serial data comms (Controller Mode) where the user can change AFR,
SPARK etc, what would be some valid commands here?. Do you send the address
byte then value?, and how many can be sent at once?
Secondly, Paul Blackmore came up with a good idea on reading protected
Memcals, just dump out the program on the ALDL line, however a Mode2 dump is
only good for 64bytes at a time, makes for a VERY long task if it's a 512K
EPROM. Any other ideas on speeding up the process?.
And finally, can anybody confirm that GM seems to stick to a standard I.D
for any 'box' on the Line, ie. a PCM = $F4, ABS = $F9 etc.

Thanks
Ross Myers