I'm trying to figure out how to read out the FLASH SIMM without de-soldering the Flash ICs
I've created a map between the LH28F320STKD -> SIMM -> T56 Programmer
There's a few signals that need investigation, shown in RED.
mainly the LCS_FLASH (CS Selects), Program Voltage ,RYBY (why are there 6 of these, 3 makes sense) , PA0 (possible tried low) ,PA1 (should be straight thru), byte# (likely tied high)
I'll have to ohm out the simm to figure out
Ill still have to de-solder U74 from the processor board (no way around that)
has anyone ever use JTAG on a 68040?
I dont' see a def for it in OCD
if all you can do is a boundary scan can you access memory or do you need debug for that?