In the off chance someone wants to bench flash a 2006 lancer AT ecu (1860a418) here's how I did it. It's SH7055 based and I ended up flashing an evo9 ROM to it for testing. The pins won't work on the evo9 in the car, but the ROM boots up and runs enough code (including interrupts and main loop) that some features can be tested.

ground (not all necessary?):
42-c118
48-c118
tactrix 4/5

power (12+V):
101-c114 (P - not needed for flashing, but required for logging?)
98-c116 (ign)
41-c118
47-c118
66-c118 (bat)
tactrix 16

tactrix*:
7 -> 85-c116
mitsu connector/fwe 12 -> 113-c114

* tactrix pin 1 isn't necessary, but it goes to 84-c116


AT ECU pinout (looking at ECU)

Mitsu diagnostic connector pin 12 for FWE.

Tactrix pins.