MVS cartridge pinout
|CHA bottom||CHA top||PROG bottom||PROG top|
Beware ! Pinouts found elsewhere have ROMOE/4MB swapped, it's an error on the original schematics. /ROMOE is on pin 33 bottom, 4MB is on pin 34 bottom.
See Signal names for the description of each pin.
(SMKDAN) "SYSTEMB" appears to actually be a slot selection pin.
- On MV-2F, slot 1 A42 is connected to NEO-F0 SLOT0
- slot 2 A42 is connected to NEO-F0 SLOT1
Makes sense for 1F schematics to connect it straight to SYSTEMB since there are no other possible slots. On multislot, it comes from NEO-F0 (or equivalent) SLOT* outputs. NEO-F0 has SYSTEMB as an input so it probably only has SLOT* pins active when the cart ROMs are selected.
Is this signal ever used ? It's a dead end on all my carts. --Furrtek 06:37, 25 June 2012 (CEST)
I can't name any official boards that use it. BIOS was written to ensure it is enabled when it does the slot check though. I see it always selecting cart M1/FIX to enable the SYSTEMB output even though it never uses the M1/S1 from cart, but I don't know if any games needed a "/SLOTCS" like this.--SMKDAN 15:21, 25 June 2012 (CEST)