MVS cartridge pinout: Difference between revisions
(Created page with "{| class="regdef" align="center" style="text-align:center;align:right;" |CHA bottom |CHA top |PROG bottom |PROG top |- |200px |[[File:mvscartchatop....") |
No edit summary |
||
| Line 23: | Line 23: | ||
Is this signal ever used ? It's a dead end on all my carts. | Is this signal ever used ? It's a dead end on all my carts. | ||
--[[User:Furrtek|Furrtek]] 06:37, 25 June 2012 (CEST) | --[[User:Furrtek|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.--[[User:SMKDAN|SMKDAN]] 15:21, 25 June 2012 (CEST) | |||
Revision as of 13:21, 25 June 2012
| 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)