Difference between revisions of "MVS cartridge pinout"

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<span style="color:#FF0000"><B>Beware !</B> 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.</span>
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<span style="color:#FF0000"><B>Beware !</B> Pinouts found elsewhere have /ROMOE and 4MB swapped, it's an error on the original schematics. /ROMOE is on pin 33 bottom, 4MB is on pin 34 bottom.</span>
  
 
See [[Signal names]] for the description of each pin.
 
See [[Signal names]] for the description of each pin.
  
(SMKDAN)
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SLOTCS goes low when the slot is used. On multi-slot boards, the signals come from [[NEO-F0]] SLOT0~5. On one slot boards, it's tied to SYSTEMB.
"SYSTEMB" appears to actually be a slot selection pin.
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The [[BIOS]] was written to ensure the signal is asserted when it does the slot check.
*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.
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[[NG:DEV.TEAM]] carts run this signal to the LPC2468FBD208. Seems never used on official PCBs. --[[User:Hpman|Hpman]] 05:22, 26 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)
 
 
 
NG:DEV.TEAM carts run this signal to a LPC2468FBD208. Seems never used on official PCB. --[[User:Hpman|Hpman]] 05:22, 26 June 2012 (CEST)
 
  
 
[[Category:Cartridge systems]]
 
[[Category:Cartridge systems]]

Revision as of 01:24, 10 September 2012

CHA bottom CHA top PROG bottom PROG top
Mvscartchabot.png Mvscartchatop.png Mvscartprgbot.png Mvscartprgtop.png

Beware ! Pinouts found elsewhere have /ROMOE and 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.

SLOTCS goes low when the slot is used. On multi-slot boards, the signals come from NEO-F0 SLOT0~5. On one slot boards, it's tied to SYSTEMB. The BIOS was written to ensure the signal is asserted when it does the slot check.

NG:DEV.TEAM carts run this signal to the LPC2468FBD208. Seems never used on official PCBs. --Hpman 05:22, 26 June 2012 (CEST)