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DARKSOFT CPS1 Multi - Support thread

I found this project on Github that let's you change the questions in Quiz & Dragons. https://github.com/cschmidt0121/qad_custom
We'd like to do this and be able to refresh it with new questions every few months. I figured using the multi would be easier since I could place the file on an SD card rat
her than reprogramming ROMs every time. What I'm tripping up on is once I've updated the ROM files with the new questions, how do I then convert them to work on the multi?
Appreciate any help.
 
bagheera369 said:
K... tested on a 2nd cabinet.

Button presses causing sync flickering almost completely gone, does happen once in a very rare while still.

New issue came up, in that Punisher boots to "ram error" and C&D will not boot at all.

Still open to any advice.
Click to expand...
The ram error is most likely a bad/loose Qsound wire connection which is shy I always replace the 3-pin Dupont connector with JST NH which actually locks.

It could also be a bad z80 on the multi or it may need to be re-seated.
 
Mitsurugi-w said:
The ram error is most likely a bad/loose Qsound wire connection which is shy I always replace the 3-pin Dupont connector with JST NH which actually locks.

It could also be a bad z80 on the multi or it may need to be re-seated.
Click to expand...

K. I'll take a look at that, and see what I can do. It does have the cpu clock multi on it.


Would that also have anything to do with the button presses glitching the video?
 
bagheera369 said:
K. I'll take a look at that, and see what I can do. It does have the cpu clock multi on it.


Would that also have anything to do with the button presses glitching the video?
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@Mitsurugi-w - Swapped the Z80 with a known working one, no change.
Double checked all the JST NH and solder connections from the clock mod to the two solder points, and back to the multi-pcb and all those were good. Even swapped the Qsound module...still no luck.

I am going to swap to another known A board from my working multi, and test....and will update here.
 
Mitsurugi-w said:
Good idea
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K...update....tested multi on different "A" board and punisher and C&D come right up.

Still getting the graphic glitching, and not sure if that's a Sanwa PFX monitor thing, or this multi pcb....will have to test with my original pcb and see if it flickers as well....unles you have anything @Mitsurugi-w

Does the CPS1.5 multi pcb handle any of the video output at all, that could cause that flicker?

EDIT - Also, is there a anazlyzer rom or test rom that yall used to ensure all rams/roms/etc were working, that I could use to scan this A board for a narrowing down of the fault?
 
Is there anyway I can get a new selector please? Screen washed out and select doesn't work.
 

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bagheera369 said:
K...update....tested multi on different "A" board and punisher and C&D come right up.

Still getting the graphic glitching, and not sure if that's a Sanwa PFX monitor thing, or this multi pcb....will have to test with my original pcb and see if it flickers as well....unles you have anything @Mitsurugi-w

Does the CPS1.5 multi pcb handle any of the video output at all, that could cause that flicker?

EDIT - Also, is there a anazlyzer rom or test rom that yall used to ensure all rams/roms/etc were working, that I could use to scan this A board for a narrowing down of the fault?
Click to expand...

Slow response, but I just saw your post.

1) The CPS1.5 Multi PCB doesn't handle any of the video output, but it does talk to the C board which does affect video output. Do you have another C board you can swap in?

2) There is a CPS1 Diagnostic ROM included in the CPS1 Multi Rollup Pack that will test the Main RAM and CPU RAM of the A Board for problems.
 
ShootTheCore said:
Slow response, but I just saw your post.

1) The CPS1.5 Multi PCB doesn't handle any of the video output, but it does talk to the C board which does affect video output. Do you have another C board you can swap in?

2) There is a CPS1 Diagnostic ROM included in the CPS1 Multi Rollup Pack that will test the Main RAM and CPU RAM of the A Board for problems.
Click to expand...

Hey...didn't mean to forget to update this. Thanks for trying to help.

Issue wound up being I didn't swap the GAL chip included with the multi, from the old board, to the new one.

Took taking to Channelmanic for him to look at the two, cause I also missed it when I went step by step through the install instructions.....confirmation bias achieved.

After we swapped the GAL over, it worked right as rain.
 
Remote working now thanks to mitz

But 1 issue maybe

Question is it normal for cnd to give audio without rca plugged in? I dont notice anything different when plugged in or not. Also are these plugged in right?
 

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I figured it out theres a stereo plug and a mono plug on the psu itsself in the front that iv never messed with since i bought it 4 years ago. Everything works now.
 
Does anyone know what type of connector the 2 pin header for 12VDC uses on the Multi? I'm looking to get a 2 to 3 adapter, then use a 3/4 pin hub to distribute 12VDC to 2 fans, Also, I would like to know if there are any safe area on the multi, with the use of Kapton or similar, for the purpose of centralizing the reach of 2 fans located on opposite ends.

Thank You
 
Hello,

First of all , i would like to congratulate all the amazing ppl on this forum who had created these amazing multigame kits: taito f3, cps1/1.5/2/3, mvs, stv ,and all the ppl that had created conversions and mods: cps1/1.5 to cps2 HW, biomechanical toy, etc.. I own a few of these multigame : cps2/3 , taito f3 , and recently i bought a cps1.5 multi.
I have followed the instructions in the .pdf provided and the games are working fine, only those that are running on an original B21 PPU: sf2CE, SF2HF, daimakaimura, pang3, other games play on blank screen (they coin up), or others do not play at all(they do not coin up). Varth plays with some sprites at the beginning, so does cadillacs with the logo - but with wrong colors.
My mobo is 89626A-4, 12Mhz osc, provided PAL replaced, tried 3 C-Board: sf2CE, pang3, and knights of the round, and with recommended DIPSW.Also i have tried putting the flash.img in the root for update- no improvement.The game was pang3 before switching to multi.
I attach pics for clarification. My guess is that the keys are not written in the CPS-B-21, so that some games play blind, and other dont play at all.
I do have electronics knowledge

Any help/instructions/thoughts on this problem ?

Dragos.
IMG20241217141942.jpgIMG20241217141951.jpgIMG20241217142016.jpgIMG20241217142157.jpgIMG20241217142207.jpgIMG20241217142218.jpgIMG20241217142231.jpgIMG20241217142243.jpgIMG20241217142300.jpg
 
mr3xtraball said:
I attach pics for clarification. My guess is that the keys are not written in the CPS-B-21, so that some games play blind, and other dont play at all.
I do have electronics knowledge

Any help/instructions/thoughts on this problem ?
Click to expand...
Your C Board is not the right one. Although it has the B-21, it doesn't allow for key writing. You need a new one.

Check here: https://www.arcade-projects.com/threads/what-donor-board-to-use-for-the-cps1-multi.13106/
Your model is a "GOOD" one, which are: "These "Good" Options will work, however you will be limited to only using "decrypted" ROM sets."
you one of the called "BEST"

I also have some repros left. PM me if interested: https://www.arcade-projects.com/threads/c-boards-reproduction.24614/
 
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