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  1. ack

    IREM BomberMan World no audio diagnostics help request. YM2151?

    So it appears I have the same board and sound PAL as you. My sound rom (ic33 / 27c512) dumps to crc b8d8108c, which matches up with bbm2-sp-b.ic33 from bbmanwja mame romset. If I double up this rom and write it to a 27c1001 it works fine. If I try to do the same with bbm2-sp.ic33 from bbmanw...
  2. ack

    IREM BomberMan World no audio diagnostics help request. YM2151?

    I was mess with this a bit this weekend. Can you tell me what romset you used and what eprom types did you use for the sound roms? 27c1001?
  3. ack

    InfiniKey-CPS2

    I'm in need of some too (Kabuki). It looks like his "last seen" on the forum was Dec 3, 2021. Hopefully everthing is ok with him.
  4. ack

    IREM BomberMan World no audio diagnostics help request. YM2151?

    IRQ / pin 2 is an output of the YM2151. But I would agree the issue would be upstream from the YM2151 if you've confirmed its a known working chip. The YM2151 generating the interrupts is dependent on the z80/sound program setting up one of the timers on the YM2151. Can you tell me what eprom...
  5. ack

    IREM BomberMan World no audio diagnostics help request. YM2151?

    Hi This is what I hear on mine for audio probe for music YM2151 pin 21 YM3014 pins 2, 4, 8 JRC A2004B pins 1-3 and 5-7 Volume POT pin nearest the amp Some other things to check The YM2151 is what creates the music, but other sounds (PCM) will be coming from the rom at IC30. You should try...
  6. ack

    IREM BomberMan World no audio diagnostics help request. YM2151?

    I do this same thing on ddragon boards when testing. You can hear the music on pin 21 with an audio probe if the ym2151 is working. I'm just seeing this thread. I have a bomberman world I can probe around on to verify what chips/pins you should be able to hear sound on the audio probe.
  7. ack

    InfiniKey-Kabuki

    I would be interested, one is better then none. Did you by chance try the hold down p1 start, then power on the board to see if it fixes your issue?
  8. ack

    InfiniKey-Kabuki

    I curious of availability of getting some of these (or being able to build them)? They seem to be out of stock everywhere. I'm looking to get/make around 10 of them.
  9. ack

    [SOLD] Super Buster Bros. (NOT WORKING/DEAD)

    Try holding down player 1 start then powering on the board and see if that fixes your issue. I de-suicided a board but was still getting a black screen until I did that. There is a comment about it at the top of the mame mitchell.cpp driver. If that doesn't fix the issue I would be interested...
  10. ack

    Sound Issues on MV1-FT

    Its unlikely the issue is the z80 itself. The z80 handles all sound, so the fact you are getting some sound means the cpu isnt dead. Your symptoms sound like either an issue with the communication between the main cpu and z80 or it could be the YM2610. My usual test for ym2610 is to listen to...
  11. ack

    MV4 top board issues, only slot 1 works

    You are mostly there finding the issue. As you have identified in the pics D2 is stuck high on slots 2/3 and probably 4. The 16 data lines from the program rom for each slot go to the 2x245s to the left of each slots (slot4 is R3&R4, slot3 is L3&L4, etc). They go in pins 2-9 and come out...
  12. ack

    MVS 2 Slot No Sound

    https://wiki.neogeodev.org/index.php?title=MVS_cartridge_pinout It will be the SDA and SDD pins. This may also be useful https://github.com/jwestfall69/neogeo-diag-bios/blob/master/docs/slot_pins_inserts.md
  13. ack

    MV2F losing sound if 2nd slot is accessed

    Some more info, this is mostly from a post I made a week ago on another forum where someone add a similar issue. When the board initially boots, the z80 will be running the code from the sm1 rom that is on mv2f board. When the diag bios goes to enable the diag m1 in a specific slot, it will...
  14. ack

    MV2F losing sound if 2nd slot is accessed

    I assume you get the diag cart jingle in slot 1 but not slot 2? That would be an indication you probably have a broken trace going to slot 2's SDA/SDD lines. https://wiki.neogeodev.org/index.php?title=MVS_cartridge_pinout
  15. ack

    Electrocoin 6 Slot Restore

    Nice job on the restore!
  16. ack

    Unibios for SVC Chaos PCB Version first try

    I got a couple 29F200 today and your suggestion works as expected, thanks. I tied 43/44 via the 10k to pin 33 (BYTE) which the board already connects to Vcc to force 16 bit data mode. I used cat uni-bios.rom sp1-u4.bin > bios.bin and can confirm that dip3 lets you switch between them.
  17. ack

    Repo MVS Cart PCB Discussion

    I double checked, you are right. Pin 1 on top 245 is GND and bottom is VCC
  18. ack

    Repo MVS Cart PCB Discussion

    HC14 (right) ----------- PIN 01 <=> PIN A55 Edge Top (SDRMPX), also goes to a cap(?) right below it with the other side being ground PIN 02 <=> PIN 03 on HC14 (same ic), PIN 11 on LS374's #7 and #8 PIN 03 <=> PIN 02 on HC14 (same ic), PIN 11 on LS374's #7 and #8 PIN 04 <=> PIN 11 on LS374's #5...
  19. ack

    Repo MVS Cart PCB Discussion

    I just realized there are 2x HC14s on the board after looking at your picture again. Its super hard to read a couple of the labels on my langsquenet board and thought there was only one of them. In the trace for the LS161 and HC14 above, the HC14 referenced it always the left one. I've...
  20. ack

    Repo MVS Cart PCB Discussion

    Yeah I think you are right, here is a pic
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