Recent content by LrdNightmare

  1. Galaxian Part II Bootleg (not in MAME)

    Unfortunately the overview picture of the PCB in that thread has a lot of glare (and some minor focus issues), and the labels on the various ROMs and the color PROM are not readable.

  2. Space Invaders test ROM(s)

    Philip, this means the shifter circuit is completely nonfunctional (no matter what gets written to the shifter with whatever the shift amount is set to, it always reads back as 0x08). Based on the schematics, this could either be a problem with the address decoder leading to the shifter, if the...

  3. WTB - Atari SCOM chip 137526-001

    Do you still have the bad SCOM chip handy? I'm hunting for one for decap/failure analysis. PM me.

  4. [Wanted] Joust 2 Sound Board

    No speech means the CVSD chip at U18, HCI-55536 (sometimes HCI-55564 or HCI-55516, Williams/Midway used whatever Harris CVSD chip was least expensive at any given time as they're all nearly equivalent) may be dead or not receiving data, or one of the analog filter op-amps after said chip in the...

  5. DKJR Speed up chips (original)

    I'm still around, and still interested in pictures of (and dumps of) these roms. LN

  6. DKJR Speed up chips (original)

    Looking forward to seeing these. Do you have any pictures of the rom labels, btw? LN

  7. Bubble Bobble I/O Error - cracked PC030CM

    Unless the schematic is complete (can you link it?) it is no good. I need a schematic which includes the triacs/solenoid drivers for the coin lockouts and the counters, the logic parts, and all the passive components. This needs to be COMPLETE, not a 'band aid fix' like the suggestion of tying...

  8. Bubble Bobble I/O Error - cracked PC030CM

    Superully, do you still have the cracked/broken PC030CM module? I'm interested in a broken module to remove the epoxy and trace out the full internal schematic. LN

  9. Capcom 1942 - Advice sought

    I'm pretty sure Capcom forbade the release of the 1942 schematics to make it harder for people to bootleg the boards. Fortunately for us someone must have, against the rules, photocopied a copy (probably from capcom usa) to help an operator fix a bad board, and the operator or capcom after...

  10. Turbo Sub coming to the next release of MAME

    Scucci: Your friend ran into an unofficial policy which the MAME team appears to USUALLY follow or usually followed: ROM submitters are/were not credited unless they specifically asked to be. This was done to protect the identity of people who did not want to be known to be sharing roms with the...
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