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  • Quote from caius: “Non-volatile RAMs?I don't know, I never tried.It could work, I can do some test. ” I've read the documentation of the DSP and in case of battery power loss (it's an input pin) it resets the keys. That said if you tie it to the +5V rail on the PCB (maybe through a diode or resistor to lower level since there's might also be a voltage check) it might do the trick.

  • Quote from brentradio: “And no one seems to know that this kit has Frogger 2!!!! What the hell, I didn't even know there WAS a Frogger 2. Yes, great kit and cheap too. ” And you still can't play it properly in MAME. Every now and again you're sent back to level 1 (protection kicking in).

  • Quote from Morden: “I just realized an Infinikey type circuit wouldn't really work. While I guess it is possible, technically, according to Apocalypse, the Dallas HEX write takes several minutes, which would be impractical if performed on every boot-up. Is there a way of permanently desuiciding these boards, eliminating the battery? ” Quote from caius: “Quote from Morden: “Is there a way of permanently desuiciding these boards, eliminating the battery? ” Only using patched program code.Some game…

  • @Morden pinout is the same, there should be a dot on the silkscreen indicating pin 1. You can also probe pin 5 to confirm it's ground. And you're correct about the file to load (32kB). [EDIT] Sorry I forgot the bin to hex conversion (see @caius post below). Haven't slept last night...

  • Thanks @caius for finally posting it. I had the privilege to test it on real hardware before the guide was posted and I confirm it works perfectly.

  • @acblunden2 and @brentradio, information is on the silkscreen, U1 = ROM1, etc. But from your pic @acblunden2 it seems you got everything correct.

  • I would say you probably severed a trace or damaged a via while desoldering the old caps and now you have a floating signal somewhere.

  • @AlxUnderBase unfortunately there's no compatible profile for 27C4002 because the morons whose designed it thought it would be great to have to raise Vcc to 6.25V during programming. As far as I know it's the only chip in the 27C range requiring that. In fact very few programmers support it, maybe my Dataman can but not sure I've kept any of those stupid 27C4002s.

  • Pool pin warning means programmer has detected a floating pin. Usually happens if pin isn't inserted properly in the socket or is dirty or the chip has internal damage.

  • Quote from nonosto: “one question any news about Sega's System 16 cpu security modules? ” There is some information in the thread. What we know for sure is: - romsets with encrypted sound CPU won't be supported since there's no known method as of today to restore the keys or even replace the battery - there are 3 different encrypted main CPUs: FD1089A, FD1089B and FD1094. Keys are tied to the CPU type which means each module type can only play romsets meant for it. This also means the V1 using d…

  • Jumped from V7.6 to V8.8 => Still not fixed...

  • Sega PAL dumps

    Apocalypse - - General Arcade Tech Help

    Post

    Quote from xga: “Amazing work, Apocalypse! Thank you for your dedication on all of this. Just checking, should 315-5225 be listed as IC62 and not IC46? I think IC46 might be 315-5227 on the bottom (video board). ” Correct, thanks. Quote from stj: “so how are these dumped? and converted? is there any automated software? ” Using a dumping device I made and then a piece of software I wrote for analysis, reduction and equation reversing.

  • Quote from AlxUnderBase: “i have version Ver8.80 (2018-08-27) ... but i dont have the chip to try ... @Apocalypse , sir ... it's any way to write data on 27c400 chips with top3000 ? ” Can you share that 8.8 version please. For 27C400 select the equivalent MXC4100.

  • Sega PAL dumps

    Apocalypse - - General Arcade Tech Help

    Post

    Quote from psykom1: “If I ever get a hold of a System-Y reasonably, you'll be the first to get a dump.Could I assume to find one on a G-Loc or do I need to locate a proper Galaxy Force board set??? ” I believe the 315-5325 is on all Y boards. But you can't dump it (it's secured) or brute force it in a conventional way (it's a registered device PAL16R4). However if you send me the chip I can reverse it and then test it.

  • Sega PAL dumps

    Apocalypse - - General Arcade Tech Help

    Post

    Quote from psykom1: “Seeing the Y board hardware dumps gives me hope I can one day own a real Galaxy Force. Nice work. ” We now have the full PLD set for OutRun and X board hardware (except the 325-5279 used only on After Burner since on my board it was a 315-5304). On Y board I'm missing the 315-5325, mine is faulty.

  • Sega PAL dumps

    Apocalypse - - General Arcade Tech Help

    Post

    Some chips recompiled in different device type to avoid any hardware mod (even if they were minimal): OutRun hardware: IC26 top board, 315-5223A (CK2605) reversed in a GAL18V10: drive.google.com/open?id=1YoJeV1xzVA6wrd_uMXbNwPAHXc9juOrF X board hardware: IC18, 315-5280 (CK2605) reversed in a GAL16V8: drive.google.com/open?id=1ewW2pxBXgYx4KR2Yj_H_EBHYZdBQLJjr Y board hardware: IC49 top board, 315-5316 (PAL16L8) reversed in a GAL16V8: drive.google.com/open?id=1Lj4ueRWxYQ3KaG4OsAh4zygK1u1jM2W6 IC10…

  • Many thanks. The parts I've received are probably good then.

  • Can anyone of you guys do an IC test with a known good 74LS393 (please indicate your software version too). I've received new ones but they all fail the IC test so two possibilities: 1) there's a bug in the TOP3000 software for that specific IC (I've tested almost all other TTL chips and the test does work) 2) I received fake/faulty parts.

  • Depending of the type of building (wooden beams, concrete slab) and age it can vary greatly. Most armored concrete buildings are rated 250kg/m2 (and this probably includes a huge safety margin). Unless you're stacking your cabs on top of each others you should be good.

  • Quote from nem: “I think I remember reading you can leave most of the jumpers set to a bigger size even if the game doesn't use them. ” Not entirely true, 27C020 EPROMs need their pin 31 tied high. On bigger EPROMs this is signal A18, not sure how M92 behave when not used (stuck low? stuck high?). Anyway I discovered it to be a problem when reversing the 315-5436 custom chip found on "newer" S18 romboards. The chip indeed has its A18 signal stuck high when configured to use smaller ROMs.