unity Posted June 5, 2019 Report Share Posted June 5, 2019 (edited) Pretty sure this bugger is a video card. The port seems odd though (serial port?). Back side says "MoDam SE030 REV C MEMORY PLUS. Thoughts? Its a lot like this card, but not the same: Edited June 5, 2019 by unity Quote Link to post Share on other sites
pcamen Posted June 5, 2019 Report Share Posted June 5, 2019 That 9-pin connector is the same as the Full Page Display cards. Quote Link to post Share on other sites
Trash80toHP_Mini Posted June 6, 2019 Report Share Posted June 6, 2019 MIRROR was a Display Vendor, so that's indubitably another proprietary DE-9 interface for a dedicated display. TattleTech/SlotInfo the DeclROM card info for the model and then check the magazine archives for Monitor Comparison articles, Reviews and Mirror Adverts for more info. D41264C-12 is Fast Page VRAM. "MoDam" is likely a product code? given the platform designation a RevLev. "Memory Plus" was likely the distributor of the CRT/Card combo.? Has that ASIC been sanded? Quote Link to post Share on other sites
mg.man Posted January 6 Report Share Posted January 6 Resurrecting this, since I recently picked up a Maxell-bombed SE/30 with this exact same card... Interestingly, the ROM on mine has a label with "Spark Monochrome". @unity did you ever get it working? Anyone know anything about Spark" Quote Link to post Share on other sites
mg.man Posted January 6 Report Share Posted January 6 (edited) Just spotted one difference... mine has a 50Mhz oscillator... otherwise it's identical to the OP's picture. Edited January 6 by mg.man Quote Link to post Share on other sites
apm Posted January 10 Report Share Posted January 10 Funny, just saw a similar card (for SE) in another thread. I bet the sanded-off chip is an XC2018 CPLD, which was used in loads of 1-bit video cards, like this one that @stepleton and I reverse-engineered: https://github.com/apmcpherson/VideoMacPacHack Do you have the ability to dump the ROM? I'd be curious about its contents. Quote Link to post Share on other sites
aeberbach Posted January 10 Report Share Posted January 10 Interesting - I bet that's for the many CGA or Amiga-style monitors around at the time, if it isn't a proprietary connector for their own monitors. It could be a mirrored display solution - a CPLD with a ROM for configuration, some RAM for a buffer and connection to the PDS slot can easily grab writes to the onboard video memory and output that video in another format. It could also be a 1-bit 640x480 display card. Four memory chips gives it 64k 16-bit words. If the jumpers (JP1, JP2, soldered) follow Asante's scheme that's set for Slot A. If that is a slot identification it is more likely a separate display card. Quote Link to post Share on other sites
mg.man Posted January 10 Report Share Posted January 10 2 hours ago, apm said: Do you have the ability to dump the ROM? I'd be curious about its contents. Should be able to... give me a couple of days... I have a day job, sadly... I'll also post a pic of my actual card. Quote Link to post Share on other sites
Trash80toHP_Mini Posted January 10 Report Share Posted January 10 Have you got a working SE/30 or IIsi for testing? Just install it in the PDS, boot and run TattleTech to find specs of the card in the NuBus/PDS report. Quote Link to post Share on other sites
mg.man Posted January 11 Report Share Posted January 11 (edited) 12 hours ago, Trash80toHP_Mini said: Have you got a working SE/30 or IIsi for testing? Not at the moment... I'm mid-restore of an SE/30... the one this card came in had terminal battery damage. I *might* have one I can borrow... stay tuned... Edited January 11 by mg.man Quote Link to post Share on other sites
mg.man Posted January 11 Report Share Posted January 11 Here are pics of my card... ...as you can see, apart from the 50Mhz crystal, very similar to the OP's ... BTW, does anyone know if it's at all possible to drive a modern (TFT, etc.) monitor with one of these? Quote Link to post Share on other sites
apm Posted January 11 Report Share Posted January 11 13 hours ago, mg.man said: BTW, does anyone know if it's at all possible to drive a modern (TFT, etc.) monitor with one of these? It depends on the resolution. If it's at least VGA resolution (which it certainly is) and not a portrait display resolution, then you should be able to hook up a standard monitor. If the output is 1-bit TTL, you can make a simple resistor ladder divider to get down to the right level and impedance. If it's a portrait display card, it'll look quite bad on an ordinary display. There usually isn't any easy way to set the width of the picture as narrow as it would need to be. Quote Link to post Share on other sites
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