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Looking for the Apple Macintosh Quadra 650 Schematics ...

Thanks ... The plug I can buy from Ebay "molex 15-24-7100" ... It would be nice I could buy something ready-made build up.

Has anyone got one of these fully assembled and for sale in the EU?

Looking for a power supply connector (EU) from the motherboard, for example, on an IIsi, Q700, or Q650? I'd like to build a test power supply. Or what other connectors can I use?

I have a Miro Prisma II Plus, but I can't get it to work. I'm certain it's faulty. My NEC MultiSync 1970NX monitor supports sync-on-green, but I'm not getting any image. The graphics card should work with this monitor. I installed a composite sync to H/V sync converter on the graphics card, and...

My guess is that because of the 88 MHz crystal oscillator and the MC10H124P Motorola chip, it is a monochrome graphics card for controlling an ECL monitor?

The card is faulty.

@Bolle ... did you modify your adapter by adding Sync on Green via a transistor? My NEC monitor supports SoG, but it doesn't display a picture and indicates it's not receiving any signal, so I suspect my card doesn't have SoG. I can see the card's desktop in the monitor control panel.

I tried connecting the C/H sync as Hsync and the Vsync directly from the GPU pin A6 as Vsync. Of course, it doesn't work. Can't you tell the GPU to only output Hsync instead of outputting C/H sync via pin C6? I think there's an Atari VME bus graphics card with the same chip, and that works with...

V Sync (GPU-A6) -> 74F241 Pin8 (IN) C/H Sync GPU-C6) -> VGA socket Pin4 ... a LM1881N is the only way?

I think the NEC Multisync supported sync on green but the Display say "no signal". I also use a ijyama or a Miro Display.

There is a LM1881N to convert C Sync to H Sync and V Sync ...

Pin4 = 5V Pin5 = 0V Pin9 = 0V ... have I connect Pin4 ?

GPU Pinout ...

I try it and make a Adapter ... 1 - RED 2 - GREEN 3 - Blue 4 - 5 - 6 - GND 7 - GND 8 - GND 9 - ... I test two Monitor a NEC MultiSync LCD1970NX and a MIRO LCD Model 568 but I don't get a picture via the MIRO graphics card. It do not work without any sync I think?

I'm a little confused. I don't want to modify the card like the instructions suggest. What would be the right VGA adapter without any modification? 1 - Red 2 - Green 3 - Blue 4 - n.c 5 - H sync 6 - GND 7 - GND 8 - GND 9 - V Sync

I plugged the card into my Quadra 700, and the occupied Nubus slot doesn't appear in TattleTech. Now I have to measure the card's 9-pin VGA connector first ... With so few pins on the 9-pin connector, surely there's no way to detect whether a monitor is connected to the card or not? VGA...

Looking for some divers to the "BMAC PRII 001" Graphiccard. It has a INMOS IMSG300G-10C Transputer GPU Chip on it and 1MB of VRAM. The EPROM Sticker say "PRISMA II v3.1" ... There are some sites with MIRO driver on the Web but these are wrong for this card. I can not find something ...

If I desolder the flash chip to read it and then reprogram it, I need either an adapter board to which I can solder the flash or a chip adapter. I could then populate the 32-pin DIL socket and use a flash chip in the DIL instead of the TSOP.

In addition to the 64k Flash, there's also an EEPROM on the card, a NM93C46M8. The first step would be to backup the original ROM from the 64k Flash in case something goes wrong. I don't know if that's possible, but I'm populating the 32-pin DIL socket and soldering an adapter to my programmer...