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220uF/4V connect to Pin 43 of the Bt473PKJ is Vref and GND ... I wanted to desolder the old one and measure it, but that didn't work, so I had to unscrew it. I ordered a new one, but I quickly soldered in a 220uF/25V capacitor in. The malfunction didn't change, though ...! All solder are very...

Yes I think so too, it is a 220u/4V one. All other are Tantal.

The video output is faulty. I'm not sure if it's a hardware or software issue? If I play around with the control panel and change settings, then restart, it suddenly works fine. Then the next time I start it, it malfunctions again. Apple Quadra700 running at 32 MHz and GrandVimage control panel...

I check as good ... - all Data and Control connections to and from the four 74ALS245 - all RAS, CAS and WE connection from the VGT8002-6215 to the 1MB Ram Bank - all Data connection from the 74ALS245 to the CPU - all Address lines connection from the VGT8002-6215 to the Ram chips I couldn't...

The computer has been stored away for a few months. Now it's making a chime of death. I've checked all the connections from the ALS245 to the four RAM sockets and on the other side to the onboard 1MB of RAM, and everything is fine there. All ALS245 are new ones. 74ALS245 all Pins1 -> (R/W) CPU...

No I expand the Zip File onto the Quadra and it do also not have a Resource Fork ...

Can I use this Romdump under MacOS7 ...? Download under OSX (macOS M4 MacMini) and copied via ftp to my Quadra 700 and it can't run because it's broken?

Thanks ... Is there a ready to use binary file from the SlotsGrab Tool? I can not compile it ...! When I have time I read the three links ...

... is there a program that runs under Mac OS to read the ROMs of Nubus cards and save it to a file?

There is a IC10 EEPROM "NM93C46M8" so I was thinking that must be updated to the 21B Version of the card ...?

some Screenshots ... Higher resolutions above 1024x768 are possible and you can also set them but this will result Display Errors on the Monitor. Now I'm wondering if you really need the ROM of an 21B? I think so...

put the Card in my Q700 ...

Install OS8 over a Quadra700 onto the Performa 475 HD (BlueSCSI) and it works but a Update to 8.1 works not when I boot it on the Performa 475. Mactracker say Performa 475 the max OS is 8.1 ...!

I copied the complete os8.1 system from a qudra700 to the Performa 475 and after booting the message appears that the memory (128MB) is not sufficient for the Finder and you have to reboot ...

The 1.4.1b2 control panel is in English and a small part in Japanese. I hope I can change it all to English with ResEdit?

I have a Performa 475 with a full 68040 CPU at 33 MHz and 128 MB of memory. I want to install OS8, but the installer quits with an error message saying it's not possible on this machine. I've tried overclocking the computer to 25 MHz using software and changing the P475/Q605 jumper, but nothing...

The 19B Nubus card has 3MB of Video Ram so that is good for 1152x870 with 16,7M Colors. That 3MB is the max with this card. I think I need the 21B card version ROM for my 19B card but I'm not sure if it's always different for different nubus cards. Do I have to read the AT28C512 directly from...

Flash or EEPROM could be an AT28C512 or AT29C512? The question is how to program it or replace it with a DIL version? The RamDAC can be found on eBay as Bt473KPF110. Most standard RamDAC chips are compatible with each other. The control panel is fortunately in English.

I bought an Interware GrandVimage 24-19B Nubus graphics card for my Quadra 700 on eBay from Japan. The card has 3MB of video memory but only an 80MHz RAMDAC for 1024x768 at 16.7M colors max. Can I modify the card and convert it to a 24-21B by updating the ROM and possibly replacing the RAMDAC...

Are there ECL Monochrom Nubus Cards out there?