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Radius PrecisionColor 8 ROM 2.0

Posted by: jmacz on 2023-06-17 17:04:00

Anyone have a working image of the v2 ROM for a Radius PrecisionColor 8?

I found this one on the forum but it's not working for me after writing to a 27C256 EEPROM (verified it as well after write):

Help for a nubus Radius PrecisionColor Pro 24X ROM/firmware upgrade

Hi friends! I want to upgrade my nubus Radius video card to a newer rom version (now 1.50). I need compatibility with Mac OS 9.1. I remember in the nineties, Radius distributed these kinds of updates... Anybody of you have an application utility that can help me for the upgrade? Thank you all...

68kmla.org

My card has the 1.0 ROM and it works but for whatever reason, I'm unable to see a 1024x768 option when connecting it to a VGA LCD that supports 1024x768 at both 60/75Hz (Dell E153Pc). I see 1152x864 (which the LCD can't drive) and 640x480 works. I have a 10switch VGA to DB15 adapter and have tried pretty much all the combinations... Mode 1 (composite sync), Mode 2 (composite sync), Mode 3 (sync on v), Mode 4 (sync on h), and Mode 6 (sync on green) all don't work with the DELL. Mode 5 (separate sync) seems to work but when I use the switch combinations for various resolutions on mode 5, I'm only seeing 640x480 and 1152x864. So wanted to try a newer ROM.

Any help appreciated.

Posted by: Phipli on 2023-06-17 17:09:11

Do you mean PrecisionColor 8xj? Do you have a photo of your card?

Its my rip, I only made it a few weeks back. The card works fine.

What chip did you use to write it to?

Posted by: jmacz on 2023-06-17 17:17:54

The card is a Radius PrecisionColor 8... don't see an XJ on the label. Wrote it to a 27C256 70ns EEPROM. Here's some pictures.

Posted by: jmacz on 2023-06-17 20:15:21

Sounds like there might be a PrecisionColor 8 (which I have) and a PrecisionColor 8-XJ. Although I can't find anything regarding the 8 except for a few pictures here (which match the card I have):

Radius PrecisionColor 8 - Higher Intellect Vintage Wiki

wiki.preterhuman.net

Everything online seems to be about the 8-XJ.

Posted by: jmacz on 2023-06-17 23:43:22

Ok yeah, they are two different cards. The standard 8 (non XJ) seems to be an 8 bit card that only supports 640x480 and 1152x870. Couldn’t find anything else online. Not sure if it’s accelerated or not. That explains why the ROM didn’t work.

Posted by: Phipli on 2023-06-18 02:07:44

Ok yeah, they are two different cards. The standard 8 (non XJ) seems to be an 8 bit card that only supports 640x480 and 1152x870. Couldn’t find anything else online. Not sure if it’s accelerated or not. That explains why the ROM didn’t work.

Yeah, you have an older card with more in common with the PrecisionColor 8-24 than the later 7" cards.