More info on Radius Videovision

[marmotta]

Hi! I have this card (nubus) with memory expansion and studio board. I searched on web but i not able to find some spec... how many vram have the board? If I watch the chips on board is 4mb! But macbench show me only 512kb...  :-(

I use the board with fixed frequency monitor apple 16. At 832x624 I can select only 256 colors... is normal?

What is needed the studio upgrade board?

 

[Byrd]

Hi marmotta,

I'd look at the card as an unaccelerated Nubus capture card, not as a video card which as you've discovered has limitations with resolution and colour depth (although I do recall the one I had had some sort of expansion card and did display millions of colours).  As I didn't have the breakout box on mine I sold it.

 

[marmotta]

Hi marmotta,

I'd look at the card as an unaccelerated Nubus capture card, not as a video card which as you've discovered has limitations with resolution and colour depth (although I do recall the one I had had some sort of expansion card and did display millions of colours).  As I didn't have the breakout box on mine I sold it.

But the card only work if you use your video board, with onboard or another nubus card the video capture not work. I think is needed two monitors for best use...

 

[Trash80toHP_Mini]

That's the case, the VidCap output/stream goes on the card's display. You need a NuBus VidCard or built in video running a display for the Mac side of things. NuBus lacked the bandwidth to display Video from a capture card. PCI fixed that in later VidCap hardware generations.

http://radius.vintagebox.de/RadiusQA/VideoVision.html

 

[marmotta]

At the end, Is it normal for videovision not to go beyond 256 colors on apple 16 monitor?

 

[marmotta]

At the end, Is it normal for videovision not to go beyond 256 colors on apple 16 monitor?

The answer is: yes....

 

[Nathan_A]

When used as a "Macintosh interface" card does it offer any useful features? Like QuickDraw acceleration? Does anybody know what, if any, other Radius graphics solution that section of the VideoVision is derived from?

 

[Unknown_K]

Nope. If you need a second video card look elsewhere.

 

[jeremywork]

Not the most useful but not useless either. I used mine to drive a display at 640x480/Millions and it does accept slave block transfers from cards with acceleration, even the 8•24 GC.