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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: spudje on February 14, 2016, 09:01:30 PM

Title: Cybervision 64 32bit issues
Post by: spudje on February 14, 2016, 09:01:30 PM

I have following setup:

Amiga 3000D, Buster 11, CS MK2 060, FastATA (latest version, don't remember exact numbers) & Cybervision 64 4MB with jumper JP1 open.

Picasso drivers show me 8bit, 16bit & 32bit modes. 8bit & 16bit work fine. 32bit gives following behaviours: https://www.youtube.com/watch?v=ZJUkVfVA4FI. Cybergraphx 4 has similar behaviour.
Always the right half of the screens shows weird stuff.

I have already made sure the memory chips are fully seated in their sockets. Are these 32bit modes not supported or is something wrong with my card?

Title: Re: Cybervision 64 32bit issues
Post by: mechy on February 15, 2016, 06:59:57 PM

this card was never intended to do 32bit modes that i know of, if it did it would so slow it would unuseable.  check the specs here:

http://amiga.resource.cx/exp/cybervision64

1024x768x24bit is likely the highest useable mode with tradeoff on speed and screensize.
1280x1024x16 might be useable.

Title: Re: Cybervision 64 32bit issues
Post by: spudje on February 15, 2016, 08:09:43 PM

OK, that's what I started to think already. But how come I can create 8bit, 16bit & 32 bit "A" modes with the Picasso96 tool, but no 24 bit mode, which is supposed to be supported? I guess it's me. But I cannot find any how to guide for dummies like me :)

Title: Re: Cybervision 64 32bit issues
Post by: Marcin1982 on February 15, 2016, 09:34:27 PM

Quote from: spudje;804070

OK, that's what I started to think already. But how come I can create 8bit, 16bit & 32 bit "A" modes with the Picasso96 tool, but no 24 bit mode, which is supposed to be supported? I guess it's me. But I cannot find any how to guide for dummies like me :)

dont worry my CV64 also dont work with 32 bit :-) same like your ,
16 bit is ok

Title: Re: Cybervision 64 32bit issues
Post by: Oldsmobile_Mike on February 16, 2016, 12:06:39 AM

Quote from: spudje;804070

I guess it's me. But I cannot find any how to guide for dummies like me :)

This might help:

https://www.youtube.com/watch?v=n8lLfEuVI2Y

Title: Re: Cybervision 64 32bit issues
Post by: QuikSanz on February 16, 2016, 01:04:03 AM

Looks like Big Book has a typo

In the text it says
" It has a pixel clock of 135Mhz (8bit), 80Mhz (16bit) and 50Mhz (24bit) "

But below on screenmodes it says

" 1024 x 768  32Bit    75Hz
800 x 600    32Bit     75Hz "