Quadra 605 and Quadra 700, VRAM Questions.

[uniserver]

Ok the Quadra 605,

I installed x2 512k VRAM sticks, and it still will not allow me a resolution past 800x600, however it does allow millions of colors now.

from lem:

video: 512 KB VRAM, expandable to 1 MB (remove both 256K VRAM SIMMs, plug in 512K replacements; supports 512 x 384, 640 x 480, 640 x 870, 832 x 624, 1024 x 768, and 1152 x 870 resolutions. We have a field report of an 800 x 600 option as well.

i wonder if its because of the settings on my VGA to DB15 adaptor, i doubt it however because in its current setting, my 7500 will display 1152x870

the only time i have to mess with the adaptor is when i plug in the IIsi, i have to change it from only #5 being on, to only #1 being on, for 640x480.

also with the Quadra 700 i installed the 2 (256k) simms from the q605, so the q700 should have a total of 1mb ram now.

Its pretty much the same thing will not allow me to go past 800x600,

The quadra 700 has 8 vram slots, I know they have to be installed as pairs, just wondering where i guess, Near the system ram or in the middle.

i guess maybe i should play with my stupid VGA to DB15 adaptor, now that i am thinking of it.

http://www.ralentz.com/old/mac/hardware/dale-adams/video-quad700-900.html

 

[beachycove]

Lem is right about the 605, though at the higher resolutions you'll not get millions. I think 256 to be more likely. You'll not notice the difference anyway in early System 7s.

 

[8bitbubsy]

Yes, this is because of the VGA adapter settings (or pinout if it doesn't have DIP switches).

"VGA mode" is 640x480 60Hz and 800x600 56Hz.

 

[MacClassic10]

Where can I can get two 512k vram sticks, I'd like to do the same with my Quadra 605? Thanks. :beige:

 

[Juror22]

This is where I obtained the ones that I got for my Q605 and they work fine. Shipping was higher than I would have liked, but they did package things well.

http://www.welovemacs.com/apple-memory-pre-g3-powermacs-powermac-8100-mac-512k-video-ram-simm.html

You could also post in the Trading Post area (if you haven't already)

 

[MacClassic10]

Thanks, I ended up snatching some up on eBay though.