Question about the Mystic Color Classic upgrade

[mraroid]

Hi folks....

I have not done the 640 X 480 mod to my Color Classic yet.  I would like to take a 575 logic board I just bought and plug it into my Color Classic.  Can I do that with the screen still at 512×384 ?

jack

 

[360alaska]

Yes, but you will have to run system 8... a 575 board without the vga mod confuses system 7.5 and with show a bus error...

 

[archer174]

I seem to remember just removing a resistor fixes this. I never did the video upgrade to my classic and it boots OS's before 8 just fine.

I think this site details what I'm talking about.

http://www.geocities.jp/hirotac_01/all-of-ccii/fix-id.html

 

[360alaska]

You can remove resisters, but if at some point you want to do the vga mod you'll likely have to put them back...

 

[archer174]

That is true, but it is a 0 ohm, so it's just one solder bridge when you want to do the VGA mod.

 

[Bolle]

There is also the possibility to fix that 7.x bus error in software somehow. I did that on my Mystic but totally forgot what you had to do.

Edit: now that was easy... http://colourclassicfaq.com/mobo/mystic.shtml#Q2.1.3