Color Classic VRAM Upgrade Question

[crazyegg]

Hi All,

I recently purchased a Mac Colour Classic. Everything tests fine but I would like to expand the VRAM from the current 256K that is soldered on the mobo. Currently there is no VRAM in the VRAM upgrade slot.

Will the CC boot up and run properly if I put in a 512K VRAM module in this slot? FYI, I know that the maximum recognizable VRAM for the CC is only 512K (including whats soldered on the mobo).

Regards,

ed..

 

[LCGuy]

Theoretically, if its anything like the LCIII, it should. My LCIII has 512k of VRAM onboard, and can take an extra 256k, a few years ago I ran it with a 512k VRAM SIMM, and although it only recognised 768k total, it worked just fine.

 

[crazyegg]

Hi,

Thanks for the reply. The reason why I asked this question is because I am planning for the future should I want to upgrade the mobo to a LC 575 which can support the 512K VRAM SIMM.

PS: I paid $86US for my bare and plain CC from eBay. I noticed that average prices are generally around $150 or so for a complete setup. Have prices come down that much from say 5 years ago???

Regards,

ed...

 

[crazyegg]

Hi All,

Sadly, the 512K VRAM does not work properly on my CC. When it boots up, I get white scan lines on the lower half of the screen.

The CC recognizes the extra VRAM as I can now go into the control panel to change the number of colours to "thousands". However, this does now remove the white scan lines.

I tried this with 2 separate VRAM modules and had the same negative result.

Regards,

ed...

 

[beachycove]

The fact that both vram modules had this effect is an indication that you are right. However, there are several machines (e.g., Quadra 950) that will only recognize 256k vram modules will accept 512k modules, but only use 256k of them.

It would be worth installing the modules at least a couple of times, as I have seen poorly seated vram cause garbled effects. Some machines seem pickier than others about how memory is seated, so you just need to indulge them sometimes.