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Home Forums 68kMLA SuperMac Spectrum/24 Project — #5
Post #5 by Trash80toHP_Mini
Source Forum68kMLA
CategoryTroubleshooting
Post DateMon, 9 Jul 2012 - 18:27
Original URLhttps://68kmla.org/bb/threads/supermac-spectrum-24-project.25793/
Post
I'm going to try to explain the project again. Our cards have socketed 64MHz crystals so they work with the SuperMac Hi-Res RGB Monitor at its Fixed Resolution at a 24bit Color Depth.

From the Manual, it appears that this card shipped with three Crystal Cans, 64MHz, 30.24MHz for use at 640x480x24bit with the Apple FixedRes RGB Monitors and a 24MHz Crystal for use it with MultiScan Monitors.

6MB of VRAM is insanely cool for a card of this vintage, it's on there to support extended desktops for CAD etc. Now that we've got HDTV LCD Monitors with insanely cool wide screen pixel counts, this card is coming into its own again.

Set the timings for whatever you want while you're in standard mode and switch to the custom timing settings and the card tells you what value crystal you need to install to get it up and running!

mp.ls