Help! Looking for a LCD monitor that is MACIIci compatible — #21

Post #21 by IIsi

Source Forum	68kMLA
Category	Hardware
Post Date	Mon, 6 Oct 2008 - 18:18
Original URL	https://68kmla.org/bb/threads/help-looking-for-a-lcd-monitor-that-is-maciici-compatible.13981/

Post

Anyone - is there a way to get the IIci to use more memory for video or is this a hardware limitation?

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I believe that it is a hardware/firmware limitation. However, it wouldn't be a good idea for performance reasons. Using system RAM as VRAM means that system RAM gets a hammering every time that the screen content changes, slowing down any application that shares that RAM bank. Use the IIci built-in video for ad hoc use, but install a NuBus video card if you are going to use it a lot.

I am fairly certain that the RBV chip is hard coded to use a fixed amount of ram. The Apple Developer Docs for the IIsi/IIci have this information in them, in the Video timing or Architecture section, iirc.