Has anyone tried an experiment to see if 64MB is a true, hard limit, or just the maximum that Apple supported? In more than a few instances, the published ram ceiling simply reflects the testing that Apple did before releasing the model, and the mac is actually capable of supporting much more ram.Thing is though, he's already maxed out the RAM...64 is as high as you can go in a 6200.
For those of such an inclination, there are a few tests and some thoughts here, but nothing will be as conclusive as giving it a try for oneself. The reported tests relate to 68K Macs, but the data will have some resonances for early PPC Macs.... Has anyone tried an experiment to see if 64MB is a true, hard limit, or just the maximum that Apple supported?.. .
A 5x00 board will fit straight in without modification, provided that, for a 5400 or 5500 board, you have a 3.3v regulator set up. 6400/6500 boards require, not only a 3.3v regulator, but also the rear backplane to be changed over to the one thats already on the Mac, or else the board won't physically fit in the bay and connect to the connector inside the case.If it's possible, the best speed-boost for a 52/6200-series machine would be to swap in a 53/6300-series motherboard, or higher (preferably a 6500/300, at least a 6400/180). You'd want to make 100% sure that a replacement board would fit in the 6200's case before you order one, though.
Otherwise, max'd RAM, Speed Doubler, and System 7.6 is about the best that little 6200 can do speed-wise.
That same Valkyrie video controller is the thing that lets it run Marathon on the full screen with a good framerate, something no other Mac of comparable spec can do.The only real complaint I have, other than the Valkyrie video controller (which is complete rubbish)
But on a 6400, it's probably smarter to disable the 630 acceleration as the PowerPC 603e chip can easily handle any quality settings Marathon 1 throws at it.FisherD : In the Demo and the real version of Marathon, there is an
option to accelerate the game for a Quadra 630. I've got a
630... what kind of acceleration does it provide, and how
do you do it?
Do you use the new video buffer chip?
BungieCorp : the quadra 630 and similar models have double-
buffered video hardware, and support hardware pixel-
doubling. the demo supports these modes, and lets you run
in 16bit low-res faster than 8bit low-res on an 840AV.
pretty cool. unfortunately this didn't work in the release
version and is being fixed. the patch will be released soon.
yes, we use the valkyrie chip.
FisherD : uh... English please?
BungieCorp : in english "the Quadra 630 rules if you write
directly to it's video hardware).