Date: Thu, 22 Jul 2004 12:12:46 +1000 From: David Elmo <[EMAIL PROTECTED]>
My 1.3 turns the backside cache on and off and can set the cache fine as far as it has appeared to me. Though it is a naughty thought: does it actually do anything besides appear to! (Like the pedestrian light buttons in Sydney are often completely non-functioning, unknown to most folk who go on pressing them. They are automatic, centrally programmed, timed variously).
David Elmo
I think that folks have seen real performance/compatibility differences on some machines between when the feature is enabled/disabled.
However, every machine has a hack to disable the cache in hardware...
On the PTP, simply pull the cache from the slot. Easy.
On the J700 and S900 from Umax, short the two solder holes/pins which comprise jumper 38 (marked J38 on the MB), <http://www.io.com/~trag/S900_MB_Labeled.jpg>. Some of the early run machines actually have a pair of pins at J38 and you can just slide a jumper over them to disable the cache.
On the 9500, original 9600 and Daystar Genesis, remove resistor R31 from the motherboard to disable the soldered down cache.
Jeff Walther
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