Originally Posted by '98-ESer
In the industrial controls world, it's very common to tightly bind computer code to the controller hardware. In this instance, the specific combination of SSE2/3 and 512 Kb on-chip cache is what we need. There are some nasty timing loops that depend on the chip throughput as well, this is what eliminates a slower (but loads more available) Northwood core.
Intel typically sells its cpu variants into the industrial markets for a minimum of 10 years. 'fer instance they only just now dropped the 80286/87 chips and matching memory management chips from their industrial catalog.
The premature death of the SL7EY CPU caught a lot of the industry by surprise. My firm has a side contract to rework the code base and move it to a PPC7xx base, but we need to recreate a development and simulated production environment on both platforms for QA.
Are you certain the chipset will not supoort a 533 or 800MHz FSB CPU?
What chipset is it? My best guess would be an i845, many of these support 533 FSB. Of all the industrial boards I have seen, the i845 is almost always the chipset used.
Barring that, there's always EBAY!
Unfortunately, I have nothing to offer, all I have in stock for S478 is a lousy Celeron 2.7, yuck!
let me do some checking...... I'll try to dig one up, I have to buy used parts all the time for little old ladies that are just so emotionally attached to their old PCs that they won't upgrade. That might explain the stack of Slot 1 boards in the corner!
EDIT: The damn timing loops will also prevent you from using the faster 533 bus chips, regardless of mainboard support. Curses!