I got a Shuttle HOT-419 motherboard and I want to use my Am586 133 on it. The Am586 is on a Trinity upgrade card with a voltage regulator so voltage isn't an issue. I have the motherboard jumpered for 33MHz and 2x FSB. (The jumper settings that I found worked were the 486DX4 settings.) The motherboard has 256K of cache and 64MB of EDO RAM. I have a VLB video card and a VLB I/O card.

The problem is that the CPU is running *extremely* slowly. DOSBENCH's speed tests say I'm running slower than a 486SX. What should I be looking at in terms of figuring out why it's doing that? The timings in the BIOS are set normally and it's set for Fast system speed so it's not running in slow mode.