I have an Atrend ATC-5000 board with a Pentium MMX @ 200MHz, and a 64MB PC100 DIMM.

Whenever it is powered on or rebooted, it makes a long beep as if it's failed and is making the first long beep of a beep code. Then, about 4 seconds later, it makes the normal (quick) Award BIOS memory test beep and boots normally.

Is this just a quirk of the ATC-5000? It looks like others on the board have these. Or, is there something I might have set in the BIOS that it doesn't like and is having to override?

As many codes are video related, the video card is ATI 3D Rage II+, but it works fine.