I'm still waiting for an answer regarding the motherboard revision number of your P6BAT-A+ and what your alternative motherboard is/was.
I found a product page of your motherboard, it looks like board/Bios/chipset are limited to three modules and 384MB of memory.
http://web.archive.org/web/200302040944 ... _a_v2.html
Maybe a bug in their Bios ?!?
Ecs P6BAT-AP memory problems.
from here
far from being usable but this could be at least a start. there are no hints in the VIA datasheets how to determine which 0x0691 is which :(
Code: Select all
+ case 0x0691: /* VIA VT82C691 - Apollo PRO */
+ /* VIA VT82C693A - Apollo Pro133 (rev 40?) */
+ /* VIA VT82C694X - Apollo Pro133A (rev 8x,Cx)