According to the QD6500 manual, the BIOS address jumper position I used is C800h, so I enabled "Adaptor ROM Shadow C800,16K" in the motherboard's BIOS. It didn't make a difference in the HDD speed tests.
I see. Well, if the HDD is the bottleneck it won't make much difference to enable ROM shadowing.
BTW, have you tried using the drivers to see what performance you get with those? That would be the most fair comparison in my opinion.
Also, what kind of CPU do you have in that machine? I believe Aitotat was using a 100 MHz 486 CPU in his testing.
Have you tried the driver? If so, what kind of speed did you get with that?With a QD6580 and XTIDEUB I get about 4MB/s and the 6500 I get around 3.1 MB/s on my 486. Actually a little disappointed.
Have you tried the driver? If so, what kind of speed did you get with that?
Do you have shadowing enabled for the memory range used by the XUB ROM?