First time poster...
MAN!!! What a forum...
Wealth of info here....on to the problem....
We have a Plex 24/10/40A at work running on a Tyan Thunder2500 motherboard. It has a wierd chipset (Serverworks..aka Reliance) and has problems with IDE/DMA mode. For this reason I got an old Promise Ultra66 card I had and installed it. I turned off all the motherboard IDE ports and cabled the cdroms as follows:
Ultra66-IDE1 to Plex 24/10/40A
Ultra66-IDE2 to Acer 52MAX CDRom
I then create a Disc image to take the source cdrom out of the picture. I have tried Nero and CDMate, but all I can seem to achieve without underruns is 16X. I am using a disc with about 680MB of plain data. On 24X I get about 60 underruns, 20X about 30, and on occasion I will get 1 or 2 with it running 16X
I took the CDR's home and they ran 24X fine on my TDK VeloCD.
I am running F/w 1.03..
all help appreciated ....thx
ps. when I run task manager and check the CPU utilization, I am hitting about 65% in the middle of writing at 16X...is that right???