Hi all I hope your all well, I have a Pro Audio Spectrum 16 that works very well in another PC Slot 1 P3 or P2 500MHz but im having trouble with it in a 486 DX2 66MHz rig ive got running Dos 6.21. First off its a PAS16 FCC ID: iXW-SCSI 1-1 (650-0097-05-D) im not using the included CD drive it came with that uses SCSI instead I have an IDE DVD drive on a I/O controller card that is set to slave, when ever I have this PAS16 card plugged in I cant use the DVD drive to access CDs or DVDs and I cant get as far as to install the dos drivers for the sound card which is on a CD. It comes up with different problems like no media in drive G: or CD-ROM not High Sierra or ISO-9660 format reading drive X. Abort, Retry or Ignore? Or drive volume has nothing but "files exists" when "dir'ed". I have tried different ISA ports and im wondering if there is a way to disable the SCSI port by jumper because even though its not being used I bet its causing problems for the DVD drive but I dont know what the jumpers do for JP3 and JP4 I have some pics below of the card:

http://s836.photobucket.com/user/sierragames/ … 2016%20Spectrum

J4 has 3 pins and j3 has 6 pins does anyone have the jumper settings for this board?

I did some reading and found this:

--Does the PAS-16 work in a 486/50, or, What computers does the PAS-16
work in?
The PAS-16 was designed around the IBM AT specification. It will work
in a 486/50 if the bus (I/O CLK) speed is lowered down to 8MHz. Please
note that this is not the same as the CPU speed. Once it works fine at
8MHz bus speed, you can experiment at higher speeds.

--Do I have to use the PAS-16's SCSI interface to control my CD-ROM
drive which has its own controller?
No. All that you have to do is to make sure that the CD-Audio signals
are routed from the CD-ROM drive to the PAS-16.

--I get the error "CDR 103: CD-ROM not High Sierra or ISO-9660 format
reading drive X. Abort, Retry or Ignore?"
First, check to make sure that you are not trying to read a CD-Audio disk.
Second, this is usually caused by a software conflict. Reduce to the
generic CONFIG.SYS and AUTOEXEC.BAT and try again.

How do I reduce the bus I/O clock speed to 8MHz? I would like to try this for my DVD drive.