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PAS16 disables DVD Drive in 486

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First post, by GabrielKnight123

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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.

Reply 1 of 5, by skitters

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I think this is your card, and it shows jumper settings for J3 and J4.
http://arvutimuuseum.ee/th99/i/M-O/53365.htm
No mention of disabling the SCSI interface though.

Reply 2 of 5, by Jo22

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Hmm. I never "disabled" the PAS16' SCSI controller.
Is there a jumper for that Trantor controller chip even ?

PAS16 settings were fully software-selectable, I recall.
Except for the Board ID and DMA jumpers.

What we need to have is to check the manual..

Here's also a big thread about PAS16, maybe it helps, too:

Media Vision Pro Audio Spectrum and Pro Audio Spectrum 16?

"Time, it seems, doesn't flow. For some it's fast, for some it's slow.
In what to one race is no time at all, another race can rise and fall..." - The Minstrel

//My video channel//

Reply 3 of 5, by Jo22

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Update. Found a PAS16 manual. It's not my old one, though.
This one talks amout LMSI, whatever that means. 😕

Anyway, maybe it is somehow useful..

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Last edited by Jo22 on 2018-06-17, 03:26. Edited 1 time in total.

"Time, it seems, doesn't flow. For some it's fast, for some it's slow.
In what to one race is no time at all, another race can rise and fall..." - The Minstrel

//My video channel//

Reply 4 of 5, by Jo22

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Here's the rest of it. I hope I had selected all the relevant stuff related to SCSI configuration.
The last photo also shows an overview about the PAS16 resources..

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"Time, it seems, doesn't flow. For some it's fast, for some it's slow.
In what to one race is no time at all, another race can rise and fall..." - The Minstrel

//My video channel//

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