Doesn't work, since the ports are for hard disks only and don't support ATAPI. Tekram made cache controllers with dedicated CD-ROM ports on it (which would be the DC680CD in your case). If it has no third IDE port labeled "CD-ROM", you need to use the IDE port on a sound card instead.

OK.
I'll use an old panasonic drive on my CT1740 🙁

jammaster wrote:

OK.
I'll use an old panasonic drive on my CT1740 🙁

That Panasonic drive is NOT IDE. Do not connect it to an IDE interface if you want to ruin your Panasonic / Matsushita CDROM.

That CT-1740 has a Panasonic interface. It is NOT IDE. That is why it uses the proprietary Matsushita CDROM.

For the Matsushita CDROM drive you need MKECD.SYS driver in DOS
For the regular IDE CDROM I would try VIDE-CDD.SYS driver in DOS

jammaster wrote:

I have a Tekram DC680C that work with my old WD Caviar IDE disk. But, i have troubles when pluggin a CDROM on the second IDE cha […]
Show full quote

I have a Tekram DC680C that work with my old WD Caviar IDE disk.
But, i have troubles when pluggin a CDROM on the second IDE channel.
The card recognizes the HDD during the post/DRAM test.
the CDROM plugged make this procedure slower.
nothing with a Win98 boot diskette with cdrom support.
I have tried to ENABLE my second basic controller in parrallel just for having a pure IDE canal not cached for my CDROM. (this controller was disable for not disturbing the tekram...only for having serial ports and //).
the two cards in // do'nt wrok properly 🙁
So ... how can i have my CDROM working with my DC680C ?

On another note I submitted docs and the driver disk for that series if needed. Mine was under the Precision Instruments name.

http://minuszerodegrees.net/manuals.htm#Preci … ion_Instruments