Yepp, that seems like an early CD-ROM drive for the consumer market, before ATAPI became the norm.
Some drivers are available at http://ibm-pc.org/drivers/cdrom/PANASONI/panason.html
The three major proprietary pseudo standards of the time were Sony/Philips/Mitsumi, if memory serves.
They all used the common 40pin ribbon cable, as it was used in computing since the ~70s or so.
Some interface cards also allowed for DMA transfer. Our old LU005 single-speed drive came with such a card.
Depending on the driver, it could work in either mode. Some cheap sound card interfaces only did PIO, I believe.
Btw, don't throw away that Trident. It is slow, but perhaps is a supported SVGA chipset in one of your games.
Since the card is based on the 8900 series, or rather a crippled decendant of it, it maybe shares some VGA mode numbers of it.
Last but not least, it is also worth checking if there''s a mode utility. The 8900 series had one.
It could switch to CGA/EGA/Hercules emulation that's built into the silicon.
If you plan to play some older CGA games that aren't speed sensitive, then that's worth checking out.
That emulation mode supports some of the registers of a real CGA, thus can show its alternate palettes and other CRTC effects.
Modern PCI cards lost that ability, since they can only do show other CGA palettes if they are selected via PC BIOS.
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