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Old 03 June 2019, 13:54   #2
AmigaHope
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Join Date: Sep 2006
Location: New Sandusky
Posts: 474
Nope, nothing like this was ever released to the best of my knowledge, unless you count some SCSI tape drives that have (transparent) hardware compression built in, or modems that did transparent compression on the data stream, but in both those cases the computer would never actually see the data in compressed form.

I suppose you could count WarpOS/PowerUp compression libraries that used the PPC as a coprocessor for 68k software.

As far as lossy compression goes there were a fair number of video compression cards like the DPS PAR, VLab Motion, and Newtek Flyer. Most of these cards had their own drive controllers on them to avoid using the Zorro bus, but you could still transfer around the compressed video files usually. These generally did realtime MJPEG encoding/decoding, but the Flyer used its own proprietary wavelet-based codec called VTASC. These cards were all built around the uncompressed data being decoded/encoded to/from their own video framebuffers, as the Z2 Bus was way too slow for uncompressed video, but you could probably use the VLab Motion as a generic JPEG coprocessor with some creative coding (though it was never used that way to my knowledge).

The Rembrandt video card supported hardware JPEG encoding, apparently.

EDIT: Also the KCS Dual HD floppy drive had a microcontroller in it that apparently included some sort of hardware compression (and a built-in low-level diskcopy routine!), but this still mostly falls under the transparent compression realm like with tape drives, etc -- but I guess you could write out a compressed floppy and then flip it to dumb-drive mode and read back the compressed image for storage elsewhere, but the format was undocumented so it wouldn't really serve any general-use purpose.

Last edited by AmigaHope; 03 June 2019 at 14:24.
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