Internal a1200 IDE interface

[alexh]

It's PIO0 (programmed IO mode 0) and so the speed is proportional to the speed of your CPU and your memory. Plus the optimisation of your hardware driver & filesystem. Maybe a little bit the speed of the drive but doubtful.

Cosmos recently re-worked the scsi.device driver to include lots of optimisations.

http://eab.abime.net/showthread.php?t=57419

SFS or PFS file systems both offer significant speed increases over standard FFS.

http://strohmayer.org/

So patch your scsi.device, upgrade to SFS (both free) and you'll see significant speed increase. (2x?)

[alexh]

The scsi.device is a bit of a misnomer, most likely named by CBM as at that time IDE was not popular and scsi was used by CBM instead...

IDE drives appear as "scsi" in Win7 even today.