C64-C128 CP-M Cartridge Interest
ard at p850ug1.demon.co.uk
Sat Dec 25 12:11:55 CST 2010
> >> Or on the Epson RC20!
> > The Epson TF20 (floppy drive for the HX20, PX4, PX8, etc) contains a Z80
> > and 64K RAM. Oh, and a boot ROM that is mapped out after booting. I have
> > never analyhsed the system disk in detail, but I have a feeling this
> > thing runs CP/M internally.
> The PX-8 is a CP/M system based on Rom and Ram disk with
> hooks for external extension for both greater rom/ram disk or
> the floppy device.
Sure, as is the PX4 (I have both). The HX20, of course is not (it uses a
pair of 6303 microprocessors). But the 5.25" floppy drive appears to run
CP/M (or something close) on its intenral processor. The 3.5 drive, BTW,
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