flashx20 - Floppy and screen for the Epson HX-20

[Norbert Kehrer]

>/On Sat, Dec 15, 2018 at 5:47 PM Norbert Kehrer via cctalk />/<cctalk at classiccmp.org 
<http://www.classiccmp.org/mailman/listinfo/cctalk>> wrote: />>/With that, you get a big screen (the PC monitor) and disk space for />>/programs and data on the PC's hard disk, which can then also be used for />>/data and program exchange. /
On Sun, 16 Dec 2018, Jason T via cctalk wrote:
>/This is great - thank you for writing it! I have at least one HX-20. />/IIRC it was used for Motorola radio programming and had custom ROMS. />/Do you know what other Epson portables (if any) used the same protocol? /
On Sun, 16 Dec 2018, Fred Cisin via cctalk wrote:
>The Epson HC-20 probably did.
>It was essentially the same machine, in silver-grey, instead of beige, 
>with both English and katakana keyboard and character generator ROMs.

I have not tested it, but I suppose, that also the PX-8 and PX-4 used the protocol,
because the protocol specification defines the following device numbers:
- HX-20: 0x20 (probably also used for the HC-20)
- PX-8:  0x22
- PX-4:  0x23