Now, on ANOTHER front, no promises, and it's in discussion, but I'm trying to get the creator of
this amazing device to make it support the Epson PX-8, as a TF-20 emulation, NOT PF-10, which will make it PX-8 and HX-20 compatible. No worries, they use same protocol, and basically same storage capacity!
If you DON'T know, it is meant as a replacement for the aging Tandy Portable Disk Drive and Drive 2. It plugs right into the serial port on the M100/M102/NEC 8201a, and is seen as a PDD, and it uses an SD card which can be written/read on a standard WinTel PC. As you can see now, TF-20 or PX-8 emu makes absolutely no difference, as I think the PF-10 was created to be a mini-version of QX-10 / TF-20 5.25" disks (40 tracks, 16 sectors, 256bytes per sector)
Cool stuff.
I am going to get a PX-8 ready for him (all batteries rebuilt, etc..) and send it to him in China to develop with. Should be super cool! Especially if it can ALL be integrated in the same firmware, with maybe a switch of some sort, or protocol autodetection!
Dude has skillz - and if you're an M100/M102/NEC buff, check out Stephen Adolph's amazing stuff, especially the ReMem at:
ReMem and Rex info. This is SUPER cool. It is an add-on that replaces onboard ROM+RAM, and actually creates 8 "Virtual Model 100's".
Yes, virtual. Think "VMWare" and you're close. 8 separate machines running, with their own ram+rom, each doing their own thing.
I think Rex is a huge RAM add-on for the trapdoor socket, which will hold multiples of the option ROM's.
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