Ha we're still around. I still use my Tatung TC01 as a Z80 dev platform almost daily- probably the finest Z80 dev machine ever made - but enough oozing - I'm a total newbie to the site -I'm pretty familiar with my machine which is close but not quite up to the MSX spec.
it has a quirky ROM which is paged in and out of the first 16k of RAM
as required. There is 64k RAM total.
Graphics are colour on a TMS9129 with 32/40 col modes. There is a kludged 80 column mono card using the same chipset as the beeb.
On start up the Einey tries to boot the first 2 sectors off any disk you shove in it and drops into a ROM driven z80 monitor if you don't put a disk in. It runs a true z80 CP/M 2.2 clone Xtal Dos with a 52k tpa. It used 3 inch Floppy disks but mine is modded to use 3.5 720k as are most machines still in use.
Can anyone help a complete newb with how to go about porting for this machine please?

Phil