Tim Holyoake

New from me: A Pico MZ-700 ?

https://z80.timholyoake.uk/a-pico-mz-700/

#RetroComputing #Sharp #MZ700 #Z80 #PicoMZ700

Oct 21 at 4:27pmWeb
Show threadLFA 🇮🇨Oct 21
@psychotimmy Nice to see you're at it 🙂
Show threadTim HolyoakeOct 22
@lfa It's always making a start that I find difficult, so getting the colour mapping sorted out feels significant. The MZ-80A implemented banked memory for the monitor ROM as it could be swapped out for extra RAM, but the way it's done on the MZ700 is entirely different, of course!!
Show threadLFA 🇮🇨Oct 23
@psychotimmy If it was done the same way there will be no fun 😉
Show threadTim HolyoakeOct 23
@lfa but of course! Currently trundling through implementing the keyboard matrix which is also entirely different to both the 80K and 80A ;)
Show threadLFA 🇮🇨Oct 23
@psychotimmy Someone at Sharp was not happy reusing things 😆
Show threadLouis van DompselaarOct 22
@psychotimmy I was following your efforts for the 80 in the hope you’d make the jump to these machines. I had the 731 (swapped shortly after for an 821, with QD). I used to program machine code directly in that monitor and still know a lot of Z80 opcodes in hex because of that. I only recently donated the MZ-821 to a computer museum. I must have had that for over 35 years.
Show threadgmcOct 22
@psychotimmy @lvdompselaar Same here :) I had the 721. Oh, the hours I spent in that monitor. I don't have that original 721 anymore, but did get a 731 recently. Contemplating on ways to get that plotter going again, those pens are probably hard to get by nowadays.