I used DRI's MAC80 and Microsoft's M80 for most of my Z80 programming. Later I got the SLR180 assembler, which was the fastest and most versatile Z80 assembler.? I used it to write a lot of code for the Heath H19 terminal (which was Z80-based).
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Josh used the ASMX 2.0 assembler from Herb Johnson's website as-is. It also works for me as-is, but I haven't tried to recompile it.
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> ...a different approach so that the Z80MC teamed with a portable terminal> emulation (not A PC) to make a portable system with enough performance> to assemble CP/M itself.
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I've actually designed a Z80 terminal to pair with the Z80MC; but haven't gotten around to laying out the PCB yet. I wrote new firmware for the Heath H19 terminal that included quite a few features, and would like to re-use that code. Unanswered questions are a) what do to for a keyboard, and b) what to use for a screen.
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For the keyboard, I don't want to use expensive modern switches or the keyboard alone will be big and cost over $100. So I'm thinking of something more like the Radio Shack model 100 keyboard, which had full size type-able keys but was fairly small and portable.
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The screen will probably have to be LCD, as nothing else exists any more. But so many of them are "one-time wonders" that are available today, but not tomorrow.
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Lee
--
Excellence does not require perfection. -- Henry James
Lee Hart