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Re: Zilog eZ80 bits and pieces [message #5849 is a reply to message #5846]

Sun, 20 January 2019 06:28

etchedpixels
Messages: 333
Registered: October 2015

Senior Member

I looked a while back and found very little. There are a few but most of them if not all seem to die. When the CPU was interesting Zilog went to great trouble to shoot themselves in the feet. Want to use it, sure you'll need our compiler $$$, and development board $$$, and a connecting cable $$$ and only ours works. At that point I think most hobby and CP/M fans told them to see figure 1.

ez80sbc seems to have https://www.crowdsupply.com/cp-maker/makerlisp-machine as an upcoming project, but even the newer fun looking ones like Zikzak died.

For compilers you don't actually need a lot to use it in 8/16bit mode. 24bit mode is just... weird because nobody today does 24bit computing let alone 24 bits as 3 8 bit bytes. Philipp was talking about adding eZ80 16bit mode at least to SDCC and seems to think it wouldn't been too hard to generate good code and get a modern compiler supporting it. His ask at the time (and I think still pending) is that someone does the work to add it to the assembler and ideally the emulator (so it can run regression tests etc).

https://sourceforge.net/p/sdcc/mailman/message/36422314/

Similar problem with the rabbit CPU R2k/R3k/R3kA boards - although the rabbit libraries at least mostly got open sourced.

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[Message index]

		Zilog eZ80 bits and pieces By: agn453 on Sat, 19 January 2019 18:48
		Re: Zilog eZ80 bits and pieces By: just4fun on Sun, 20 January 2019 00:42
		Re: Zilog eZ80 bits and pieces By: etchedpixels on Sun, 20 January 2019 06:28
		Re: Zilog eZ80 bits and pieces By: mikemac on Sun, 20 January 2019 07:56
		Re: Zilog eZ80 bits and pieces By: etchedpixels on Sun, 20 January 2019 15:45
		Re: Zilog eZ80 bits and pieces By: just4fun on Mon, 21 January 2019 03:35
		Re: Zilog eZ80 bits and pieces By: tor on Tue, 22 January 2019 01:38
		Re: Zilog eZ80 bits and pieces By: agn453 on Tue, 22 January 2019 13:29
		Re: Zilog eZ80 bits and pieces By: agn453 on Tue, 22 January 2019 13:40
		Re: Zilog eZ80 bits and pieces By: agn453 on Tue, 22 January 2019 13:53
		Re: Zilog eZ80 bits and pieces By: agn453 on Wed, 23 January 2019 14:25
		Re: Zilog eZ80 bits and pieces By: lowen on Wed, 29 January 2020 14:19
		Re: Zilog eZ80 bits and pieces By: wsm on Wed, 29 January 2020 16:06
		Re: Zilog eZ80 bits and pieces By: agn453 on Wed, 29 January 2020 18:07
		Re: Zilog eZ80 bits and pieces By: lowen on Wed, 29 January 2020 18:48
		Re: Zilog eZ80 bits and pieces By: agn453 on Wed, 29 January 2020 19:39

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