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The YAZ180 is a modern single board computer, built on the tradition rich Z8S180 CPU and the AMD Am9511A-1 APU.

It is my attempt to create a perfect mix of “ancient” and modern computing technology. Specifically, it is an attempt to marry CPU/APU technology from 40 years ago, with modern I2C, USB, and WiFi capabilities, and make an powerful 8-bit computer that can either be embedded into an application, or operate as a stand-alone computer (with some accessories). It won't suit everyone, but it does exactly what I want.

The YAZ180 is supported by the z88dk and it is designed to work with both traditional CP/M v2.2 applications and modern z88dk C compiled programs. The YAZ180 is fully open source. All documentation and design is available from [[https://github.com/feilipu/yaz180|this repository]].

{{https://www.retrobrewcomputers.org/lib/exe/fetch.php?w=800&h=548&tok=10b445&media=https%3A%2F%2Fraw.githubusercontent.com%2Ffeilipu%2Fyaz180%2Fmaster%2Fdocs%2FYAZ180v24_left.JPG?800x548|YAZ180 v2.4 2019}}

There is a build diary, that contains dated information (i.e. potentially incorrect) in two posts.

The [[https://feilipu.me/2016/05/23/another-z80-project/|first post]] on what I was thinking about building, and some specification decisions.

The [[https://feilipu.me/2017/02/26/yet-another-z180-v2/|second post on outcomes]], and what remains to be done.

Following these two posts I moved most of the documentation effort to github, and now it is all available there.

The [[https://github.com/feilipu/yaz180|concept]] and current status.

The [[https://github.com/feilipu/yaz180/tree/master/pcb|PCB]] versions designed in Eagle 6.6, of which v2.4 is the current release.

The [[https://github.com/feilipu/yaz180/tree/master/cupl|CUPL]] glue logic, supporting flexible memory mapping, and single step hardware with a break-point.

The [[https://github.com/feilipu/yaz180/tree/master/yabios|bios]] implementation, supporting far calls with RST jumps (supported by z88dk), and supporting FATFS IDE drives.

The [[https://github.com/feilipu/yaz180/tree/master/cpm22|CP/M v2.2]] implementation, which uses a FATFS formatted IDE drive.

So, is it finished?

Well, yes. The hardware is pretty much finished. Software projects are ongoing.

The [[https://github.com/feilipu/yaz180/tree/master/z180tool|perl script for ICP]] of the Flash is unfinished, because I stopped needing it.

The [[https://github.com/feilipu/yaz180/tree/master/mpm21|MP/M]] implementation is unfinished, because I got distracted.

The [[https://github.com/EtchedPixels/FUZIX/tree/master/Kernel/platform-yaz180|FUZIX support]] is unfinished, because I've not had time.

Enjoy.