homebrew 'puter project (was: 8008?

Just to let you know about it - you might want to check into my CUBIX project. CUBIX is the homegrown operating system that I originally developed for my 6809 Portable machine. It is easily portable, comes up on minimal hardware, and gives you over 100 system calls, and a number of applications including several text editors, assembler, debugger, APL interpreter, 8080 simulator, lots of utlities and plenty more. The original machine it was developed for was a homegrown portable with 6809E CPU, 6845 video controller, parallel keyboard, couple of 6551 uarts and a 765 diskette controller. Details and photos of this machine (and the mainboard) are on my site. I've also built the system as a bus oriented device, and had PCBs made for the main boards (great lab/prototyping system). This is one of the easiest ways to get a fullly functional 6809 system up and running. You can build a CUBIX system on quite a small card, using just a handful of chips. All you really need is the 6809 CPU, some RAM, 8K ROM**, serial port (I like the 6551 for it's built in baud rate generator), and a diskette controller (I usually use a 765). I've wirewrapped systems in just a couple of hours, and I know sevral others who have done it as well. Since the enture CUBIX OS fits in the 8K boot rom, RAM requirements are very low - Also, the internal commands include FORMAT and DOWNLOAD, which lets you format a diskette and download the applications and utilities to it (very easy to bootstrap). There's a 6809 simulator that run CUBIX on my site if you would like to check it out. Also some sample schematics, as well as full source code and documentation for the OS and all related applications/utilities. Regards, Dave -- dave04a (at) Dave Dunfield dunfield (dot) Firmware development services & tools: www.dunfield.com com Collector of vintage computing equipment: http://www.parse.com/~ddunfield/museum/index.html