I'm far away from home (and far away from +The Western Design Center, Inc.
by the way) and my L-Star (1) project stopped working, the Propeller on the circuit board isn't responding.
Though I happen to be in a location close to +Parallax Incorporated
, I didn't want to wait to get new hardware delivered to work on the project, so I went to Fry's Electronics in Sacramento this afternoon and bought a Propeller Education Kit (2) which is basically a breadboard, a Propeller, some parts, some wires and a great book by +Andy Lindsay
I built the L-Star project on the breadboard and got the Apple-1 emulator clock to work in an hour or so (including wiring up the Propeller). My first 6502 computer on a breadboard and I really can't make the circuit any simpler than this (at least not unless I emulate the 6502 in an FPGA or something)
Next task: make an OSI Superboard emulator run on it. Extra handicap: no video output available for now. But even though the 6502 on the OSI had direct access to video memory and I have code that I wrote for Vince Briel's superboard project, to emulate the video and keyboard, it should also be possible to make it work with only a serial port, judging from Grant Searle's UK101 page (3). Challenge accepted :)
Until I get that to work, here are some wire pr0n pictures...