Monday, October 28, 2013

Friday, October 4, 2013

Blkdog7 pays a visit

John Jacobsen (aka blkdog7) stopped by for some parts the other day and we fired up the PPClone for a sec to show the status.

Skip over to 1h 18m 02s to see the clip.

Thursday, August 15, 2013

Test Screen Hurdle Success!

Finally got through that test screen hurdle. A lot of 06xx and 5xxx custom stuff to figure out. In the end I decided it was worth the time to just work though the disassembled Z80 and document everything. I figured out about 80% of it all. It was actually pretty fun.. I haven't had to do so assembly since college.  ;)

That allowed me to pinpoint exactly where I was running into trouble.

Then I ran into some Z8002 instructions my core didn't support yet so I put in a simple workaround until I can get that stuff implemented.

I also wrote up an arcade video to LCD interface so I can work on the design without needing that arcade monitor.

Long story short... I'd say we're making some headway:

Wednesday, April 24, 2013

Crazy characters

Just a quick status. Lots going on these days with work, board repair, and now a new job prospect. Crrrrrazy!

Barely had time to shoot this video: