The only change I’m aware of for the V2-Z80 board was the need for a 1K pull-up resistor (U26 pin2) on the back of the board. See here:- http://s100computers.com/My%20System%20Pages/Z80%20Board/Z80%20CPU%20Board.htm (near bottom of page). John From: n8vem...@googlegroups.com [mailto:n8vem...@googlegroups.com] On Behalf Of Gary Kaufman Neil - Thanks! - Gary On Tue, Mar 25, 2014 at 1:34 PM, nbreeden <nbre...@me.com> wrote: Update for 3/25 - The last two show-stopper bugs have been fixed. Both of these were actually east to fix once I finally understood them. - The resolution to the issues was very interesting to me; it's anyone's curious I can post info on them. - My testing looks good. - I've already documented the changes to the V1 CPU card required. - I believe the V2 card can be jumpered to allow the same configuration. - The Serial I/O card has had the USB, SCC1 and SCC2 interfaces tested, all three work as the console device. - The Utility Card (MSX2) serial port can also be used as the console. I still need to: - Document the jumper config on my 4MB memory card, the Serial I/O card and the Utility card. - Document how I build the ROM images and a description of the hardware interface ASM files. - Recruit a few alpha users - If you're interested let me know. -Neil -- -- |