IV17 VFD Board

https://github.com/nsafran1217/VFD-IV-17

This board now has a permanent home in my Nixie/VFD Weather clock

I finally built a case for this board, though I still don't have a permanent use for it. I 3d printed a case that let me fit the 2 power supplies and connectors in one place.

I wrote a few assembly routines to use the display with my z80 computer. It uses the z80-pio to talk to it. 

The assembly is in the files called "iv17*.s" in my GitHub repo for my computer:
https://github.com/nsafran1217/z80-asm/tree/master/myCode/DeviceDemos

As a part of this, I also wrote a simple clock program with an RTCDS3231 connected to the z80-pio. I bit-banged the i2c.
If anyone is looking for examples of i2c bit banging on the z80, look at i2c.s and RTCDS3231bitBang.s. clock-iv17.s puts it all together into one program.