Nabu Expansion Board

[codeman]

I made this board for the Nabu PC and it adds SD card Realtime Clock and another serial port.
Right now working on a FDC emulator for it.
Check my youtube channel for videos of it My Youtube also have some blank pcb's .

 

[MicroCoreLabs]

Cool project. I wonder if the SD bit-banging could be ported to the Teensy 4.1 and run in parallel with the Z80 CPU and local bus emulation.

 

[jpenner64]

I made this board for the Nabu PC and it adds SD card Realtime Clock and another serial port.
Right now working on a FDC emulator for it.
Check my youtube channel for videos of it My Youtube also have some blank pcb's .
View attachment 1250239

Excellent...would like to know more about what you have done here....Is there consideration for sharing approach, PIC/NABU code, etc...I have only seen your schematic for which I can reproduce the hardware, but challenged by PIC/NABU coding to interface between the PIC and NABU bus.