Gluino: Arduino Shields on RC2014

[Alan Cox]

This is another of the toys I've been working on. This one still needs a bit more work. I had the I2C attached to the wrong pins on the Shield side, and I need to add the Arduino ICSP connector as a lot of shields use that extensively. It's also only a small mod away from allowing you to stick an Arduino proper on the underside of the board if built with pass through pins so you can make an Arduino sandwich that fits into an RC2014 slots (even if it occupies several depthwise).

The PIO side is a Z80PIO (as it can do per bit direction). The i2c side is a PCF8584 and still needs further debug - for one I had SDA/SCL on the wrong Arduino pins. The D0/D1 lines of the Arduino can be jumpered to the PIO or to the RX/TX lines on the RC2014 bus.

The basics work however, and it's currently providing an SD card under Fuzix.

Alan

[Tom Szolyga]

Very Interesting!  Would you provide a sketch (pun intended) of the circuit to show interconnections?

Thanks,

Tom

[Alan Cox]

I've posted the kicad files to Hackaday. Schematic hopefully attached in PDF below

[TonyD]

Great board. I've got a few Arduino shields I could reuse in my next build.

Tony

[Richard Lewis]

That's pretty cool. I've thought about something similar. At the moment I'm still down the FPGA rabbit hole playing with various Z80 setups of both Intel and Xilinx boards. Would be interesting to setup an arduino type environment centered around a Zilog based as opposed to Atmel or ARM. 

[TonyD]

Hi Richard

I remember seeing a Z80 system with the Arduino board footprint a few years ago. It was not an add-on shield which I've also seen (see below) but was the main board. I can't remember if the Arduino software environment was ported across. If I can find the link I'll post it.

In the meantime, the Arduino Mega RetroShield project looks interesting.

http://www.8bitforce.com/projects/retroshield/

Tony