This is part 2 of my journey, building my own custom board for C64 peripherals for MiSTer.
If you haven't read part 1, you can do so here Part 1
Today my boards from PCBWay arrived, so straight to the workbench to put it together.
The
board I had made actually has two functions the IEC bus and a keyboard
interface for a C128 keyboard that I use for my MiSTer.
The new board makes a pretty big difference, here are my previous prototypes that I had hanging off my MiSTer.
What I used to have
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| My original custom IEC bus for my custom C64 core |
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| The new IEC Bus for the official core |
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| A C128 Keyboard to USB interface |
What I have now!
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| IEC on the Left - C128 Keyboard interface on the Right |
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| Giving it a test run before unplugging my MiSTer |
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| The MiSTer stack and my new board looking neat |
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| From the back with the IO port |
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| All plugged in and working |
Make your own?
I know my requirements are pretty niche, but if you want one you can get one
from PCBWay
You'll also need these parts:
- Logic Level Converter
- 6 Pin Din Connector
- USB 3 Connector
- Arduino Micro
- Switch ( to reset Micro )
- D-Sub Connector ( for c128 keyboard )
Programming the Arduino
I found a great piece of Arduino code for C64 keyboard on the Internet.
I've hacked it to suit my needs and to drive a C128 Keyboards extra keys.
You can get my hacked version of the code from Git Hub.
A special note:
Once you upload the code it is really hard to re-program the Micro with the keyboard code again.
Simply upload the blink example code first ( that comes with the Arduino IDE ) THEN reload the
keyboard code.
PCB and Schematics
I have released the board schematics and design here.
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