kasbert / iecgw

Gateway to Commodore 64 IEC port

iecgw

Gateway to Commodore IEC world

• No fastloaders
• Somewhat unreliable
• Limited support for 1541 dos functions
• Simple pi1541 hardware
• OragePi Zero with Armbian. Might work with others, too
• No Raspberry Pi Zero. Needs multicore.
• Realtime-ish setup in user space, with a dedicated cpu
• Full linux networking and services
• Easyish python server code

IEC code copied from SD2IEC https://www.sd2iec.de/
Hardware is like Pi1541 https://cbm-pi1541.firebaseapp.com/
Some ideas from uno2iec https://github.com/Larswad/uno2iec
Python d64 code from https://eden.mose.org.uk/gitweb/?p=python-d64.git;a=summary

Socket Protocol

All socket messages consists of 3-257 bytes

• 1 byte command
• 1 byte secondary/device
• 1 bytes data length
• 0-255 bytes data

IEC ->

• I Initialize. Expects response
• P Dos command. Same as Open.
• O Open
• C Close
• R Read. Expects response
• W Write
• D Debug
• : Status response from host command

-> IEC

• I Initialize response for Initialize. secondary/device is the device number to be used
• : Error status for Read
• B Bytes response for Read
• E Bytes response for Read with end of file
• o Host open command, filename parameter, expects response
• c Host close command, expects response
• t Host send talk command (load file from device)
• d Host data command (save file to device)

Compile and use

cd src
make
sudo ./iecgw &

cd ..
sudo pip3 install d64
./fileserver.py
./printserver.py

TODO

• Add leds
• Add 1541/sd2iec dos commands
• Host mode