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RC2014 USB UART

Using supplied UART

[   43.140568] usb 3-2: new full-speed USB device number 4 using xhci_hcd
[   43.281499] usb 3-2: New USB device found, idVendor=3171, idProduct=0034, bcdDevice= 2.10
[   43.281508] usb 3-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[   43.281510] usb 3-2: Product: USB to UART Adaptor (5v)
[   43.281513] usb 3-2: Manufacturer: 8086 Consultancy
[   43.281514] usb 3-2: SerialNumber: 0948
[   43.287686] user.info: Apr 20 13:37:03 mtp-probe: checking bus 3, device 4: "/sys/devices/pci0000:00/0000:00:14.0/usb3/3-2"
[   43.287966] user.info: Apr 20 13:37:03 mtp-probe: bus: 3, device: 4 was not an MTP device
[   43.302148] cdc_acm 3-2:1.0: ttyACM0: USB ACM device
[   43.302175] usbcore: registered new interface driver cdc_acm
[   43.302177] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters
[   43.302361] usbhid 3-2:1.2: couldn't find an input interrupt endpoint
[   43.302404] usbcore: registered new interface driver usbhid
[   43.302407] usbhid: USB HID core driver

Module: cdc_acm (not available on Alpine/PostmarketOS)

Pins on I/O board:

  1. GND
  2. !CTS
  3. 5V
  4. TX
  5. RX
  6. !RTS

Connect: sudo tio /dev/ttyACM0

Consider adding your user to dialout group for sudo-less access: sudo usermod -aG dialout $USER.

Sending files with A:DOWNLOAD.COM

Use delay on sending data with tio /dev/ttyACM0 -o 1 (if it gets stuck try higher number than 1, but upload take more time).

The btc program can be compiled to create encoded data for upload: https://github.com/RC2014Z80/RC2014/tree/master/CPM/File%20Uploader.

Paste it's output to the terminal. It will start A:DOWNLOAD <file name> command and rest of the data will be interpreted by it. If all goes well it prints OK.

There is also UPLOAD.COM program that can be sent to the device to encode local files the same way: https://github.com/RC2014Z80/RC2014/tree/master/CPM/UPLOAD.COM.

The UPLOAD.PKG file is already encoded so you can just paste it to the terminal.

Sending longer files

Use tio to boot and navigate to target drive.

Then use CTRL-T followed by Q to quit tio.

Pipe btc output to tio:

btc <file> | tio /dev/ttyACM0 -o 1

 

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