GLINKUSB-LT - User Port RS232 to USB for Commodore 8-bit Computers

Project Status: 
work in progress

glinkusbGLINKUSB-LT is a modern variation of the Commodore VIC-1011. Instead of providing a legacy 12V RS232 connection, it provides a USB Virtual Com Port (VCP) suitable for direct connection to any modern PC. The adapter is fully supported by the standard Commodore BASIC at up to 2400 baud. Jumpers allow the card to be configured as a UP9600 for 9600 baud operation in Novaterm and Striketerm. A reset button is also provided for added convenience.

This is a minor revision of the GLINKUSB-LT-C01. The only addition is a extra header that provides a convenient 5V to power a SD2IEC or other external device.
The ubiquitous FTDI FT230X chip is used as a RS232 to USB bridge. The FT230X is programmed to detect VBUS and to drive a TX and RX LED. Jumper blocks J3, J4 and J5 enable UP9600 functionality.

glink232glink232

Jumper Configuration

Jumper VIC-1011 UP9600
J3 - 1-2
J4 - 1-2
J5 - 1-2
Design Files
Schematics: 
Filed under: