SS-30 USB Serial Board – Retro Computing

As are most of our designs, this board was meant to address something that we wanted a better solution to. RS-232 interfaces with DB-9 connectors always need a USB-to-RS-232 converter for use with any laptop and most desktops at this point, so having a pure USB serial interface got rid of some messy cabling on our systems.
This board is fully software compatible with the original SWTPC MP-S board as well as our SS-30 Serial Board. It uses an MC68B50 ACIA just like the other two boards, so software can’t detect any difference between this board and a more traditional serial board.

Features

• Fully software compatible with more traditional serial boards.
• On-board baud rate generator provides 1200, 2400, 4800 and 9600 baud.
• Uses an FTDI USB/serial chip. Supported by all major OSes (Windows, OS X, Linux).
• Connection to your computer is via a USB B connector.
• CTS can be hard-wired or taken from the serial port.
• Jumper for NMI or IRQ interrupts (not normally used).