RETIRED: This product has been retired as it can now be purchased from the Pick'n'Mix range. SC103 is also available as a complete kit.

This PCB houses a Z80 Parallel Input/Output (PIO) device (Z84C20xxPEG) and is designed for use with the RC2014 retro computer.

The PIO provides two 8-bit I/O ports, each with handshake data transfer control. All these signals are connected to a single in-line header at the top of the PCB and a dual in-line header at the back of the PCB.

The top header pins are well suited to linking to prototypes with Dupont cables, while the back header allows connection of a ribbon cable.

The module provides support for Z80 mode 2 interrupts, with the IEI and IEO signals available on a two pin header for linking with flying cables. These signals can also be optionally connected to the RC2014 bus with jumpers.

Address selection is by DIP switch, allowing the module to be located on any 4-byte I/O address boundary. The tight and flexible address decoding means many of these modules can be fitted to a single RC2014 computer.

Features

• Tight address decoding
• Address selection via DIP switch
• Port A and B signals easily accessible for prototyping
• Port A and B signals available for ribbon cable to external project
• Interrupt daisy chain signals can be jumpered to bus or use flying leads

Documentation

This product has a user guide (PDF), which includes component sourcing and assembly instructions. This can be found in the documentation link below. PCB design files can be found at EasyEDA.com, where you can download Gerber files and order boards.

Notes

• This product is supplied as a PCB only. Components shown in the photographs must be sourced separately.
• It is your responsibility to pay any import duty or taxes charged by your home country.
• My products are made in accordance with the "designed for RC2014" labelling scheme.
• RC2014 is a trademark of RFC2795 Ltd.
• This product is designed for hobby use and is not suitable for industrial, commercial or safety critical applications.