This card houses a Z80 serial I/O (SIO/2) device (Z84C42xxPEG) and a Z80 counter/timer (CTC) device (Z84C30xxPEG), designed for use with the Z50Bus.

The CTC provides four counter/timer channels. Channel 0 is used to control the baud rate of serial port A. Channel 1 is used to control the baud rate of serial port B. Channels 2 and 3 typically provide a periodic timer tick.

The module provides support for Z80 mode 2 interrupts.

Device address options: SIO = 0x80 to 0x83, CTC = 0x88 to 0x8B, or SIO = 0x84 to 0x87, CTC = 0x8C to 0x8F

Features

• Two serial ports
• Four counter/timer channels
• Tight address decoding
• Easy access to input and output signals on header pins or bus pins
• Interrupt daisy chain support with look-ahead

Documentation

The documentation can be found at www.smallcomputercentral.com

Related items

• SC511 - Printed circuit board on its own
• Components, spares, and accessories

Notes

• This product is supplied as a kit of parts that require assembly.
• It is your responsibility to pay any import duty or taxes charged by your home country.
• This design is made with the permission of LiNC (designers of the Z50Bus).
• This product is designed for hobby use and is not suitable for industrial, commercial, or safety-critical applications.

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