Commstar v21/23 modem

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The modem and interface

A package that consists of an Amstrad modem by Pace and the PACE serial interface.

  • Advert (ACU, January 1987)

  • Pace modem front.jpg
  • Pace modem back.jpg
  • Pace modem user guide.jpg
  • Pace modem plugged in.jpg
  • Pace RS232 Serial Interface.jpg
  • Pace RS232 Serial Interface inside.jpg
  • Pace RS232 Serial Interface User Guide.jpg

Pace RS232 Serial Interface with Extra ROM Board

This is a different version of the RS232 shown above, featuring the Serial Interface, but with a separate ROM board below.

This could be modified with 2 pins and a capacitor to work as a x4 ROM box. Pic.4 below shows the modified board.

  • Pace-rs232-above.jpg
  • Pace-rs232-side.jpg
  • Pace-rs232-lower.jpg
  • Pace-rs232-modified-romboar.jpg
  • Pace-interface-bottom.jpg
  • Pace-romboard-bottom.jpg


Commstar Manual (EN)

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