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Downloads

Various technical documents

 

80-103A 300 baud modem manual w/schematics

Microcoupler schematic

Micromodem II schematic

Page 1 and page 2 Micromodem 100 schematic

Original 1982 (2 PC boards) Smartmodem 1200 firmware EPROM source code

1984 version 2 (single PC board) Smartmodem 1200 firmware EPROM source code

1984 version 2 (single PC board) Smartmodem 1200 hardware schematics (.pdf)

Hayes Chronograph user manual (.pdf)

Hayes Chronograph Schematic (.pdf)

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