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Single Expansion
I/O Expansion
Company
The Puzzle Factory, USA
Date
1990
Amiga
A500, A1000, A2000
a public domain hardware hackers project, designed by Jeff Lavin
sold as a kit - either the PCBs only, or all components
consists of a main board and one or two serial I/O boards connected by 20 pin ribbon cables
the main board plugs into the CIA B socket with a 40 pin ribbon cable, the CIA chip is moved onto the board
does not work with the A3000
serial interface
one or two Rockwell 65C52 ACIA chips
each serial I/O board holds two DB25 serial connectors
newser.device supports 15 standard baud rates from 50 to 38400 bps, plus the MIDI rate, 31250 bps
full hardware handshaking
up to four units may be open at one time, although a 68000 processor may not be able to keep up with all four units running above 2400 bps
parallel interface
one or two Rockwell 65C22 VIA chips
up to four parallel ports driven by eightbit.device
the type of the connectors depend on the user, either DB25 or Centronics can be attached
Photos
Main board, front side
Serial board, front side
Driver / Installation Disk
IOBoard.lha
Aminet
building instructions, schematics
newser.device v2.10
349 kB
newser221.lha
Aminet
newser.device v2.21
28 kB