BBC Master 128

While still basically the same design as the other models, the Master 128 had a number of differences including more memory and a newer central processor. Unfortunately, the changes introduced some compatibility problems with existing software.

Title image
Manufacturer Acorn
Processor 65C102
Speed (MHz) 2
RAM (KB) 128
RAM expandable to (KB) (unknown)
ROM (KB) 128
Sound 3 channels plus noise
Keyboard type Typewriter-style
Number of keys 74
Dimensions (mm) (unknown)x(unknown)x(unknown)
Weight (g) (unknown)
  • 8 bit parallel port
  • 8 bit I/O port
  • RS423 serial interface (5 pin "diamond" DIN)
  • Cassette interface (7 pin DIN)
  • Composite video output (BNC)
  • RF interface
  • 4 12 bit analogue input channels