Dragon 32 Sound Extension Module

From The Dragon Archive

The Dragon 32 Sound Extension Module is a cartridge by J.C.B. (Microsystems), that contains a General Instruments AY-3-8910 sound chip (Also found on Amstrad CPC, Spectrum 128, +2 and +3, MSX, Atari ST and other machines).

This allows the Dragon to play interesting sound effects and complex chiptunes without taking all processor time.

The cartridge also adds two 8-bit I/O ports (provided also by the AY-3-8910).

The sound chip can be operated via the new commands in BASIC provided in the cartridge ROM, or via the 0xFEFE and 0xFEFF addresses.

It was sold for £34.95.

Pictures

Screenshot

Dragon32 SoundExtensionModule ROM Message.png

IC Parts Lists

IC list (with Datasheets)

Part Number Description Datasheet
2732 4Kb EPROM (pdf)
AY-3-8910 Programmable Sound Generator (pdf)
SN74LS04N Hex inverters (pdf)
SN74LS08N Quadruple 2-Input Positive-AND Gates (pdf)
SN74LS27 Triple 3-Input NOR Gate (pdf)
SN74LS30 8-input Positive NAND Gate (pdf)
SN74LS138 Decoder/ Demultiplexer (pdf)

Manuals

  • Version 1
  • Version 2

Downloads