Technical specifications

Amstrad GX4000 PCB.
  • CPU: 8/16-bit Zilog Z80A at 4 MHz[2]
  • Asic: Support for sprites, soft scrolling, programmable interrupts, DMA Sound[13]

Resolution[13]

  • Mode 0: 160x200 pixels with 16 colours
  • Mode 1: 320x200 pixels with 4 colours
  • Mode 3: 640x200 pixels with 2 colours

Colour[2]

  • Depth: 12-bit RGB
  • Colours available: 4096
  • Maximum colours onscreen: 32 (16 for background, 15 for sprites, 1 for border)

Sprites [13]

  • Number: 16 high resolution sprites per line
  • Sizes: 16x16 (each sprite can be magnified 2x or 4x in X and Y)
  • Colours: Each sprite can use up to 15 colours

Memory [13]

  • RAM: 64 kB
  • VRam: 16 kB
  • ROM: 32 kB

Audio

IO[2]

Audio output, 2x Digital controller connectors, Analog controller port (IBM standard), Lightun connector (RJ11), Audio and RGB Video output (8-pin DIN), Power supply socket from external PSU, Power supply socket from monitor.