Enterprise 128

The Enterprise 128 doubled the main memory of the Enterprise 64 while preserving the same flexible Nick graphics, Dave sound and I/O hardware, EXOS operating environment and built-in joystick. The additional RAM made the sophisticated display modes and larger programs more practical.

Although the British company failed to establish the range before closing, substantial remaining stocks reached Hungary, where the Enterprise 128 developed an active and enduring user community with new software and hardware expansions.

Notable Features

• 128KB memory offered more room for programs and the machine's flexible video modes.
• Bank-switched architecture could address up to 4MB with expansion hardware.
• EXOS provided a modular operating environment rather than a simple fixed BASIC ROM.

Historical Significance

• The definitive production Enterprise and the model most closely associated with the platform's Hungarian revival.
• A long-lived enthusiast community continued developing software and expansions after commercial production ended.

Collector’s Notes

• Hungarian-market machines and software are an important part of the Enterprise story.
• Expansion bus devices and EXDOS disk interfaces vary, so compatibility should be checked carefully.

Specifications

Technical Information
Name	Enterprise 128
Manufacturer	Enterprise
Launched	Wednesday, May 1, 1985
Country	United Kingdom
CPU	Zilog Z80A at 4 MHz
Units Sold
Operating System	EXOS with built-in word processor; IS-BASIC cartridge; EXDOS with disk hardware
I/O	RGB, RF, cassette, printer, serial/network, two joystick, cartridge and expansion connectors
Keyboard	Integrated full-travel keyboard with colour-coded function keys and built-in joystick
Storage	Cassette; optional EXDOS floppy-disk system
Sound	Dave ASIC, three tone channels plus noise and stereo output
Graphics	Nick ASIC, up to 672 x 512 interlaced and 256 colours depending on mode
Display	Programmable text modes including 40- and 80-column displays
ROM	EXOS system ROM with built-in word processor; IS-BASIC supplied on cartridge
RAM	128KB; expandable to 4MB through banked memory
CPU Speed	4 MHz