Acorn Business Computer ABC 110

The Acorn Business Computer ABC 110 replaced one ABC 100 floppy drive with a 10MB hard disc and supplied a colour monitor. Its internal Z80 second processor ran CP/M while the BBC-derived host controlled display and input/output.

A handful of ABC 110 systems survive, documenting Acorn’s short-lived attempt to enter the early-1980s office-computer market.

Notable Features

• The main processing arrangement was Rockwell 6512 at 2 MHz with Zilog Z80 second processor at 6 MHz.
• Its standard memory provision was 64KB host plus 64KB co-processor RAM.
• The model’s storage arrangement was One 5.25-inch floppy drive and 10MB hard disc.

Historical Significance

• A handful of ABC 110 systems survive, documenting Acorn’s short-lived attempt to enter the early-1980s office-computer market.
• This entry represents a distinct processor, storage or enclosure design rather than a software bundle.

Collector’s Notes

• Surviving examples are scarce, and fitted boards, firmware and storage may differ from announced specifications.
• Original documentation, peripherals and prototype provenance are particularly important for specialist Acorn systems.

Specifications

Technical Information
Name	Acorn Business Computer ABC 110
Manufacturer	Acorn Computers
Launched	Sunday, January 1, 1984
Country	United Kingdom
CPU	Rockwell 6512 at 2 MHz with Zilog Z80 second processor at 6 MHz
Units Sold
Operating System	CP/M 2.2 with Acorn business applications
I/O	BBC interfaces, printer, serial, Econet option, SCSI/MFM storage and Tube link
Keyboard	Separate business keyboard
Storage	One 5.25-inch floppy drive and 10MB hard disc
Sound	BBC-compatible programmable sound
Graphics	BBC Micro colour display hardware
Display	Integrated colour monitor
ROM	BBC B+ class MOS and business firmware
RAM	64KB host plus 64KB co-processor RAM
CPU Speed	2 MHz host; 6 MHz Z80