Amstrad CPC 464

The Amstrad CPC 464 was an 8-bit home computer produced by Amstrad in the 1980s. CPC was an acronym for 'Colour Personal Computer', although it was possible to purchase a CPC with a green screen (GT65/66) as well as with the standard colour screen (CTM640). The machine was designed to be a direct competitor to the Commodore 64 and Sinclair ZX Spectrum systems.

The CPC 464 featured a Zilog Z80 processor, 64 KB of RAM, a palette of 27 colours (quite extensive for its time, most competitors having 8 or 16 colours), and an integrated cassette tape deck for program and data storage. Like most home computers at the time, the 464 had its OS and a BASIC interpreter built in (i.e. in ROM). Because the CPC 464 shared the Z80 processor with the ZX Spectrum, some games manufacturers developed games for the two systems partly in parallel.

Successor models in the CPC series were the Amstrad CPC 664 and Amstrad CPC 6128, both of which featured a 3-inch floppy disk drive in place of the 464's tape player (among other differences). External disk drives were available for the 464 (and its successors, for that matter), such as the DDI-1/FD-1 set (interface module and disk drive). With a disk drive in place, the 464 could run CP/M 2.2, and some adaptations of CP/M software was done for the machine. The later CPC 6128 would run CP/M Plus (CP/M 3.0).

Note about the CPC model names: The first digit was a code for the main storage system; '4' denoted a tape deck and '6' a 3-inch floppy disk drive. The remaining digits described the RAM capacity. Thus:

CPC 464 - Colour Personal Computer, Tape Deck, 64K RAM

CPC 664 - Colour Personal Computer, 3" Floppy Disk Drive, 64K RAM

CPC 6128 - Colour Personal Computer, 3" Floppy Disk Drive, 128K RAM

Some later models had extra functions built into BASIC, an enhanced colour palette and a read-only cartridge system. Extra BASIC functions was also built into the DDI-1 disk drive interface, allowing the CPC 464 user to access the AMSDOS disk operating system, and thus the disk drive(s), through BASIC. The final CPC offerings, known as the 'Plus' range, also included the GX4000 video game console, and was a massive commercial failure, not least due to limited game releases from other companies (in-house software division Amsoft couldn't fill the need). The Plus range was only available for the CPC 464 and CPC 6128 models and was denoted by a '+' following the model name.

Magaziness available for the system (at various times) included Amtix, Computing With The Amstrad, (the official) Amstrad Computer User, Amstrad Action, and CPC Attack. Notable gamess include Bloodwych, the Rick Dangerous, Turrican and Dizzy series, and Head over Heels.

See also: Amstrad PCW