Model A

From BeebWiki
Revision as of 12:19, 12 September 2020 by Cverrier (talk | contribs)
Jump to: navigation, search

BBCMicro.png

The BBC Model A was created as a lower-cost variant to encourage higher sales outside of the schools sector. It was launched at a price of GBP £235 (compared with GBP £335 for the Model B). This price rose to GBP £299 as Acorn found they couldn't make it at the lower price.

While physically identical, the Model A lacked a number of internal components and interfaces.

Internal

  • 16Kb of RAM instead of 32Kb (The empty spaces were fitted with sockets to simplify upgrades)
  • 6522 VIA Chip

Rear interface sockets

  • RGB port
  • Serial port
  • Analogue port

Underside interface sockets

  • Tube
  • User port
  • Centronics (printer) port
  • 1MHz Bus




16K RAM instead of 32K (although the empty sockets were present on the motherboard). The Model A lacked a 6522 VIA chip (again with an empty socket on the board). None of the expansion ports on the underside of the machine were fitted.