Difference between revisions of "Model A"

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While physically identical, the Model A lacked a number of internal
 
While physically identical, the Model A lacked a number of internal
 
components and interfaces.
 
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
 
16K RAM instead of 32K (although the empty sockets were present on the

Revision as of 12:19, 12 September 2020

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.