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BBC Microcomputer Model B+ 64K

[BBC Micro ]      [Computers ]


The BBC Mode B+ 64K increased the BBC micro's memory from 32K to 64K. Compared to the Model B, it has:

Manuals and documents

See BBC Micro .

BBC Model B+Here is the Acorn product brochure for the BBC B+

In June 1985 Acorn User published a News item titled "BBC B+ Reveled".
In July 1985 Acorn User published a Review titled "B+ Grading".
In July 1985 Practical Computing published a review of the BBC B+ titled "Acorn BBC B+ ".

  BBC Model B +64K

I bought this example on ebay in August 2001.

 Here are some pictures

BBC Model B+ 64K  

BBC Model B+ 64K

The 64K on the right of the keystrip identifies it as a BBC Model B+ 64K 

BBC Model B+ 64K open

 BBC Micro +64K with top off

Note the sideways ROMs are now at top left

BBC Model B+ 64K motherboard  

BBC Micro +64K motherboard.

The BBC Model B+ has a redesigned board layout compared to the previous BBC micros. In particular the sideways ROM sockets have been moved from the front right (under the keyboard!) to the back left by the power supply. The two empty sockets below the sideways ROMs are for the speech system. At the bottom left a Western Digital 1770 has replaced the Intel 8271 disc controller.


Serial No.01-ANB53-5518856
Motherboard233,000 Issue 1
CPURockwell R6512AP
CPU Clock2MHz
ROM48KB (maximum 192K ROM)
Disc ControllerWD1770PH
Disc Filing SystemDFS 2.10