Vintage ACORN BBC B Issue 4 Modified Motherboard
To take EPROM 2764 (8K) to 27512 (32K) in IC52 , 58 & 100.
and SRAM 62256 (16K) , not fitted , in IC101.
with DFSNET 1.20 (8271 Disc Contoller)
27512 fitted to IC52 :-
Wordwise Plus Ver 1.48B
Megarom Ver 1.01
DFSNET Ver 1.20
Loudspeaker has 3.5mm Socket on LHS of case (See Photo 2) ,
allows speaker to be muted.
SOUND OK , defective 76489 has been replaced.
All screws present.
TESTED Sound , Disc , RGB & Monitor outputs only.
(Photo 7 & 8)
Net Weight 5Kg
UK preferred payment by Bank Transfer. See Invoice.
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