[BBC Micro] [Computers ]
The BBC Model B+ 128K was the final BBC model, it squeezed every last bit of memory out of the 8-bit computer. It is the same as the BBC Model B+ 64K with the addition of a further 64K RAM which is used as sideways RAM and can have ROM images loaded into it. Compared to the BBC Model B, it has:
It was launched in 1984 shortly after the BBC Model B+ 64K and was soon replaced by the BBC Master.
See BBC Micro .
In November 1985 Acorn User published a News item titled "Enter ther 128k Beeb".
In December 1985 Practical Computing magazine published a review titled "BBC Plug-ins "
I bought this example on ebay in October 2002. It is in near mint condition, still having the plastic film on the keystrip. Here are some pictures:
BBC Model B +128K box
BBC Model+128K in polys.
Note the distinguishing 128K labels on the back left, on the keystrip and at the right front.
BBC Model +128k with the top off.
You can just see the additional RAM on a vertical board on the right of the picture.
BBC Model +128K motherboard
The BBC Model B+ 128K has a vertical 64K RAM card on the extreme right. This additional 64K is used as sideways RAM and can have ROM images loaded into it.
|Motherboard||233,000 Issue 1|
|ROM||48KB (maximum 192K ROM)|
|Disc Filing System||DFS 2.23|