[BBC-Micro] 128K Upgrade Board - Fitting Howto

[D.G. van der Pol]

This sounds like a Solidisk 2/4Meg upgrade. As you might have  
guessed, this one has 128k ram, used for sideways- and shadow ram.
I think the instruction manual should be on BBC Lives! <http:// 
www.nvg.ntnu.no/bbc/doc/Solidisk-2and4meg-manual.rtf>

I have a 4meg/256k board from Solidisk. The ram part of the board is  
OK, but the 4MHz is very unreliable.

I used this board primairy for Interword, as you have a lot of  
sidewaysramsockets & shadow ram.

Have fun!

Daniel G.


Op 11-nov-2006, om 9:36 heeft Mike Howard het volgende geschreven:

> Hello All,
>
> I have a 128k upgrade board for a BBC/B but unfortunately I don't have
> the fitting instructions.
>
> The board is marked '6502' above the 6502 chip and 'TWO' 'MEG' '128'
> (printed underneath each other)to the left of the 6502 chip.
>
> It has a switch wired from the top edge of the board and 3 wires
> soldered to the bottom edge (underside) of the board.
>
> Obviously, it plugs into the 6502 socket on the motherboard but which
> header (S20? S22?) and in which order do the 3 wires attach? The wires
> are coloured black, brown and red.
>
> Anybody any idea?
>
> Any help appreciated.
>
> Cheers,
> -- 
> Mike Howard			aixguru at blueyonder dot co dot uk
> Eccleston			(Hotmail Reply-To is a spam trap)
> UK
>
>
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