Watford Electronics ROM/RAM Board for the BBC Micro Model B

Details:

* Tested and working

* Riser pins are straight / undamaged although I have added two 28pin sockets to raise the height a little to allow for easier fitting

Includes:

* Board

* Copy of the original instructions

Optional RAM:

* 2x HM6264LP-15 RAM chips are needed to be fitted to sockets 15 H / L for the Sideways RAM to function

Fitting:

* Flying leads fitment are:

   White/Green: S21, West

   Black: S21, East

* Fly lead to any pin with a R/W signal on it (e.g. IC77 pin 8 / IC14 pin 1 / etc)

* Remove of your IC76 chip and insert the one with the soldered wires on or alternatively unsolder the wires on the 74LS163 chip and solder them onto your own IC76

Notes:

* Does NOT include any of the ROMs shown

* I accept no responsibility if you damage the board or your BBC when fitting this

* Free fitting if you bring your BBC to me, Drighlington near Leeds

 

No returns or negative feedback please

Delivery via RM 48 tracked