Changes
An article in Amstrad Action described how a Silicon Disk can be converted into a 256K memory expansion. I think this applies to the RAM part only. [which article is that?]
== Some relevant Info from Manual ==
* The '''64K silicon disc''' is contained in one unit (Operating system ROM), while the '''256K silicon disc''' is in two units (256K RAM and Operating system ROM).
* When the computer is powered up the ROM should sign itself on as:-
** 'Silicon Disc 0.1' (for use with 64K BANKED RAM)
** 'Silicon Disc 1.1' (for use with 256K BANKED RAM)
* Remember the contents of the silicon disc are lost if the computer is switched off!
* 64K Silicon Disc: OUT &7F00, &C4+BANK ;where BANK is 0..3
* 256K Silicon Disc: OUT &7F00, &E4+(BANK AND 3)+(BANK/4)*8 ;where BANK is 0..16
== Manual ==
