[comp.sys.mac.hardware] What's In The 512k Rom

Matt.O'connell@f421.n109.z1.fidonet.org (Matt O'connell) (12/07/90)

> I just read MacUser and MacWorld and noticed that the discontinued
> macs (i.e. Plus, SE, CX, X) all have 256k ROM:s, while allmost all the
> remaining
> machines have 512k ROM:s. It could be a pure coincidence, but
> something tells me that it isn't.
>     So, what I wonder is if someone out there knows what extra there
> is in these 512k ROM:s. (Of couse SOME people know, but will they tell
> me :-).
One correction to the list you mentioned....  The Plus hass 128K ROM not 
256K.  Now what is in the 512K ROM?  Features like 32bit QuickDraw, 
which is loaded from a system document on smaller ROM machines.  Things 
like this that were added to the System eventually are added to ROM when 
space allows.  Also if you have been reading the press you can find 
articles on the new Classic's ROM Disk.  Approximately  300 and 
something K of the ROM is a solid state disk.  Speculation is it is for 
a diskless Mac on a network.


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