Re: //e revisions?

[phs172m@vaxc.cc.monash.edu.au (Stephen Harker)]

In article <mnementhCooFHK.94D@netcom.com>, mnementh@netcom.com (David R. Villegas) writes:
> irsman@iastate.edu (Ian Schmidt) wrote:
> 
>>>I was reading an old issue of InCider and noticed that the Video Overlay
>>>Card worked in enhanced //e's only if they were revision B or higher.
>>>Now I'm curious- what's a rev. B //e?  Is it a //e with the built-in numeric
>>>keypad?  And were later revisions released?
>>
>>A Rev B. or later IIe is a IIe capable of displaying double-hi-res, and it
>>came out almost immediately after the IIe rollout in '84.  There were many
>>more revisions, including the keypad one you mentioned.
> 
> Now I'm confused.  My motherboard says 'rev. A' but the thing definitely can
> display double hi-res and it was enhanced when I bought it way back when.

	That is because Apple, in their infinite wisdom, had more than
one revision A.  The first release of the //e in the US (in 1983) was
labelled revision A and could not do double hi-res.  All later
revisions could, starting from the first revision B.  All //e's sold
as enhanced had the double hi-res capability, although it is possible
to buy second hand //e's with the first revision A motherboard that
have been enhanced by their owners.

	In addition to this all of the //e's with PAL video were
capable of double hi-res including the PAL revision A.  PAL video
//e's were of course sold outside the USA in Europe, Asia, Australasia
or anywhere else that used PAL video.

-- 
Stephen Harker			was phs172m@vaxc.cc.monash.edu.au
ex Monash University		now sjh@phadfa.ph.adfa.edu.au
now ADFA (Canberra)		Baloney baffles brains: Eric Frank Russell