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How do I determine if the 1-gig expansion has been installed?

How do I determine if the 1-gig expansion has been installed?

2007-11-10 by eric_swhite

I have checked the blank sample size, and it's +56. I read somewhere in 
the old posts that a 1-gig expansion gave lots more memory. What would 
the blanked-out memory size display read then? We are all probably not 
the original owners of these misbegotten keyboards. Musicians are a 
poor lot. They are always selling their gear, to survive, or to get new 
gear. These P2k units have bounced around for twenty years. You have to 
be a detective to even operate the thing. Once it starts, the thing 
just comes alive again. I am sure it is thanking us, like a orphan. I 
have opened it up, to find the O.S. It is 4.2  I was looking for the 1-
gig expansion board. I didn't know what it would look like. Does Wine 
Country ever show pictures of it? Just curios I guess.     ESW

Re: How do I determine if the 1-gig expansion has been installed?

2007-11-10 by duncan

ah- that's 1 meg, not 1 gig! :-)

this is a slightly confusing area because of the way the memory is
divided in two & the way it is addressed. I don't know how much actual
memory there is in either version in numbers of kB, but there were two
sizes at the time my 2002 manual was written, "stock" & "expanded".

[goes to reference library...]

the 2002 manual says that the machines will contain 256 or 512
thousand 12-bit words in total. in real money, that's 384kB or 768kB
of storage, which really isn't much, but is closer to matching the
capacity of one or both sides of the old single density 3.5" discs we use.

the book says that the stock machine used only one side of the floppy,
which is probably where we get the idea that it's 1/2 a meg. the block
count for an empty sample goes to 128, which probably means 128,000
12-bit words, & this is mirrored in the other half of the machine's
memory to give a total of 256,000 12-bit words.

I don't think there was an expansion beyond this, since it wouldn't
have all fitted on one floppy; remember that the machines work with
single-density discs only.

duncan.

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