Blue Book Interpreter/ObjectMemory/BitBlt

David T. Lewis lewis at
Sun May 7 16:02:48 UTC 2006

On Sun, May 07, 2006 at 04:45:52PM +0200, Wolfgang Helbig wrote:
> Hi,
> the paper "Forward to the Past" at
> mentions that the ST-80 Interpreter and BitBlt classes were typed in from the 
> Blue Book.
> Is this material still available? Preferable in the *.st format, ready to be
> filed in in Squeak?
> And did any one type in the ObjectMemory implementation from the Blue Book?
> Still available?

The book is out of print but occasionally available on the used book
market. There is an on-line version of the chapters you are looking
for here:

Stephane Ducasse provides a large collection of on-line books and videos.
Follow the "documentation" links from

As for the *.st formatted files for Squeak, it's already there, except
that it has been put into a separate package (VMMaker) that you have to
install from SqueakMap.

If you want a version that is close to whatever was originally typed
in from the Blue Book, get the oldest Squeak image and VM that you
can find on the net. I don't know what's still out there, but any
number of folks on this list probably have old copies laying around
on hard drives if you need them.


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