12 Nov
2007
12 Nov
'07
10:34 p.m.
Brian L. Stuart wrote:
The address was used in 2 18-bit parts. The upper
part was the
segment number and the lower the offset into the segment. That meant
segments could be no more the 256K and you could have no more than
256K of them. Because there was a one-to-one correspondence between
files and segments, that would have limited files to 256K.
256K *words* as I recall, or 1MB worth of nine-bit bytes.
They did some "stuff" to get around that,
The dread multi-segment files. Not terribly well supported as I recall.
--
Chris Kennedy
chris at mainecoon.com AF6AP
http://www.mainecoon.com PGP KeyID 108DAB97
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"Mr. McKittrick, after careful consideration..."