[net.micro.mac] Mac Plus memory question

mdr@reed.UUCP (Mike Rutenberg) (02/11/86)

The Mac Plus has two(!) 16 bit wide banks of memory to get its 1MByte.
The display is refreshed from one of the banks and the processor likely
runs at reduced performace (as on a mature Mac).  Does the Mac Plus run
faster from the second bank of (unshared) RAM?

Mike

dafa@ihwpt.UUCP (David Fay) (02/13/86)

> The Mac Plus has two(!) 16 bit wide banks of memory to get its 1MByte.
> The display is refreshed from one of the banks and the processor likely
> runs at reduced performace (as on a mature Mac).  Does the Mac Plus run
> faster from the second bank of (unshared) RAM?
> 
It doesn't seem so. My friend timed his 2 Meg Levco Monster Mac against the
Mac+ on a number crunching PC layout program. He was interested to see
whether Apple had used Levco's trick to speed up the Mac+ (the Levco
upgrade was measured by MacWorld to be 23% faster than a standard 512K on
spreadsheet calculations). No such luck. Levco was exactly twice as fast
as Mac+ at number crunching.
-- 
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David Fay
AT&T Bell Laboratories
Naperville, IL 60566
ihnp4!ihexp!dafa