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- Newsgroups: comp.sys.mac.hardware
- Path: sparky!uunet!caen!yancm
- From: yancm@engin.umich.edu (Eugene Harold Mcnay Ii)
- Subject: Re: More memory = lousy performance in IIci. Help.
- Message-ID: <mld=49_@engin.umich.edu>
- Date: Thu, 07 Jan 93 15:27:36 EST
- Organization: University of Michigan Engineering, Ann Arbor
- References: <726249086@juliet.cs.duke.edu> <1993Jan6.153538.5022@gmuvax2.gmu.edu> <1993Jan7.051320.15588@erenj.com>
- Nntp-Posting-Host: ocher.engin.umich.edu
- Lines: 28
-
- >In article <726249086@juliet.cs.duke.edu> writes:
- >> I have recently replaced the memory in my IIci with 8 meg (4 x 2) 80 ns in
- >> Bank A and performance has gone to pot. Screen rewrite, window operations
- >> and even entering text is much slower. Performance on AfterDark screen
- >The problem is this. The Mac IIc1 uses the first bank of memory for video, so
- >there is a constant conflict between the internal video and the processor over
- >use of the ram in your system. You have two choices to fix this.
- >
- I just read another possible solution in the MAC User '93 Buying guide:
- 4) Increase the control panel selected cache so that processor
- ram is forced to start in the second bank.
-
- I'll leave it to the net as to wether this might work. Does this mean that
- one would need to set the control panel cache to 3M ? Does this just
- waste the new ram you install in bank A?
-
- I am looking at buying a IIci. This little feature seems rather
- bogus. One of the main reasons I would want a IIci is that it has
- 8 memory slots. What good are they if you can't use the first four
- for more than 1M without hurting performance.
-
- What does control panel cache do?
- What is the ballpark cost of a nu-bus video card?
- --
- /^\ + "Make things as simple as possible, but no simpler." +
- /___\ + - A. Einstein +
- //zzz\\ + Gene McNay: University of Michigan Aerospace Structures +
- // z \\ + email: yancm@caen.engin.umich.edu +
-