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Author Topic: Why low memory on my a1200?  (Read 3887 times)

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Offline Karlos

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Re: Why low memory on my a1200?
« on: May 27, 2010, 10:46:15 PM »
Simply having a hard disk uses memory, as a certain amount is reserved for buffers etc. You can actually change this in your startup sequence by using the addbuffers command with a negative buffer count.

2MB of chip ram is not going to get you far, no matter how much you strip from your configuration.

The best thing you can do is add more memory. Even a basic 4MB of trapdoor ram will be a significant improvement in performance terms.

-edit-

How are you supporting the 6GB drive btw? I thought that you needed OS3.5/3.9 or 3.1 with NSD to support drives > 4GB
« Last Edit: May 27, 2010, 10:52:11 PM by Karlos »
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Offline Karlos

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Re: Why low memory on my a1200?
« Reply #1 on: May 27, 2010, 10:53:35 PM »
Quote from: crawff;561429
Ok thanks,

If i insert a floppy disk game and boot it from a fresh restart, will i have the full memory available to me? as it didn't have to load the hard drive?


This isn't enough. Unless the floppy is a game that takes over the system, your HD will still be mounted by the OS. To prevent that, you need to disable them from the early startup menu which you can get by (re)booting with both mouse buttons held.
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Offline Karlos

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Re: Why low memory on my a1200?
« Reply #2 on: May 27, 2010, 11:00:48 PM »
Quote from: crawff;561431
Thank you both for your help :-)


Until such time as you can upgrade, what I would suggest is, repartition your 6GB drives into a few partitions all of which are below the 4GB limit and leave the upper 2GB empty.

Writing beyond the 4GB boundary without proper large HD support (such as is found in OS3.5+) is going to destroy your data.
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Offline Karlos

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Re: Why low memory on my a1200?
« Reply #3 on: May 28, 2010, 12:19:27 AM »
Quote from: Tajmaster;561463
This may sound like an obvious answer but just buy some extra RAM or an accelerator, problem solved :)


Granted, but that doesn't fix the HD size issue.
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Offline Karlos

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Re: Why low memory on my a1200?
« Reply #4 on: May 28, 2010, 12:21:01 AM »
Quote from: illy5603;561473
That's pretty much it. I can't imagine running an A1200 with a hard disk without at least more memory. Otherwise it is a floppy disk gaming machine.


I did it for a brief while between selling a memory expansion and saving for my first accelerator card.

The difference from 14MHz 020/2MB chip ram only to 25MHz 68040/16MB fast was pretty astounding :)
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