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Acorn Arcade forums: Games: Unable to move memory
 
  Unable to move memory
  Tin Hat (11:41 8/12/2011)
  arawnsley (12:49 8/12/2011)
    Tin Hat (13:08 8/12/2011)
      Tin Hat (13:23 8/12/2011)
        Enzo (18:01 9/12/2011)
  MEmerton (15:43 9/12/2011)
 
Patric Aristide Message #119416, posted by Tin Hat at 11:41, 8/12/2011
Member
Posts: 56
What can I do about that? Wanted to try "Legends of the lost temple" on my 4MB A4000 running RO3.11 but seems a non-starter. Google suggested mode 12 but that didn't help, nor did manipulating system heap/stack via Task Manager.
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Andrew Rawnsley Message #119417, posted by arawnsley at 12:49, 8/12/2011, in reply to message #119416
R-Comp chap
Posts: 572
Sadly it probably only works on OS2 or Arthur. Some of those very early games basically regarded the desktop and other "standard" parts of the OS as optional stuff, and assumed they were being run from supervisor mode (like old BBC titles). It was common to use things like MemAlloc module to re-size memory areas in ways which later OSs wouldn't allow, hence things don't work. Many early titles also assumed only 1Mb of RAM, and did wierd things on larger RAM systems.

I forget the exact behaviour, but I remember that larger RAM systems would allocate memory more coarsely (ie. in larger blocks) than smaller RAM machines, so some modes would use more RAM for video etc on 4Mb machines, which would sometimes cause odd side-effects. It's more than 20 years ago, though, so my recollection is rusty.

It *might* be worth delete/R-power-on (I remember having to do that one Christmas before I could make Pandora's Box work), to reset how things are configured.
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Patric Aristide Message #119418, posted by Tin Hat at 13:08, 8/12/2011, in reply to message #119417
Member
Posts: 56
Yes I did read about the RO2 issue, thanks for further clearing this up. I've been told however that it "runs on a RISC OS 3.1 machine", suggesting a real Acorn was used.
Does this sound like some sort of UniBoot (which is how I run my Arc) problem? Del-Boot sounds a bit drastic didn't that erase the cmos settings?
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Patric Aristide Message #119419, posted by Tin Hat at 13:23, 8/12/2011, in reply to message #119418
Member
Posts: 56
Shift Boot worked! Can't get past the copy protection though Rage Keeps asking me to press a key and select the resulting colour from the palette. The colour always turns out to be grey though. Argh
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Michael Emerton Message #119422, posted by MEmerton at 15:43, 9/12/2011, in reply to message #119416
Member
Posts: 75
Try creating a RAM disc to take the available memory to just below 1024k

This used to work for some old stuff I had!
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Xavier Tardy Message #119423, posted by Enzo at 18:01, 9/12/2011, in reply to message #119419
Member
Posts: 56
Shift Boot worked! Can't get past the copy protection though Rage Keeps asking me to press a key and select the resulting colour from the palette. The colour always turns out to be grey though. Argh
Patric, I told you : use the right disk one I've sent you : this one is cracked so there is no copy protection.
The other archive, with 2 files, contains the disk images of the original disk one and disk two, so don't use disk one from this archive.
The game runs perfectly, then.
Cheers.
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Acorn Arcade forums: Games: Unable to move memory