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Atari coding BBS
| Re: DSP memorymap problem |
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Posted by: insane/tscc
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Jun,27.2018-15:16
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It is like tat said - 160*120=19200 is bigger than the 16384 dsp word space available for X and Y memory. If your code is not in 0000..01ff you'll end up overwriting your own code. If you overwrite X:0x3800 you'll overwrite the TOS communication code/debugger.
From my notes: (dunno if it helps)
X/Y-Mem 0000-01ff: RAM/ROM
X/Y-Mem 0200-3fff: 16k Words RAM
X/Y-Mem 4000-7fff: 16k Shadow of 0000-3fff
X/Y-Mem 8000-ffff: Reserved
Prg-Mem 0000-01ff: Internal RAM
Prg-Mem 01ff-3fff: Same as Y-RAM 01ff-3fff
Prg-Mem 4000-7fff: Same as X-RAM 0000-3fff
Prg-Mem 8000-ffff: Reserved
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[All messages in this thread] [Start new thread]
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Topic
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Posted by
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Date
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DSP memorymap problem
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Emphii
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Jun,26.2018-21:56
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Re: DSP memorymap problem
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Emphii
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Jun,26.2018-21:58
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Re: DSP memorymap problem
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mikro
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Jun,27.2018-10:24
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Re: DSP memorymap problem
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Emphii
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Jun,27.2018-11:25
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Re: DSP memorymap problem
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tat
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Jun,27.2018-12:25
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Re: DSP memorymap problem
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ggn
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Jun,27.2018-14:31
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Re: DSP memorymap problem
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insane/tscc
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Jun,27.2018-15:16
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Re: DSP memorymap problem
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Emphii
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Jun,27.2018-23:27
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Re: DSP memorymap problem
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tat
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Jun,29.2018-15:35
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Re: DSP memorymap problem
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Emphii
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Jul,03.2018-20:14
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Re: DSP memorymap problem
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Daniel / New Beat
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Jul,05.2018-00:07
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Re: DSP memorymap problem
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Emphii
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Jul,05.2018-14:22
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Re: DSP memorymap problem
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mikro
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Jul,06.2018-08:15
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Re: DSP memorymap problem
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mikro
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Jul,06.2018-08:17
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Re: DSP memorymap problem
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Emphii
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Jul,12.2018-23:09
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Re: DSP memorymap problem
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Thadoss/Dune
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Sep,30.2023-09:54
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Re: DSP memorymap problem
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ggn
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Oct,10.2023-16:19
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Re: DSP memorymap problem
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Thadoss/Dune
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Oct,10.2023-23:34
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Re: DSP memorymap problem
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Thadoss/Dune
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Oct,10.2023-23:55
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Re: DSP memorymap problem
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Thadoss/Dune
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Oct,11.2023-00:21
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What's the anti-troll code?
That's your personal code to be able to add comments and messages on the dhs.nu site.
Don't have a code or forgot it? Fix it here.
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