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Re: DSP memorymap problem
Posted by: insane/tscc Jun,27.2018-15:16 

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





[All messages in this thread]

Topic Posted by  Date 
DSP memorymap problem Emphii Jun,26.2018-21:56
  Re: DSP memorymap problem Emphii Jun,26.2018-21:58
    Re: DSP memorymap problem mikro Jun,27.2018-10:24
      Re: DSP memorymap problem Emphii Jun,27.2018-11:25
  Re: DSP memorymap problem tat Jun,27.2018-12:25
  Re: DSP memorymap problem ggn Jun,27.2018-14:31
  Re: DSP memorymap problem insane/tscc Jun,27.2018-15:16
    Re: DSP memorymap problem Emphii Jun,27.2018-23:27
      Re: DSP memorymap problem tat Jun,29.2018-15:35
        Re: DSP memorymap problem Emphii Jul,03.2018-20:14
          Re: DSP memorymap problem Daniel / New Beat Jul,05.2018-00:07
            Re: DSP memorymap problem Emphii Jul,05.2018-14:22
              Re: DSP memorymap problem mikro Jul,06.2018-08:15
          Re: DSP memorymap problem mikro Jul,06.2018-08:17
            Re: DSP memorymap problem Emphii Jul,12.2018-23:09


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