Comments (1)
Thank you for the bug report.
As I explained in a separate email, the limiting factor here is not burden as such, rather it is the total memory needed for sample precalculation for the instrument. This memory usage is proportional to the number of notes times the length of the longest note (i.e. the last two factors of the four that constitute the burden).
The version of nasm
that is included in the distribution as part of the easy_exe
setup has a bug that makes it unable to reserve more than 256MB of uninitialized space in a single declaration. When a larger size is requested, only the bottom 28 bits of the size in bytes are used. A sufficiently large sample precalculation buffer will hit this bug, causing the sample precalculation to overwrite other buffers, resulting in broken sound.
The bug can be worked around by splitting the declaration of the sample buffer into more declarations with smaller sizes. But I would rather just upgrade the included nasm
(don't know why I put such an old version in the first place) and then change the declaration in oidos.asm
to use reso
. This is what makes most sense anyway (allocating a number of 16-byte units) and has the side effect of requiring a nasm
which is new enough not to have the bug. ;)
Some action items:
- Change reservation directive to use
reso
. - Update the included
nasmw.exe
(on next release). - Clarify sample generation process (all tones at maximum note length) in the documentation.
- Output memory usage from the converter.
from oidos.
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from oidos.