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Optimizing N163 in NSF driver #400

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Optimizing N163 in NSF driver #400

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@HeeminTV HeeminTV commented Jan 10, 2026

This PR fixes the current driver with N163 enabled exceeding a frame (single 60Hz tick) by optimizing the waveform copying routine.

Changes in this PR:

  • Replaces addition loop to the actual multiplication (This worked before 0CC, which had table-per-instrument limit of 16, but as it's now 64, the usage of CPU cycles in this loop became massive)
  • Slighly unrolls the loop for writing to $4800

@HeeminTV
N163 NSF driver optimization
7baa30f 
Fixing current driver exceeding a frame to progress
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Gumball2415 commented Jan 10, 2026 •
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changing the target to main branch

@Gumball2415 Gumball2415 changed the base branch from app-emu-module-nsf_driver-dev to main January 10, 2026 10:07
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@HeeminTV @Gumball2415