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tildearrow beed67aaa1 BubSys: optimize 2023-02-04 17:22:16 -05:00
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README.md Take 2 2022-09-17 00:16:20 +09:00
k005289.cpp BubSys: optimize 2023-02-04 17:22:16 -05:00
k005289.hpp BubSys: optimize 2023-02-04 17:22:16 -05:00

README.md

Konami K005289

Summary

  • 2 12 bit timer
  • Address generator

Source code

  • k005289.hpp: Base header
    • k005289.cpp: Source emulation core

Description

This chip is used at infamous Konami Bubble System, for part of Wavetable sound generator. But seriously, It is just to 2 internal 12 bit timer and address generators, rather than sound generator.

Everything except for internal counter and address are done by external logic, the chip is only has external address, frequency registers and its update pins.

Frequency calculation

Input clock / (4096 - Pitch input)