Sets fixed volumes or enables dynamic envelope modulation for Channels A, B, and C.
Set BDIR=1, BC1=1 to write the target register address onto the DA0–DA7 lines.
Understanding the KC89C72: Technical Datasheet Guide to the Classic CMOS Programmable Sound Generator The kc89c72 datasheet
Communicating with the KC89C72 relies heavily on the state of two primary bus control lines: and BDIR (Bus Direction) . Modern microcontrollers must sequence these pins to write addresses or parameters to the chip:
: Found in Korean platforms like the Samsung SPC-1000 and SPC-1500, alongside various localized ZX Spectrum and MSX clones (such as the Daewoo Zemmix). Sets fixed volumes or enables dynamic envelope modulation
When designing with the KC89C72, engineers typically use a range of development tools, including assemblers, compilers, and in-circuit emulators. The microcontroller's popularity has led to the creation of many third-party development boards, libraries, and software frameworks, making it easier to get started with KC89C72-based projects.
Built-in general-purpose parallel ports often used to read joysticks or keyboard matrices. Pinout and Hardware Configuration Modern microcontrollers must sequence these pins to write
) by 16, and then divides it again by the 12-bit binary integer loaded into the relative channel registers (