Datasheet - Kc89c72

Controls the overall timing duration and shape characteristics (such as sustained, sawtooth, or triangle forms).

Technically, the chip was engineered to support extended graphics modes. It typically offered resolutions that met or exceeded the Video Graphics Array (VGA) standard, often capable of displaying 256 colors at resolutions such as 800x600 or 1024x768. This capability was crucial for the emerging generation of productivity software, such as early versions of Microsoft Windows and CAD applications, which required "real estate" on the screen to display multiple windows simultaneously. The architecture of the KC89C72 utilized a packed-pixel format in higher color modes, a departure from the planar architectures of older controllers, which allowed for easier programming and faster screen redraws in graphical environments. kc89c72 datasheet

The KC89C72 is not a high-volume component in modern electronics, but it is available through several : This capability was crucial for the emerging generation

: Programmable envelope generator with various shapes (sawtooth, triangle, etc.). LD A, 0x08 ; Select R8 (Amplitude A)

LD A, 0x08 ; Select R8 (Amplitude A) OUT (0x80), A LD A, 0x0F ; Max volume (16-level) OUT (0x81), A

Three independent, single-ended analog current outputs that require external amplification.