User Tools

Site Tools



  • PSG manage sound and keyboard
  • It use a modified clock from 6502 CPU. This clock is a bit delayed if we compare from CPU's clock (phi2)

The AY-3-8912 is the Oric's Sound chip providing output to both the internal speaker and two pins on the Cassette DIN port.

Many people have disconnected the internal speaker preferring the very much enhanced quality through an external amplifier.

oric/hardware/ay-3-8912.txt · Last modified: 2017/12/18 14:56 by polluks