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#tia

3 posts

RetrogamingDeep Dive October 4, 2026 10 min read

Atari 2600 TIA Audio: Divider Chains, AUDC Waveforms, and Clock-Accurate Sound

Understand Atari 2600 TIA sound from AUDC, AUDF, and AUDV through divider and noise state, mixing, save states, and cycle-level emulator tests.

#atari-2600#tia#audio

RetrogamingDeep Dive October 4, 2026 7 min read

Atari 2600 TIA HMOVE: Motion Nibbles, Color Clocks, and the Left Comb

Reproduce TIA horizontal motion by separating coarse reset strobes, signed motion-register clocks, HMOVE timing, and the scanline's visible comb artifact.

#atari-2600#tia#hmove

RetrogamingDeep Dive October 3, 2026 8 min read

Atari 2600 TIA Collisions: Sticky Latches, Object Pixels, and Beam Timing

Trace Atari 2600 TIA collision latches from object-pixel overlap through CXCLR, then validate collision timing with Stella's debugger and hardware-aware tests.

#atari-2600#tia#collisions