tag
7 posts
Follow Saturn CD sectors through FAD ranges, masked subheader filters, selector connections, partition buffers, DMA, and transfer completion.
Follow Saturn SCSP sound through 32 programmable slots, shared sound RAM, the sound CPU, DSP sends, memory arbitration, and testable timing.
Inspect the Saturn SCU DSP's small Harvard-style memories, instruction buses, multiply-accumulate path, program loading, and cycle-aware emulator tests.
Follow Saturn SMPC INTBACK requests from SH-2 parameters through peripheral scans, OREG chunks, continuation, timeout, and frame-aligned input delivery.
Trace Saturn VDP1 command lists from VRAM through drawing and END control to framebuffer switching, then diagnose synchronization faults with VDP2 in view.
Understand Saturn VDP2 plane generation, VRAM pattern tables, per-line scrolling, priority decisions, and composition with the VDP1 image.
Read the Saturn SCU DMA contract: three CPU transfer levels, direct and indirect modes, byte counts, address updates, triggers, and documented restrictions.