Uploaded April 2026 | Updated September 2026, 3 weeks ago

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CGASwap 1.0 is a new DOS TSR that lets you change CGA palette colors in ANY CGA game — on real hardware. No EGA or VGA required.
Switch between all 6 CGA palette variants and adjust background colors live using simple Ctrl+Alt hotkeys.

This video also covers the latest PalSwapT 3.5 improvements:
• Cleaner VGA code
• New monochrome gray preset
• Smaller resident footprint
• Better compatibility with Yamaha V6355D‑based systems (Olivetti PC1, etc.)

Download CGASwap & PalSwap:
github.com/RetroErik/PalSwap

Topics covered:
• CGA palette switching
• NTSC composite artifact colors
• DOS TSR utilities
• Real‑hardware CGA testing
• Olivetti PC1 / Yamaha V6355D behavior
• Assembly‑level palette manipulation

Chapters:
00:00 Intro
00:18 What CGASwap 1.0 does
01:10 Hotkeys & palette switching
02:40 Real hardware demo
04:15 PalSwapT 3.5 updates
06:00 Composite/NTSC notes
07:20 Compatibility notes
08:10 Outro