CGA/MDA Video Adapter Lab - Engineering Application
Restoration and validation workflow for monochrome and color text-era adapters, including monitor timing and character ROM behavior.
- Adapter Modes
- MDA, Hercules-compatible, CGA text and graphics
- Output Paths
- TTL monochrome, composite, RGBI output checks
- Clock Profiles
- 14.31818MHz domain checks and divider validation
- ROM Handling
- Character ROM preservation and checksum workflow
- Display Validation
- Geometry, sync, and phosphor persistence tests
- Field Scope
- Pre-286 display stack bring-up and troubleshooting
Bill of Materials — Through-Hole Basics
The basic build requires only five DIP ICs and a handful of passive components. All parts are standard through-hole for easy hand soldering.
XT-Emporium