Legacy floppy controller integration, diagnostics, and data recovery profiles for 360KB, 720KB, 1.2MB, and 1.44MB workflows.

Interface

8-bit and 16-bit ISA controller variants

Drive Modes

360KB, 720KB, 1.2MB, 1.44MB verified

BIOS Pairing

XT and AT BIOS compatibility tables

Signal Checks

Index, step, direction, ready, and write gate diagnostics

Recovery Toolkit

Read-retry and sector salvage operation notes

Test Harness

Head alignment and media condition scripts

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

COM/LPT/FDC multi-function ISA cards configured for deterministic IRQ and DMA behavior in restoration and industrial control systems.

Interfaces

COM1-COM4, LPT1-LPT3, optional game port and floppy

IRQ Mapping

2, 3, 4, 5, 7 selectable profiles

Address Ranges

3F8h/2F8h/3E8h/2E8h and custom map options

UART Coverage

8250, 16450, 16550A compatibility paths

Tooling

Loopback and parity stress diagnostics

Deployment

Field profile templates for mixed adapter stacks