Multi-I/O Serial/Parallel Cards - Engineering Application
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
ISA Memory Expander - Engineering Application
Bank-switched memory expansion module tuned for XT, AT, and 286 deployments requiring deterministic mapping, parity instrumentation, and robust coexistence with DMA-heavy workloads.
- Capacity Profiles
- 256KB, 512KB, 1MB address-space maps
- Parity Modes
- Strict parity enforcement and monitor-only mode
- Switching
- Hardware DIP plus jumper matrix for deterministic layout
- Timing Control
- Wait-state presets for weak chipset implementations
- Diagnostics Tooling
- DOS burn-in suite with map integrity reports
- Target Systems
- 8088, V20, 286, 386SX hybrid benches
XT-Emporium NT