The WinSystems PCM-POST is an 8-bit PC/104 diagnostic module that isolates power-up and boot failures in AT-compatible single board computers by displaying Power-On Self-Test (POST) codes generated during the BIOS initialization sequence. Two 7-segment displays render 2-digit hexadecimal diagnostic values, enabling rapid identification of failure points in the boot sequence. Three status LEDs monitor +5V, +12V, and −12V supply rails simultaneously. Beyond hardware diagnostics, the module supports custom status code output for real-time software debugging in embedded environments where conventional debug methods are impractical. Its compact PC/104 form factor accommodates space-constrained embedded applications.
Technical Specifications
• Bus Interface: PC/104 compliant, 8-bit; decodes single I/O port at 80 hex
• Diagnostic Display: Two 7-segment displays (2-digit HEX output)
• Power Supply Monitoring: Three LEDs indicate +5V, +12V, and −12V status
• Power Requirements: +5V primary supply
• Operating Temperature: −40°C to +85°C
• Form Factor: Standard PC/104 module (3.6″ × 3.8″)
– Key Features
• BIOS POST code decoding and display during system initialization
• Real-time identification of boot sequence failure points
• Programmable status code output for application-level diagnostics
• Simultaneous monitoring of three power supply rails
• Visual LED indicators for supply voltage validation
– Typical Applications
• Single board computer power-up troubleshooting
• BIOS initialization diagnostics
• Embedded system boot sequence validation
• Software debug output in resource-constrained environments
• Supply voltage health monitoring during system startup
– Compatibility & Integration
• PC/104 specification compliant
• Compatible with AT-compatible BIOS implementations that output POST codes
• Interfaces with BIOS during boot—independent of host operating system
