The ICPAmerica/MCSI IND-386SXE is a half-size PC/XT form factor single-board computer engineered for industrial embedded control and applications where conventional desktop systems are unsuitable. Built around an AMD or Intel 80C386SX processor running at 25 MHz, it delivers PC/AT compatible architecture within a compact footprint while operating from a single +5 VDC supply at 4.0 watts maximum.
## Technical Specifications
**Processing & Memory**
• CPU: AMD or Intel 80C386SX @ 25 MHz
• Optional co-processor: 80C387SX or Cyrix 87SLC numeric co-processor (68-pin PLCC socket)
• System RAM: 512 KB DRAM (one bank of 256 K×16, configurable via four 256 K×4 DRAMs, 70 ns max access time)
• PROMDISK Disk Emulator: 4 MB capacity with eight 32-pin JEDEC standard byte-wide sockets supporting EPROMs, FLASH EPROMs, NVRAMs, and SRAMs; three socket groups allow mixed chip types or single-drive configuration
**I/O & Interfaces**
• I/O Bus: P1/P2 98-pin edge connector with DMA request (DRQx) and acknowledge (DACKx/) lines; Reset input on pin B16
• Real-Time Clock: MC146818 equivalent with 128 bytes CMOS RAM (14 bytes clock/calendar, 114 bytes BIOS)
• On-board lithium battery for RTC backup
• Parallel Printer Port: IBM PC/AT compatible, configurable as standard, 8-bit bi-directional, or disabled; twelve buffered outputs and five status inputs
• Serial Ports: Dual 16C550 compatible RS-232; Serial Port 2 configurable as RS-232 or RS-422/485
• Floppy Disk Port: Supports up to two 3.5″ or 5.25″ drives up to 2.88 MB
• IDE Hard Disk Port
• AT (PS/2) compatible keyboard and mouse ports
**System Firmware**
• BIOS: AMI with Internal Setup utility (ASETUP.EXE)
## Key Features
• Compact half-size form factor for space-constrained installations
• Single +5 VDC supply minimizes power distribution complexity
• Flexible memory socket configuration for mixed device types
• Battery-backed real-time clock with 128 bytes CMOS storage
• Multiple serial port configurations supporting RS-232, RS-422, and RS-485
• PC/AT software compatibility via AMI BIOS
## Typical Applications
Industrial control systems, embedded computing platforms, process automation, and equipment requiring PC/AT compatible architecture in confined spaces.
## Compatibility & Integration
MS-DOS and IBM PC/AT compatible software architecture. Standard 98-pin edge connector enables integration into backplane systems. Dual serial ports with protocol flexibility support legacy and modern industrial networking schemes.
