1. Product Overview
Product Name: Half Size Slot CPU 486 Processor Chip-on-Disk EDO RAM
Model: AP-486LH
Article Number: AP-486LH
Series: AP-486 Industrial CPU Card Series
Manufacturer: (Not explicitly stated; typically produced by an industrial computing hardware manufacturer specializing in embedded and legacy PC/104 systems)

The AP-486LH is a half-size slot CPU card designed for industrial and embedded computing applications requiring a compact, reliable, and fully integrated 486-class processing platform. It integrates an AMD X5 133 MHz processor, onboard VGA/LCD controller, Ethernet LAN interface, and flexible memory and storage options, making it suitable for legacy system upgrades, industrial automation, and embedded control systems.

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2. Key Features
- Compact Half-Size Slot CPU Card: Designed to fit standard half-size ISA or passive backplane slots (dimensions 185 mm × 122 mm).
- High-Performance 486-Class Processor: Equipped with an AMD X5 133 MHz CPU, offering robust performance for DOS, early Windows, and real-time operating systems.
- Integrated VGA/LCD Display Controller: Built-in Intel/Chips & Technologies 65550 graphics chipset supports both CRT VGA and flat-panel LCD displays.
- Flexible Memory Configuration: Supports 1 MB to 128 MB of EDO or Fast Page DRAM via two 72-pin PS/2 SIMM sockets.
- Onboard Flash Disk Option: M-Systems DiskOnChip flash storage option from 1 MB to 12 MB capacity for solid-state boot and data storage.
- Comprehensive I/O Interfaces:
- Two serial ports (1 × RS-232, 1 × configurable RS-232/422/485)
- One parallel port
- Keyboard and mouse connectors
- Ethernet 10Base-T LAN (Realtek RTL8029AS chipset)
- E-IDE HDD and FDD interfaces for standard storage devices
- PC/104 Expansion Connector: Enables modular expansion with PC/104 peripheral modules for additional I/O, communication, or control functions.
- Hardware Watchdog Timer: Ensures system reliability by automatically resetting the system in case of software failure.
- Industrial-Grade Design: Engineered for long-term operation in embedded and industrial environments with extended temperature and vibration tolerance.

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3. Technical Specifications
- Form Factor: Half-size ISA slot CPU card
- Dimensions: 185 mm (L) × 122 mm (W)
- Processor: AMD X5 133 MHz (486-class CPU)
- Chipset: Intel/Chips & Technologies 65550 VGA/LCD controller
- System Memory:
- Type: EDO or Fast Page DRAM
- Capacity: 1 MB to 128 MB
- Sockets: 2 × 72-pin PS/2 SIMM slots
- Storage Options:
- M-Systems DiskOnChip flash disk (1 MB–12 MB)
- E-IDE HDD interface (supports standard IDE hard drives)
- FDD interface (supports standard floppy drives)
- Graphics:
- Controller: Intel C&T 65550
- Display Output: VGA and LCD support
- Resolution: Up to 1024 × 768 (typical for 65550 chipset)
- Networking:
- Ethernet Controller: Realtek RTL8029AS
- Interface: 10Base-T (RJ-45 connector)
- Serial Ports:
- COM1: RS-232
- COM2: Configurable RS-232/422/485
- Parallel Port: 1 × Standard parallel port (SPP/EPP/ECP modes)
- Keyboard/Mouse: PS/2-compatible connectors
- Expansion: PC/104 module connector for stackable expansion
- Watchdog Timer: Programmable hardware watchdog for system recovery
- Power Requirements: Typically +5 V DC (exact current draw dependent on configuration)
- Operating Temperature: Industrial range (typically 0 °C to 60 °C; extended range available on request)
- Weight: Approx. 250–300 g (depending on configuration and installed modules)
- Material: Multi-layer PCB with industrial-grade components

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4. Functionality
The AP-486LH functions as a self-contained embedded computing platform that can be installed into a half-size ISA slot or used as a standalone CPU board in a passive backplane system. It provides the processing, memory, storage, and I/O interfaces required for industrial control, automation, and legacy system integration.

Operation:
- The AMD X5 133 MHz CPU executes system instructions and manages peripheral communication.
- The onboard VGA/LCD controller drives display output to CRT or LCD panels, enabling both graphical and text-based interfaces.
- The integrated Ethernet controller provides network connectivity for data exchange, remote monitoring, or control applications.
- The DiskOnChip flash module allows for solid-state booting, eliminating the need for mechanical drives in rugged environments.
- The PC/104 connector allows additional modules (e.g., data acquisition, serial expansion, digital I/O) to be stacked directly onto the board without external cabling.

Use Cases and Applications:
- Industrial automation controllers and HMIs
- Legacy system upgrades and replacements
- Embedded control systems in manufacturing equipment
- Transportation and logistics control units
- Networked data acquisition systems
- Kiosk and point-of-sale terminals
- Test and measurement instrumentation

Compatibility:
- Compatible with standard ISA backplanes and PC/104 modules
- Supports DOS, Windows 3.x/95/98, and various embedded operating systems (e.g., QNX, VxWorks, or Linux distributions for 486-class CPUs)

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5. Components & Accessories
Included Components:
- AP-486LH CPU card with AMD X5 133 MHz processor
- Integrated VGA/LCD controller (Intel C&T 65550)
- Realtek RTL8029AS Ethernet controller
- Two 72-pin SIMM sockets for memory installation
- PC/104 expansion connector
- E-IDE and FDD connectors
- Serial and parallel port headers
- Keyboard and mouse connectors
- Watchdog timer circuitry

Optional Accessories:
- M-Systems DiskOnChip flash modules (1 MB–12 MB)
- EDO or Fast Page DRAM SIMMs (1 MB–128 MB total)
- PC/104 expansion modules (e.g., additional serial ports, digital I/O, A/D converters)
- Cables and adapters for serial, parallel, and Ethernet connections
- Passive ISA backplane and industrial chassis for system integration

Connectors and Interfaces:
- 2 × 72-pin SIMM sockets
- 1 × RJ-45 Ethernet port
- 2 × Serial port headers (RS-232 and RS-232/422/485)
- 1 × Parallel port header
- 1 × Keyboard connector
- 1 × Mouse connector
- 1 × E-IDE connector
- 1 × FDD connector
- 1 × PC/104 expansion connector

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6. Installation & Setup
Requirements:
- Compatible half-size ISA slot or passive backplane
- +5 V DC power supply (typically provided through the backplane)
- Appropriate cooling and airflow within the chassis

Mounting Options:
- Direct insertion into a half-size ISA slot
- Mounting within an industrial chassis using standoffs or card guides
- Stackable configuration with PC/104 modules for vertical expansion

Configuration Steps:
1. Install the desired memory modules (up to 128 MB total) into the two 72-pin SIMM sockets.
2. Insert the DiskOnChip module (if used) into the designated socket.
3. Connect IDE and FDD cables to corresponding headers for storage devices.
4. Attach display cables to VGA or LCD connectors.
5. Connect keyboard, mouse, and serial/parallel cables as required.
6. Insert the card into the ISA backplane slot and secure it with mounting screws.
7. Power on the system and configure BIOS settings for memory, storage, and I/O parameters.
8. Install the desired operating system and drivers for VGA, LAN, and other peripherals.

Configuration Utilities:
- BIOS setup utility for system configuration
- DOS-based utilities for DiskOnChip initialization and LAN setup
- Optional watchdog timer configuration software

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7. Performance & Capabilities
Processing Performance:
- AMD X5 133 MHz CPU delivers performance comparable to Intel 486DX4-class processors, suitable for real-time control and embedded applications.

Memory Performance:
- EDO DRAM support enhances memory access speed compared to standard Fast Page DRAM.
- Maximum 128 MB capacity allows for multitasking and larger embedded applications.

Graphics Performance:
- Intel C&T 65550 chipset provides hardware-accelerated 2D graphics and LCD panel support.
- Typical resolutions up to 1024 × 768 with 16-bit color depth.

Networking Performance:
- Realtek RTL8029AS 10Base-T Ethernet controller provides reliable 10 Mbps network connectivity.
- Compatible with standard TCP/IP stacks and legacy network protocols.

Storage Performance:
- DiskOnChip flash modules offer fast, solid-state storage with no moving parts.
- E-IDE interface supports standard hard drives for higher capacity storage.

System Reliability:
- Hardware watchdog timer ensures automatic recovery from software hangs.
- Industrial-grade components provide long MTBF and stable operation in harsh environments.

Limitations:
- 486-class CPU limits performance for modern multitasking or high-resolution graphics applications.
- 10Base-T Ethernet speed may be insufficient for high-bandwidth networking.
- Limited flash storage capacity (up to 12 MB) suitable primarily for boot and small OS images.

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8. Standards & Compliance
- Form Factor Compliance: Half-size ISA slot CPU card standard
- Expansion Interface: PC/104 standard (IEEE P996.1 compliant)
- Networking: IEEE 802.3 10Base-T Ethernet standard
- Storage Interfaces: ATA/ATAPI (E-IDE) and standard floppy disk interface
- Serial Communication: RS-232, RS-422, RS-485 standards compliant
- Parallel Port: IEEE 1284 compatible
- EMC/EMI Compliance: Designed to meet industrial EMC standards (FCC Class A, CE industrial environments)
- Environmental Compliance: RoHS (depending on production date and revision)

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9. Additional Information
Warranty:
Typically supplied with a 1-year limited hardware warranty covering manufacturing defects (may vary by distributor or OEM).

Technical Support:
- Manufacturer or distributor provides technical documentation, BIOS updates, and driver support.
- Engineering assistance available for integration into custom systems.

Maintenance:
- Periodic inspection of connectors and contacts recommended for long-term reliability.
- BIOS and firmware updates available for enhanced compatibility and performance.
- Replaceable memory and flash modules allow easy upgrades or replacements.

Product Lifecycle:
- Designed for long-term availability in industrial markets.
- Legacy support ensures continued operation in existing installations.

Documentation and Resources:
- User manual with installation and configuration instructions
- BIOS setup guide
- Driver disks for VGA, LAN, and DiskOnChip utilities
- Mechanical drawings and connector pinouts for system integration

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Summary
The AP-486LH Half Size Slot CPU Card is a robust, feature-rich industrial computing solution built around the AMD X5 133 MHz processor. It integrates essential system components—graphics, networking, memory, and storage—into a compact half-size ISA form factor. With support for EDO DRAM, DiskOnChip flash storage, and PC/104 expansion, it provides a flexible platform for embedded and industrial applications requiring reliability, legacy compatibility, and long-term availability.

Its combination of integrated VGA/LCD controller, Ethernet LAN, multiple serial interfaces, and watchdog timer makes it ideal for automation, control, and monitoring systems where stability and compactness are critical. The AP-486LH continues to serve as a dependable foundation for embedded computing environments that rely on proven 486-class architecture and industrial-grade design.