1. Product Overview
Product Name: F845A
Model Number: F845A
Series: 986 Full-Size Slot CPU Board Series
Article Number: F845A
Manufacturer: (Not explicitly stated; typically produced by an industrial computing hardware manufacturer specializing in embedded and slot CPU boards compatible with PICMG and PC/104 standards.)

The F845A is a full-size industrial slot CPU board designed for embedded and industrial computing applications. It integrates an Intel Pentium VI processor (Socket 478, FCPGA) with the Intel 845 chipset, providing a balanced combination of processing performance, integrated graphics, and versatile I/O connectivity. The board supports up to 3 GB of system memory, dual Ethernet interfaces, and multiple expansion buses, making it suitable for industrial automation, control systems, and legacy-compatible embedded computing environments.

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2. Key Features
- Processor Support: Intel Pentium VI CPU, Socket 478, FCPGA package, operating at 1.6 GHz to 2.4 GHz with a 400 MHz front-side bus (FSB400).
- Chipset: Intel 845 chipset, providing stable performance and compatibility with legacy and modern peripherals.
- Memory Capacity: Supports up to 3 GB of SDRAM via three DIMM sockets, allowing flexible memory configurations for demanding applications.
- Integrated Graphics: Onboard VGA controller with 8 MB ATI Mobile M6 graphics memory, suitable for standard display output and industrial HMI interfaces.
- Networking: Dual 10/100 Mbps Ethernet interfaces powered by Intel 82559 and Intel 82562EM controllers, enabling redundant or segmented network configurations.
- Storage Interfaces: IDE interface supporting HDD and FDD devices (ATA100 standard), ensuring compatibility with legacy storage media.
- Peripheral Connectivity:
- Two serial ports (16550 UART compatible)
- One parallel port supporting SPP/EPP/ECP modes
- PS/2 mouse and keyboard connectors
- System Monitoring: Integrated watchdog timer adjustable from 0 to 30 seconds for system reliability and automatic recovery.
- Expansion Buses: Fully compliant with PICMG, PC/104, and ISA bus standards, allowing integration with a wide range of industrial I/O and expansion modules.
- Form Factor: Full-size slot CPU board with dimensions of 338 mm × 122 mm, designed for industrial backplane systems.

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3. Technical Specifications
- Processor: Intel Pentium VI (Socket 478, FCPGA)
- Clock Speed: 1.6 GHz – 2.4 GHz
- Front-Side Bus: 400 MHz (FSB400)
- Chipset: Intel 845
- Memory:
- Maximum Capacity: 3 GB
- Memory Type: SDRAM
- Memory Slots: 3 × DIMM sockets
- Graphics:
- Controller: ATI Mobile M6
- Video Memory: 8 MB
- Output: VGA
- Networking:
- LAN 1: Intel 82559, 10/100 Mbps Ethernet
- LAN 2: Intel 82562EM, 10/100 Mbps Ethernet
- Storage Interfaces:
- IDE (ATA100) for HDD
- FDD interface
- I/O Ports:
- 2 × Serial ports (16550 compatible)
- 1 × Parallel port (SPP/EPP/ECP modes)
- 1 × PS/2 keyboard port
- 1 × PS/2 mouse port
- Watchdog Timer: 0 – 30 seconds adjustable
- Expansion Buses:
- PICMG standard slot interface
- PC/104 expansion connector
- ISA bus compatibility
- Form Factor: Full-size slot CPU board
- Dimensions: 338 mm (L) × 122 mm (W)
- Weight: (Not specified; typically around 0.8 – 1.2 kg depending on configuration)
- Material: Multi-layer PCB with industrial-grade components

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4. Functionality
The F845A functions as a central processing unit board for industrial computer systems that utilize a backplane architecture. It is designed to be inserted into a PICMG-compatible slot, where it interfaces with peripheral and expansion cards through the backplane. The board’s Intel Pentium VI processor and Intel 845 chipset deliver stable performance for control, monitoring, and data processing tasks.

Use Cases and Applications:
- Industrial automation controllers and machine interfaces
- Embedded computing systems requiring legacy I/O support
- Networked control systems with dual LAN redundancy
- Human–machine interface (HMI) terminals with integrated VGA output
- Data acquisition and process control systems
- Industrial PCs requiring PC/104 or ISA expansion modules

Compatibility:
- Compatible with PICMG 1.0/1.3 backplanes
- Supports PC/104 expansion modules for additional I/O or communication interfaces
- Works with standard IDE HDDs and FDDs
- Supports standard PS/2 input devices and VGA monitors

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5. Components & Accessories
Included Components:
- F845A full-size slot CPU board
- Integrated Intel Pentium VI processor (Socket 478)
- Onboard ATI Mobile M6 VGA controller
- Dual Intel Ethernet controllers (82559 & 82562EM)
- Three DIMM sockets for memory installation
- IDE and FDD connectors
- Serial and parallel port headers
- PS/2 keyboard and mouse connectors
- Watchdog timer circuitry

Optional Accessories (typical for this class of product):
- Memory modules (up to 3 GB total)
- IDE HDD or CompactFlash adapter
- PC/104 expansion modules (e.g., digital I/O, serial expansion, fieldbus interfaces)
- Cooling fan or passive heat sink for CPU
- Backplane and chassis compatible with PICMG 1.0 standard
- Power supply unit supporting AT/ATX configurations

Connectors:
- Edge connector for PICMG backplane interface
- PC/104 stackable connector
- Standard pin headers for serial, parallel, and PS/2 ports
- IDE 40-pin and FDD 34-pin connectors

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6. Installation & Setup
Requirements:
- Compatible PICMG 1.0 or 1.3 industrial backplane
- AT or ATX power supply depending on system configuration
- Adequate chassis ventilation or cooling solution for CPU thermal management

Mounting Options:
- Designed for insertion into a full-size slot within an industrial chassis
- Secured using standard mounting screws and standoffs
- Compatible with rackmount or desktop industrial enclosures

Configuration:
- Memory modules installed in DIMM sockets (up to 3 GB total)
- IDE and FDD devices connected via ribbon cables
- Network interfaces configured via BIOS or operating system network settings
- Watchdog timer enabled and configured through BIOS or software utility
- VGA output connected to standard display monitor
- PS/2 ports connected to keyboard and mouse

Setup Process:
1. Insert the F845A board into the designated PICMG slot on the backplane.
2. Connect power supply and peripheral cables.
3. Install memory modules and storage devices.
4. Connect display, keyboard, and mouse.
5. Power on the system and enter BIOS setup to configure CPU, memory, and I/O parameters.
6. Install operating system and necessary drivers for chipset, VGA, and LAN controllers.

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7. Performance & Capabilities
Processing Performance:
The Intel Pentium VI processor operating between 1.6 GHz and 2.4 GHz provides sufficient computational power for industrial control, data processing, and embedded applications. The 400 MHz front-side bus ensures stable communication between CPU, memory, and chipset components.

Memory Performance:
With three DIMM sockets supporting up to 3 GB of SDRAM, the board can handle multitasking and moderate data-intensive workloads typical in industrial environments.

Graphics Performance:
The integrated ATI Mobile M6 VGA controller with 8 MB of dedicated video memory supports standard display resolutions suitable for control panels, operator interfaces, and diagnostic screens.

Networking Capabilities:
Dual 10/100 Mbps Ethernet ports allow for network redundancy, load balancing, or separation of control and data networks. The use of Intel 82559 and 82562EM controllers ensures reliable connectivity and driver support across multiple operating systems.

Storage and I/O Performance:
The IDE ATA100 interface supports data transfer rates up to 100 MB/s, sufficient for legacy HDDs and optical drives. The inclusion of serial and parallel ports ensures compatibility with industrial peripherals such as PLCs, barcode scanners, and printers.

Reliability and Stability:
The integrated watchdog timer (0–30 s) enhances system reliability by automatically resetting the system in case of software or hardware failure. The use of industrial-grade components ensures long-term stability in harsh environments.

Limitations:
- Limited to 400 MHz FSB and SDRAM memory, which may not match modern DDR-based systems.
- VGA controller with 8 MB memory is suitable for 2D graphics but not for high-end visualization.
- IDE and FDD interfaces are legacy standards, limiting compatibility with newer SATA devices.

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8. Standards & Compliance
- PICMG Compliance: Fully compliant with PICMG 1.0/1.3 industrial backplane standards, ensuring interoperability with a wide range of chassis and peripheral cards.
- PC/104 Compatibility: Supports PC/104 expansion modules for modular system design.
- ISA Bus Support: Provides backward compatibility with ISA-based expansion cards.
- Ethernet Standards: IEEE 802.3 10/100 Mbps Ethernet compliance.
- Serial Communication: RS-232 standard via 16550-compatible UARTs.
- Parallel Port: IEEE 1284 compliant (SPP/EPP/ECP modes).
- Electrical and Safety Compliance: Designed to meet industrial-grade EMC and safety standards (specific certifications not listed but typically CE and FCC Class A).
- Environmental Standards: Built for industrial temperature and vibration tolerance (exact range not specified).

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9. Additional Information
Warranty:
Typically supplied with a standard manufacturer’s warranty covering defects in materials and workmanship (duration varies by vendor, commonly 1–3 years).

Technical Support:
Comprehensive technical documentation, BIOS updates, and driver downloads are generally provided by the manufacturer. Support channels include online resources, email, and direct engineering assistance for integration and troubleshooting.

Maintenance:
- Regular cleaning of connectors and ventilation areas recommended.
- BIOS and firmware updates should be applied as released to maintain compatibility and stability.
- Periodic inspection of capacitors and connectors for wear in long-term industrial deployments.

Software and Firmware Updates:
- BIOS updates available for CPU and memory compatibility improvements.
- Driver packages for Intel chipset, ATI VGA, and Intel LAN controllers available for major operating systems (Windows, Linux, and embedded OS variants).

Lifecycle and Availability:
As an industrial-grade product, the F845A is typically offered with long-term availability and revision control to support extended production cycles and system maintenance.

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### Summary
The F845A full-size slot CPU board is a robust, legacy-compatible industrial computing solution built around the Intel Pentium VI processor and Intel 845 chipset. With support for up to 3 GB of SDRAM, integrated ATI Mobile M6 VGA graphics, dual Intel Ethernet controllers, and a comprehensive set of I/O interfaces, it provides a balanced platform for industrial automation, embedded control, and networked system applications. Its compliance with PICMG, PC/104, and ISA standards ensures broad compatibility with existing infrastructure, while its watchdog timer and industrial-grade design deliver reliability in mission-critical environments.

Dimensions: 338 mm × 122 mm | CPU: Intel Pentium VI 1.6–2.4 GHz | Chipset: Intel 845 | Memory: Up to 3 GB SDRAM | Graphics: ATI Mobile M6 8 MB | LAN: Dual 10/100 Mbps Intel 82559 & 82562EM | Expansion: PICMG / PC/104 / ISA | Watchdog: 0–30 s

This combination of performance, connectivity, and legacy support makes the F845A an ideal choice for OEMs and system integrators seeking a reliable, long-life industrial computing platform.