The Asus/Aaeon SBC-455 is a half-size, PC/AT-compatible ISA-bus single board computer designed for embedded and industrial applications. This compact CPU card integrates a 486-class processor with an on-board SVGA controller supporting both flat panel and CRT displays, delivering a complete computing platform on a single module.
## Technical Specifications
• **Processor:** Accepts Intel, AMD, Cyrix, or compatible 486 processors including 80486SX/DX-25/33, DX2-50/66, DXL2-80, or DX4-100 MHz variants. On-chip cache: 16 KB; second-level cache: 128 KB on-board.
• **Chipset:** ALi M1489/M1487 (FinALi-486 PCI); CHIPS 65548 graphics controller.
• **Memory:** Up to 64 MB on-board DRAM via two 72-pin SIMM sockets. Supports 5 V EDO DRAM and 72-pin FPM modules.
• **BIOS:** AMI Flash BIOS and AWARD BIOS support.
• **Operating Temperature:** 0°C to 60°C.
## Key Features
• **Video Output:** Integrated 32-bit PCI SVGA controller with up to 1 MB video memory. Delivers 32-bit graphic throughput at up to 33 MHz. Supports resolutions to 1024 × 768 in 256 colors. Compatible with TFT, STN, B/W, and EL flat panel displays, as well as standard CRT monitors. Daughterboard support for various flat panel types.
• **IDE Interface:** On-board PCI Enhanced IDE controller supporting two IDE devices. ATA PIO modes 3 and 4 with data transfer rates exceeding 11 MB/second. Features 4-layer 32-bit posted write and read-prefetch buffers.
• **Serial Communication:** Two high-speed RS-232 ports with 16C550 UARTs and 16-byte FIFO, supporting up to 115 Kbps. Configurable IRQ assignment and COM port mapping.
• **Parallel Port:** One Enhanced Bidirectional Parallel Port supporting SPP/EPP/ECP modes.
• **Additional I/O:** On-board floppy drive controller; keyboard and PS/2 mouse connectors.
• **Power Management:** Green Function support with CMOS Clear functionality.
• **Expansion:** PC/104 module connectors for system expansion.
## Typical Applications
Industrial control systems, embedded visualization platforms, point-of-sale terminals, and ruggedized computing environments requiring compact form factors with integrated display capabilities.
## Compatibility & Integration
PC/AT ISA-bus architecture enables integration into legacy industrial systems. PCI chipset and standard IDE/serial/parallel interfaces ensure compatibility with conventional peripherals and software environments.
