Ampro Corporation P5X 用户手册

3–2

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512 bits available for OEM use

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Watchdog Timer

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Selectable Timeout: 30 seconds / 60 seconds / 90 seconds / Disabled

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Timeout triggers hardware reset

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Powerfail NMI triggers when +5 Volt power drops below +4.7 Volts.

On-board Peripherals

This section describes standard peripherals found on every Little Board/P5x.

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Four buffered serial ports with full handshaking

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Implemented with 16550-equivalent controllers with built-in 16-byte FIFO buffers

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On-board generation of RS-232C signal levels

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Serial 1 supports either RS-232C or RS-485

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Logged as COM1, COM2, COM3, and COM4 by DOS

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Serial 1/Serial 3 and Serial2/Serial4 share interrupts (IRQs)

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Multi-mode Parallel Port

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Superset of standard LPT printer port

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Bi-directional data lines

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IEEE-1284 (EPP/ECP) compliant

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Standard hardware supports all four IEEE-1284 protocol modes

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Internal 16-byte FIFO buffer

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DMA option for data transfers

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Floppy Disk Controller

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Supports one or two drives

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Reliable digital phase-locked loop circuit

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BIOS supports all standard PC/AT formats: 360K, 1.2M, 720K, and 1.44M

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PCI EIDE Disk Controllers

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PCI bus implementation of Extended IDE (EIDE) hard disk controllers (2)

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Supports up to four hard disk drives.

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Fast ATA-capable interface supports high-speed PIO modes

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BIOS supports drives larger than 528 M bytes through Logical Block Addressing (LBA)

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Supports Compact Flash interface

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PCI UltraSCSI Interface

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ANSI X3.131-compliant

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Uses the Adaptec AIC 7860 controller

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Synchronous or asynchronous data transfer