Micron NetFRAME 2100 Series, Руководство по эксплуатации продукта

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The National 87309 device supports two serial ports, one parallel port, diskette drive, PS/2-compatible
keyboard and mouse, and integrated Real Time Clock (RTC). The server board provides a connector
interface for each port.
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Both serial ports are relocatable. By default, port A appears at the onboard DB9 connector and port
B on the 10-pin header. Each serial port can be set to one of four different COMx ports and can be
enabled separately. When enabled, each port can be programmed to generate edge- or level-
sensitive interrupts. When disabled, serial port interrupts are available to add-in boards. In order to
use both ports, you need to connect a ribbon cable from the 10-pin header on the server board to
the I/O panel.
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The 87309 provides one IEEE 1284-compatible 25-pin bidirectional EPP (supporting levels 1.7 and
1.9). BIOS programming of the 87309 registers enable the parallel port and determine the port
address and interrupt. ECP mode is supported with 2 possible DMA channels. When disabled, the
interrupt is available to add-in boards.
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The system board has two full-length ISA bus connectors. One of the connectors shares a chassis
expansion slot with a PCI connector. ISA features:
•
Bus speed up to 8.33 MHz
•
16-bit memory addressing
•
Type A transfers at 5.33 Mbps
•
Type B transfers at 8 Mbps
•
8- or 16-bit data transfers
•
Plug and Play ready
The system board has four full-length PCI connectors. One of the connectors shares a chassis expansion
slot with an ISA connector. PCI features:
•
Bus speed up to 33 MHz
•
32-bit memory addressing
•
5 V signaling environment
•
Burst transfers of up to 133 Mbps
•
8-, 16-, or 32-bit data transfers
•
Plug and Play ready
•
Parity enabled