Specifications

Hardware Configuration
2–5
Jumper
Group Function Default
W1 Video Controller Enable ON
W2 Byte-wide S0 Battery Back-up Power OFF
W3 SCSI Termination Power OFF
W4 Serial 3 IRQ Select (IRQ4, IRQ12) 2/3 (IRQ12)
W5 Serial 4 IRQ Select (IRQ3, IRQ10) 2/3 (IRQ10)
W6 Serial 1 IRQ4 Sharing Pull-down ON
W7 Serial 2 IRQ3 Sharing Pull-down ON
W8 +5V Supply for External RS-485
Interface (Serial 4)
OFF
W9 BIOS Programming Disable ON
W10 Write-back Cache Enable 1/2
(enabled)
W11 Watchdog Timer Output Select
(IOCHCK, Reset)
OFF
W12 SCSI IRQ11 Select 2/3
W13 BIOS Flash EPROM Programming
Power (+12V)
OFF
W14 Byte-wide S0 Configuration (default is
128K SRAM)
7/10, 8/9, 11,12,
14/15
W15 Byte-wide S1 Configuration (default is
29C512 FLASH device)
4/5, 7/8, 10/11,
13/14, 9/12
W16 Floppy Controller DRQ2 Enable ON
W17 Parallel Port IRQ Selection (IRQ5, IRQ7) 1/2 (IRQ7)
W18 -DACK for ECP (Parallel Port) OFF
W19 DRQ for ECP (Parallel Port) OFF
W20 Power Fail Monitor NMI Enable OFF
W21 Byte-wide Backup Battery 2/3
W22 CPU Clock Speed (133MHz version
only)
ON (133MHz)
W23 1/2
W24 SCSI Hardware I/O Address Select OFF
W25 SCSI Enable/Disable ON
Table 2-2 Configuration Jumper Summary