Quick Reference Guide

SP 5200XS Series
Quick Reference Guide

Jumper & Switch Settings

SP 5200XS Series Board Layout & End Bracket

Switch Settings

S1, Switch 1 and 2 - Supervisory Interrupt

The IES (Intelligent Environmental Sensor) module in the Density System communicates with the SP processors in the system via a hardware interrupt which is configurable as either IRQ 10 or IRQ 15. The interrupt is set with switch 1.

Note: The SP Series includes a secondary IDE controller for the Density System CD-ROM Drive. If this controller is enabled in the BIOS, it will use IRQ 15. If using the IES Supervisory System, its Interrupt must then be set to IRQ 10.

S1, Switch 3 - PS/2 Mouse IRQ

A PS/2 style mouse port is included on each SP processor. The mouse is connected to the SP board via the Density System multiplexer. If a mouse is not used, the port can be disabled to release the interrupt.

S1, Switch 4 - Not Used

Table 2-1, S1 Switch Settings

Function	1	2	3	4
Supervisory Interrupt IRQ 10	on	off
Supervisory Interrupt IRQ 15 *	off	on
No Supervisory Interrupt	off	off
PS/2 Mouse on IRQ 12 *			on
PS/2 Mouse on IRQ 12 Disabled			off
*Factory Settings (sw4 - not used)	on	off	on

Jumper Settings

The figure above shows the connector, switch and jumper locations on the board. Table 2-2 defines the jumper settings.

JP5 - Ethernet

The on-board DEC 21140 PCI Fast Ethernet (10/100 Mbps) controller can be disabled in the system BIOS and via hardware with jumper JP5.

JP3 - SCSI

The on-board Symbios 895 Ultra Fast/Wide SCSI controller can be enabled or disabled in the system BIOS and via hardware with jumper JP3.

Table 2-2, Jumpers

Jumper	Function	Jumper On Pins 1-2	Jumper On Pins 2-3
JP5	Ethernet	Enabled	Disabled
JP3	SCSI	Enabled	Disabled

JP7, JP8, & JP9 - CPU Voltage And Speed (Do Not Change)

Memory Configuration & Management

All SP Series memory is provided in 168 pin, 72 bit standard 60ns buffered DIMMs. DIMMs do not need to be installed in pairs, and different sizes may be mixed on a SP. Table 4-1 shows the Memory map for the SP processor. Table 4-2 defines the boards I/O configuration.

Click here for the DIMM Memory Configuration Table

Table 4-1, Memory Map

Memory Range	Size	Use
00000-9FFFF	640KB	Conventional Memory
A0000-AFFFF	64KB	VGA Graphics Buffer
B0000-B7FFF	32KB	MDA Text Buffer
B8000-BFFFF	32KB	VGA/CGA Text Buffer
C0000-C7FFF	32KB	VGA Bios
C8000-DFFFF	96KB	Available
E0000-FFFFF	127KB	System & PCI BIOS

Table 4-2, I/O Map

ISA Ports	Description
0000-00FF	Various "AT" functions in ISP chip and keyboard controller
01F0-01F7	IDE hard drive interface
02F8-02FF	COM2
03A0	Cubix supervisory interface
03A8-03AF	IES serial port
03B4-03B5	VGA
03BC-03BF	LPT1
03C0-03CF	VGA
03D4-03D5	VGA
03F0-03F7	Floppy / IDE
03F8-03FF	COM1

System Interrupts

The 16 system hardware interrupts on the SP are represented in Table 4 - 4. Interrupts are managed by two standard 8259A Programmable Interrupt Controllers (PICs). Interrupts at IRQ 0 through 7 are located on the main PIC; IRQ 8 through 15 are on the SLAVE PIC.

Table 4-3, System Interrupts

IRQ	Description	IRQ	Description
0	Timer clock	8	Real Time Clock
1	Keyboard	9	Redirected IRQ 2
2	Second OIC controller	10	Set By PCI Plug & Play at boot time
3	COM2	11	Set By PCI Plug & Play at boot time
4	COM1	12	Available (or PS/2 Mouse)
5	Set By PCI Plug & Play at boot time	13	Math Coprocessor
6	Floppy Disk Controller	14	Primary IDE Controller
7	LPT1	15	Secondary IDE Controller (or IES)