Chapter 4. Technical Reference

This section includes:

Baseboard Connectors

Figure 4-1 shows connector locations on the baseboard. This section provides pin information about the connectors.

Figure 4-1. Baseboard Layout


The baseboard (processor board) components are:

  1. Wide SCSI B connector (J9J1)

  2. System jumpers (J6J1)

  3. Hard drive input LED connector (J6J3)

  4. System speaker connector (J6J2)

  5. Lithium battery (B4H1)

  6. Wake on LAN technology connector (J4H1)

  7. ISA slot (J1J1)

  8. PCI slots B4 (closest to ISA), B3, B2, B1, A3, and A2 (farthest from ISA)

  9. Memory module connector (J3G1)

  10. ICMB connector (J1E1)

  11. PCI slot A1 (J2D1)

  12. Video and parallel port connectors (J1C1)

  13. Serial port connector (J1B2)

  14. Keyboard and mouse connectors (J1B1)

  15. USB external connector (J1A1)

  16. VRM connector for processor 4 (J4E1)

  17. VRM connector for processors 4 and 3 (J4C2)

  18. VRM connector for processor 3 (J4C1)

  19. VRM connector for processor 2 (J4B1)

  20. VRM connector for processors 2 and 1 (J4A2)

  21. VRM connector for processor 1 (J4A1)

  22. Processor 1 Slot 2 connector (J9A1)

  23. Main power connector, primary (J9B1)

  24. Processor 2 Slot 2 connector (J9B2)

  25. Processor 3 Slot 2 connector (J9D1)

  26. Main power connector, secondary (J9D2)

  27. Front panel connector (J8E1)

  28. Processor 4 Slot 2 connector (J9E1)

  29. IDE connector (J9E2)

  30. Diskette drive connector (J9E3)

  31. Auxiliary power connector (J9E4)

  32. USB internal header (JC9F14)

  33. SMBus connector (J9F2)

  34. F16 expansion connector (J7G1)

  35. ITP connector (J6G1)

  36. Narrow SCSI connector (J9H1)

  37. External IPMB connector (J7H1)

  38. SMM connector (J8H1)

  39. Wide SCSI A connector (J9H2)

Main Power Connector

Figure 4-2 shows the pins on the main power connector. Table 4-1 lists the pin signal and color.

Figure 4-2. Main Power Connector Pins


Table 4-1. Main Power Connector Pinouts

Pin

Signal

Wire Color

1

+3.3 VDC

Orange

2

+3.3 VDC

Orange

3

+3.3 VDC

Orange

4

COM

Black

5

COM

Black

6

COM

Black

7

COM

Black

8

+12 VDC

Yellow

9

+12 VDC

Yellow

10

+12 VDC

Yellow

11

+3.3 VDC

Orange

12

+3.3 VDC

Orange

13

+3.3 VDC

Orange

14

COM

Black

15

COM

Black

16

COM

Black

17

+5V Standby

Purple

18

+5 VDC

Red

19

+5 VDC

Red

20

+5 VDC

Red


Auxiliary Power

Figure 4-3 shows the auxiliary power connector. Table 4-2 lists the pin number and signal for each pin.

Figure 4-3. Auxiliary Power Connector


Table 4-2. Auxiliary Power Connector Pinouts

Pin

Signal

1

RTN_RS

2

5V_RS

3

3.3V_RS

4

FAN_SPEED

5

I2CSCL

6

I2CSDA

7

GND

8

SYS_PGOOD

9

PS_ON

10

GND

11

-12VCC

12

Key

13

12V_RS

14

GND


Diskette Drive

Figure 4-4 shows the diskette drive connector. Table 4-3 lists the diskette drive connector pinouts.

Figure 4-4. Diskette Drive Connector


Table 4-3. Diskette Drive Connector Pinouts

Pin

Signal

1

GND

2

FD_DENSEL

3

GND

4

N/C

5

Key

6

FD_DRATE0

7

GND

8

FD_INDEX_L

9

GND

10

FD_MTR0_L

11

GND

12

FD_DR1_L

13

GND

14

FD_DR0_L

15

GND

16

FD_MTR1_L

17

FD_MSEN1

18

FD_DIR_L

19

GND

20

FD_STEP_L

21

GND

22

FD_WDATA_L

23

GND

24

FD_WGATE_L

25

GND

26

FD_TRK0_L

27

FD_MSEN0

28

FD_WPROT_L

29

GND

30

FD_RDATA_L

31

GND

32

FD_HDSEL_L

33

GND

34

FD_DSKCHG_L


Front Panel Connector

A 30-pin connector attaches to the chassis front panel containing reset, NMI, sleep, and power control switches, LED indicators, and IPMB connection. Figure 4-5 shows the front panel connector. Table 4-4 lists the front panel connector pins and signals.

Figure 4-5. Front Panel Connector


Table 4-4. Front Panel Connector Pinouts

Pin

Signal

1

SPEAKER_OUT

2

GND

3

CHASSIS_INTRUSI ON

4

FP_HD_ACT_L

5

+5V

6

SLEEP_CNTRL_l

7

FAN_FAILED_L

8

POWER_LED_L

9

POWER_FAULT_L

10

GND

11

I2C_SDA

12

NMI_FP_L

13

I2C_SCL

14

RST_FP_L

15

+5V standby

16

PWR_CNTRL_FP_L

17

FP_ISOL

18

GND

19

FAN_TACH(0)

20

FAN_TACH(1)

21

FAN_TACH(2)

22

FAN_TACH(3)

23

FAN_TACH(4)

24

FAN_TACH(5)

25

FAN_TACH(6)

26

FAN_TACH(7)

27

CLUSTER_LED

28

reserved

29

reserved

30

reserved


The SMM Connector

Figure 4-6 shows the server management module (SMM) connector. Table 4-5 lists the SMM connector pinouts.

Figure 4-6. Server Management Module (SMM) Connector


Table 4-5. Server Management Module Connector Pinouts

Pin

Signal

Description

1

CPU_SMI_L

System Management Interrupt

2

LOCAL_I2C_SCL

IPMB clock line

3

GND

Ground

4

Reserved

N/A

5

PWR_CNTRL_SFC_L

Host power supply on/off control

6

LOCAL_I2C_SDA

IPMB serial data line

7

5VSTNDBY

+5V standby indication (power OK)

8

KEYLOCK_SFC_L

Keyboard lock signal

9

CPU_NMI

Nonmaskable interrupt indication

10

VCC3

3.3V power supply status input

11

RST_SFC_L

Baseboard reset signal from Server Monitor Module

12

GND

Ground

13

GND

Ground

14

Reserved

N/A

15

SECURE_MODE_BMC

Secure mode indication

16

GND

Ground

17

SFC_CHASSIS_INSTRUSION_L

Chassis intrusion indication

18

Reserved

N/A

19

Reserved

N/A

20

GND

Ground

21

Reserved

N/A

22

Reserved

N/A

23

Reserved

Not used

24

Reserved

N/A

25

Key pin (N/C)

Connector key

26

Reserved

N/A


The IPMB Connector

Figure 4-7 shows the IPMB connector. Table 4-6 lists the IPMB pins and signals.

Figure 4-7. The IPMB Connector


Table 4-6. IPMB Connector Pinouts

Pin

Signal

1

LOCAL_I2C_SCL

2

GND

3

LOCAL_I2C_SDA


VGA Video Port Connector

Figure 4-8 shows the system's VGA connector. Table 4-7 lists the pinouts for the VGA connector.

Figure 4-8. VGA Video Port Connector


Table 4-7. Video Port Connector Pinouts

Pin

Signal

1

Red

2

Green

3

Blue

4

N/C

5

GND

6

GND

7

GND

8

GND

10

GND

11

NC

12

DDCDAT

13

HSYNC

14

VSYNC

15

DDCCLK


Keyboard and Mouse

Figure 4-9 shows the keyboard and mouse connector. Table 4-8 lists the connector pinouts for the keyboard and mouse connectors.

Figure 4-9. Keyboard and Mouse Connector


The PS/2-compatible connectors share a common housing, but they are functionally equivalent.

Table 4-8. Keyboard and Mouse Connector Pinouts

Pin

Keyboard signal

Mouse signal

1

KEYDAT

MSEDAT

2

NC

NC

3

GND

GND

4

FUSED_VCC (+5 V)

FUSED_VCC (+5 V)

5

KEYCLK

MSECLK

6

NC

NC


Parallel Port

Figure 4-10 shows the parallel port connection. Table 4-9 describes the parallel port connector pin signals.

Figure 4-10. Parallel Port Connector


Table 4-9. Parallel Port Connector Pinout

Pin

Signal

1

STROBE_L

2

Data bit 0

3

Data bit 1

4

Data bit 2

5

Data bit 3

6

Data bit 4

7

Data bit 5

8

Data bit 6

9

Data bit 7

10

ACK_L

11

Busy

12

PE

13

SLCT

14

AUFDXT_L

15

ERROR_L

16

INIT_L

17

SLCTIN_L

18-25

GND


Serial Ports A and B

Figure 4-11 shows the external serial port connector. Table 4-10 lists the serial port connector pin signals and functional descriptions.

Figure 4-11. Serial Port A (External) Connector


Table 4-10. Serial Port A (External) Connector Pinout

Pin

Signal

Description

1

DCD

Data carrier detected

2

RXD

Receive data

3

TXD

Transmit data

4

DTR

Data terminal ready

5

GND

Ground

6

DSR

Data set ready

7

RTS

Request to send

8

CTS

Clear to send

9

RIA

Ring indication active


Universal Serial Bus

The server provides a single, external Universal Serial Bus (USB) connector at the back panel (see Figure 4-12) and an internal header to be used with device bay expansion. Table 4-11 lists the pinouts for the external USB connector. Table 4-12 lists the pinouts for the internal USB header.

Figure 4-12. USB External Connector


Table 4-11. USB External Connector Pinout

Pin

Signal

Notes

1

VCC

Cable power

2

Data -

Data (differential pair negative)

3

Data +

Data (differential pair positive)

4

GND

Cable ground


Table 4-12. USB Internal Header Pinout

Pin

Signal

Notes

1

 

N/C

2

Data -

Data (differential pair negative)

3

Data +

Data (differential pair positive)

4

GND

Cable ground


Narrow SCSI Connector

Figure 4-13 shows the server's narrow SCSI connector. Table 4-13 lists the narrow SCSI connection pinouts.

Figure 4-13. Narrow SCSI Connector


Table 4-13. Narrow SCSI Connector Pinouts

Pin

Signal

1

GND

2

SCD0_L

3

GND

4

SCD1_L

5

GND

6

SCD2_L

7

GND

8

SCD3_L

9

GND

10

SCD4_L

11

GND

12

SCD5_L

13

GND

14

SCD6_L

15

GND

16

SCD7_L

17

GND

18

SCDP_L

19

GND

20

GND

21

GND

22

GND

23

RESERVED

24

RESERVED

25

NC

26

TERMPWR

27

RESERVED

28

RESERVED

29

GND

30

GND

31

GND

32

SATN_L

33

GND

34

GND

35

GND

36

SBSY_L

37

GND

38

SACK_L

39

GND

40

SRESET_L

41

GND

42

SMSG_L

43

GND

44

SSEL_L

45

GND

46

SCD_L

47

GND

48

SREQ_L

49

GND

50

SIO_L


Wide SCSI Connector

Figure 4-14 shows the wide SCSI connector. Table 4-14 lists the wide SCSI pinouts and signal descriptions.

Figure 4-14. Wide SCSI Connector


Table 4-14. Wide SCSI Connector Pinouts

Pin

Signal

1-16

GND

17

TERMPWR

18

TERMPWR

19

Reserved

20-34

GND

35

DB12_L

36

DB13_L

37

DB14_L

38

DB15_L

39

DBP1_L

40

DB0_L

41

DB1_L

42

DB2_L

43

DB3_L

44

DB4_L

45

DB5_L

46

DB6_L

47

DB7_L

48

DBP _L

49-50

GND

51

TERMPWR

52

TERMPWR

53

Reserved

54

GND

55

ATN_L

56

GND

57

BSY_L

58

ACK_L

59

RST_L

60

MSG_L

61

SEL_L

62

C/D_L

63

REQ_L

64

I/O_L

65

DB8_L

66

DB9_L

67

DB10_L

68

DB11_L


Internal IDE Connector

Figure 4-15 shows the server's internal IDE connector. Table 4-15 lists the connectors and signals for the internal IDE connector. If no IDE drives are present, no IDE cable should be connected. If only one IDE drive is installed, it must be connected at the end of the cable.

Figure 4-15. Internal IDE Connector


Table 4-15. IDE Connector Pinouts

Pin

Signal

1

RESET_L

2

GND

3

DD7

4

DD8

5

DD6

6

DD9

7

DD5

8

DD10

9

DD4

10

DD11

11

DD3

12

DD12

13

DD2

14

DD13

15

DD1

16

DD14

17

DD0

18

DD15

19

GND

20

Keyed

21

IDEDRQ

22

GND

23

DIOW_L

24

GND

25

DIOR_L

26

GND

27

IORDY

28

CSEL (1 KΩ p/d)

29

IDEDAK_L

30

GND

31

IDEIRQ

32

Reserved (N/C)

33

IDESA1

34

PDIAG_L (tied to GND)

35

IDESA0

36

IDESA2

37

IDECS1_L

38

IDECS3_L

39

IDEHDACT_L

40

GND


The Hard Drive LED Connector

Figure 4-16 shows the hard drive LED connector. Table 4-16 lists the pins and signals for the hard drive LED connector.

Figure 4-16. Hard Drive LED Connector


Table 4-16. Hard Drive LED Connector Pinouts

Pin

Signal

1

N/C

2

HD_LED_HDR_L

3

HD_LED_HDR_L

4

N/C


ISA Connector Pinouts

Table 4-17 lists the ISA connector pinouts and signal names.

Table 4-17. ISA Connector Pinouts

Pin

Signal

A1

IOCHK_L

A2

SD7

A3

SD6

A4

SD5

A5

SD4

A6

SD3

A7

SD2

A8

SD1

A9

SD0

A10

IOCHRDY

A11

AEN

A12

SA19

A13

SA18

A14

SA17

A15

SA16

A16

SA15

A17

SA14

A18

SA13

A19

SA12

A20

SA11

A21

SA10

A22

SA9

A23

SA8

A24

SA7

A25

SA6

A26

SA5

A27

SA4

A28

SA3

A29

SA2

A30

SA1

A31

SA0

B1

GND

B2

RESET

B3

+5V

B4

IRQ9

B5

-5V

B6

DRQ2

B7

-12V

B8

SRDY_L

B9

+12V

B10

GND

B11

SMEMW_L

B12

SMEMR_L

B13

IOW_L

B14

IOR_L

B15

DACK3_L

B16

DRQ3

B17

DACK1_L

B18

DRQ1

B19

REFRESH_L

B20

BCLK

B21

IRQ7

B22

IRQ6

B23

IRQ5

B24

IRQ4

B25

IRQ3

B26

DACK2_L

B27

TC

B28

BALE

B29

+5V

B30

OSC

B31

GND

Connector key

 

C1

SBHE_L

C2

LA23

C3

LA22

C4

LA21

C5

LA20

C6

LA19

C7

LA18

C8

LA17

C9

MEMR_L

C10

MEMW_L

C11

SD8

C12

SD9

C13

SD10

C14

SD11

C15

SD12

C16

SD13

C17

SD14

C18

SD15

Connector key

 

D1

MEMCS16_L

D2

IOCS16_L

D3

IRQ10

D4

IRQ11

D5

IRQ12

D6

IRQ15

D7

IRQ14

D8

DACK0_L

D9

DRQ0

D10

DACK5_L

D11

DRQ5

D12

DACK6_L

D13

DRQ6

D14

DACK7_L

D15

DRQ7

D16

+5V

D17

MASTER16_L

D18

GND


The PCI Connectors

Table 4-18 provides the PCI connector pinouts and lists the signal value.


Note: The baseboard does not provide a PCI 3.3 V power connector. Only the 5 V PCI signaling environment is supported, and no power is available at the 3.3 V signal pins in expansion slots.


Table 4-18. PCI Connector Pinouts

Pin

Signal

A1

TRST_L

A2

+12 V

A3

TMS

A4

TDI

A5

+5 V

A6

INTA_L

A7

INTC_L

A8

+5 V

A9

Reserved

A10

+5 V

A11

Reserved

A12

GND

A13

GND

A14

Reserved

A15

RST_L

A16

+5 V

A17

GNT_L

A18

GND

A19

Reserved

A20

AD30

A21

+3.3 V *

A22

AD28

A23

AD26

A24

GND

A25

AD24

A26

IDSEL

A27

+3.3 V *

A28

AD22

A29

AD20

A30

GND

A31

AD18

A32

AD16

A33

+3.3 V *

A34

FRAME_L

A35

GND

A36

TRDY_L

A37

GND

A38

STOP_L

A39

+3.3 V *

A40

SDONE

A41

SBO_L

A42

GND

A43

PAR

A44

AD15

A45

+3.3 V *

A46

AD13

A47

AD11

A48

GND

A49

AD9

A50

KEY

A51

KEY

A52

C/BE0_L

A53

+3.3 V *

A54

AD6

A55

AD4

A56

GND

A57

AD2

A58

AD0

A59

+5 V

A60

REQ64_L

A61

+5 V

A62

+5 V

B1

-12 V

B2

TCK

B3

GND

B4

TD0 (NC)

B5

+5 V

B6

+5 V

B7

INTB_L

B8

INTD_L

B9

PRSNT1_L

B10

Reserved

B11

PRSNT2_L

B12

GND

B13

GND

B14

Reserved

B15

GND

B16

PCICLK

B17

GND

B18

REQ_L

B19

+5 V

B20

AD31

B21

AD29

B22

GND

B23

AD27

B24

AD25

B25

+3.3 V *

B26

C/BE3_L

B27

AD23

B28

GND

B29

AD21

B30

AD19

B31

+3.3 V *

B32

AD17

B33

C/BE2_L

B34

GND

B35

IRDY_L

B36

+3.3 V *

B37

DEVSEL_L

B38

GND

B39

LOCK_L

B40

PERR_L

B41

+3.3 V *

B42

SERR_L

B43

+3.3 V *

B44

C/BE1_L

B45

AD14

B46

GND

B47

AD12

B48

AD10

B49

GND

B50

KEY

B51

KEY

B52

AD8

B53

AD7

B54

+3.3 V *

B55

AD5

B56

AD3

B57

GND

B58

AD1

B59

+5 V

B60

ACK64_L

B61

+5 V

B62

+5 V


Baseboard Jumpers

One 11-pin single inline header provides three 3-pin jumper blocks that control various configuration options. Figure 4-17 shows the location. Items shown in bold in Table 4-19 show default placement for each configurable option.

Figure 4-17. Baseboard Jumpers


Table 4-19. Baseboard Jumper Summary

Function

Pins (default in bold)

What it does at system reset

CMOS clear

1-2, BMC Control

Preserves the contents of NVRAM.

 

2-3, Force Erase

Replaces the contents of NVRAM with the manufacturing default settings.

Password clear

5-6, Protect

Maintains the current system password.

 

6-7, Erase

Clears the password.

Recovery Boot

9-10, Normal

System attempts to boot using the BIOS stored in flash memory.

 

10-11, Recovery

BIOS attempts a recovery boot, loading BIOS code from a diskette into the flash device. This is typically used when the BIOS code has been corrupted.


General Procedure to Change a Jumper Setting

The short general procedure for changing a configuration setting is the same for most of the jumper functions, and is described in the following steps.

  1. Read and observe the safety and ESD precautions at the beginning of Chapter 1.

  2. Turn off all connected peripherals, turn off system power, and disconnect all AC power cords.

  3. Remove the access cover. You do not need to remove the baseboard from the chassis, and you probably do not need to remove any add-in boards.

  4. Locate the configuration jumpers at the edge of the baseboard toward the front of the system, near the narrow SCSI connector.

  5. Move jumper to pins specified for the desired setting.

  6. Reinstall the access cover using the original screws, connect the power cords, and turn on the system for the change to take effect.

  7. You may need to repeat these steps to move the jumper back to its original setting, depending on the jumper function.

CMOS Clear Jumper

The jumper at pins 1, 2, and 3 controls whether settings stored in CMOS nonvolatile memory (NVRAM) are retained during a system reset.

Procedure to restore the system's CMOS and RTC to default values:

  1. See “General Procedure to Change a Jumper Setting”.

  2. Move the CMOS jumper from pins 1 and 2 to pins 2 and 3 (the Clear CMOS memory position).

  3. Reinstall the access cover for your safety (using the original screws), and connect the power cords to the system.

  4. Turn the system on. Wait for POST to complete and for the messages “NVRAM cleared by jumper” and “Press F2 to enter Setup” to appear. This automatically reprograms CMOS and RTC to their default settings, except for the password.

  5. Enter Setup and make any changes necessary (for example, changing the boot device). Press F10 to save the new Setup configuration and exit Setup.

  6. Turn off the system, and disconnect all AC power cords from the system.

  7. Again remove the access cover.

  8. Move the jumper from pins 2 and 3 back to pins 1 and 2 (the Protect CMOS memory position).

  9. Reinstall the access cover using the original screws, and connect the power cords to the system.

  10. Run BIOS Setup or the SSU to verify the correct settings. See Chapter 3 in the SGI 1400 Server Family User's Guide.

Password Clear Jumper

The jumper at pins 5, 6, and 7 controls whether a stored password is retained or cleared during a system reset.

Procedure to clear the current password and then enter a new one:

  1. See “General Procedure to Change a Jumper Setting”.

  2. Move the Password jumper from pins 5 and 6 to pins 6 and 7.

  3. Reinstall the access cover for your safety (using the original screws), and connect the power cords to the system.

  4. Turn the system on, and wait for POST to complete. This automatically clears the password.

  5. Turn off the system, and disconnect all AC power cords.

  6. Again remove the access cover.

  7. Move the jumper from pins 6 and 7 back to pins 5 and 6.

  8. Reinstall the access cover using the original screws, and connect the power cords to the system.

  9. Run the SSU to specify a new password. See Chapter 3 in the SGI 1400 Server Family User's Guide.

Recovery Boot Jumper

The jumper at pins 9, 10, and 11 controls whether the system attempts to boot using the BIOS programmed in flash memory.

The following steps disable recovery booting:

  1. See “General Procedure to Change a Jumper Setting”.

  2. Move the recovery boot jumper from pins 9 and 10 to pins 10 and 11.

  3. Reinstall the access cover for your safety (using the original screws), then connect the power cords to the system.

  4. Turn the system on, and insert the Flash Memory Update Utility diskette in drive A. After the system boots, the speaker emits a single beep and the recovery process starts. This takes about three minutes. When the recovery process completes, the speaker emits two beeps.

While in the recovery mode, there is no screen display on the monitor. The keyboard is disabled as the system automatically recovers the BIOS. The beep codes listed in Table 4-20 describe the recovery status.

Table 4-20. BIOS Recovery Beep Codes

Beep Code

Message

2

Successful completion, no errors.

4

The system could not boot from the diskette. The diskette may not be bootable.

Continuous series of low beeps

The wrong BIOS recovery files are being used and/or the flash memory jumper is in the wrong position.


  1. Turn the system off, disconnect all AC power cords from the system, and remove the access cover.

  2. Move the jumper from pins 10 and 11 back to pins 9 and 10 to enable the normal boot mode.

  3. Replace the access cover, remove the diskette from drive A, and connect the power cords to the system.

  4. After running the special recovery mode, run the SSU to specify a new password. See Chapter 3 in the SGI 1400 Server Family User's Guide.

System I/O Addresses

Table 4-21 shows the location in I/O space of all directly I/O–accessible registers.

Table 4-21. System I/O Addresses

Address(es)

Resource

Device

Notes

0000h - 000Fh

DMA Controller 1

PIIX4E

 

0010h - 001Fh

DMA Controller 1

PIIX4E

Aliased from 0000h - 000Fh

0020h - 0021h

Interrupt Controller 1

PIIX4E

 

0022h - 0023h

 

 

 

0024h - 0025h

Interrupt Controller 1

PIIX4E

Aliased from 0020h - 0021h

0026h - 0027h

 

 

 

0028h - 0029h

Interrupt Controller 1

PIIX4E

Aliased from 0020h - 0021h

002Ah - 002Bh

 

 

 

002Ch - 002Dh

Interrupt Controller 1

PIIX4E

Aliased from 0020h - 0021h

002Eh - 002Fh

Super I/O Index and Data Ports

 

 

0030h - 0031h

Interrupt Controller 1

PIIX4E

Aliased from 0020h - 0021h

0032h - 0033h

 

 

 

0034h - 0035h

Interrupt Controller 1

PIIX4E

Aliased from 0020h - 0021h

0036h - 0037h

 

 

 

0038h - 0039h

Interrupt Controller 1

PIIX4E

Aliased from 0020h - 0021h

003Ah - 003Bh

 

 

 

003Ch - 003Dh

Interrupt Controller 1

PIIX4E

Aliased from 0020h - 0021h

003Eh - 003Fh

 

 

 

0040h - 0043h

Programmable Timers

PIIX4E

 

0044h - 004Fh

 

 

 

0050h - 0053h

Programmable Timers

PIIX4E

Aliased from 0040h - 0043h

0054h - 005Fh

 

 

 

0060h, 0064h

Keyboard Controller

 

Keyboard chip select from 87307

0061h

NMI Status & Control Register

PIIX4E

 

0063h

NMI Status & Control Register

PIIX4E

Aliased

0065h

NMI Status & Control Register

PIIX4E

Aliased

0067h

NMI Status & Control Register

PIIX4E

Aliased

0070h

NMI Mask (bit 7) & RTC Address (bits 6::0)

PIIX4E

 

0072h

NMI Mask (bit 7) & RTC Address (bits 6::0)

PIIX4E

Aliased from 0070h

0074h

NMI Mask (bit 7) & RTC Address (bits 6::0)

PIIX4E

Aliased from 0070h

0076h

NMI Mask (bit 7) & RTC Address (bits 6::0)

PIIX4E

Aliased from 0070h

0071h

RTC Data

PIIX4E

 

0073h

RTC Data

PIIX4E

Aliased from 0071h

0075h

RTC Data

PIIX4E

Aliased from 0071h

0077h

RTC Data

PIIX4E

Aliased from 0071h

0080h - 008Fh

DMA Low Page Register

PIIX4E

 

0090h - 0091h

DMA Low Page Register (aliased)

PIIX4E

 

0092h

System Control Port A (PC–AT control Port) (this port not aliased in DMA range)

PIIX4E

 

0093h - 009Fh

DMA Low Page Register (aliased)

PIIX4E

 

0094h

Video Display Controller

 

 

00A0h - 00A1h

Interrupt Controller 2

PIIX4E

 

00A4h - 00A15

Interrupt Controller 2 (aliased)

PIIX4E

 

00A8h - 00A19

Interrupt Controller 2 (aliased)

PIIX4E

 

00Ach - 00Adh

Interrupt Controller 2 (aliased)

PIIX4E

 

00B0h - 00B1h

Interrupt Controller 2 (aliased)

PIIX4E

 

00B2h

Advanced Power Management Control

PIIX4E

 

00B3h

Advanced Power Management Status

PIIX4E

 

00B4h - 00B5h

Interrupt Controller 2 (aliased)

PIIX4E

 

00B8h - 00B9h

Interrupt Controller 2 (aliased)

PIIX4E

 

00BCh - 00BDh

Interrupt Controller 2 (aliased)

PIIX4E

 

00C0h - 00DFh

DMA Controller 2

PIIX4E

 

00F0h

Clear NPX error

 

Resets IRQ13

00F8h - 00FFh

x87 Numeric Coprocessor

 

 

0102h

Video Display Controller

 

 

0170h - 0177h

Secondary Fixed Disk Controller (IDE)

PIIX4E

Not used

01F0h - 01F7h

Primary Fixed Disk Controller (IDE)

PIIX4E

 

0200h - 0207h

Game I/O Port

 

Not used

0220h - 022Fh

Serial Port A

 

 

0238h - 023Fh

Serial Port B

 

 

0278h - 027Fh

Parallel Port 3

 

 

02E8h - 02Efh

Serial Port B

 

 

02F8h - 02FFh

Serial Port B

 

 

0338h - 033Fh

Serial Port B

 

 

0370h - 0375h

Secondary Diskette

 

 

0376h

Secondary IDE

 

 

0377h

Secondary IDE/Diskette

 

 

0378h - 037Fh

Parallel Port 2

 

 

03B4h - 03Bah

Monochrome Display Port

 

 

03BCh - 03BFh

Parallel Port 1 (Primary)

 

 

03C0h - 03CFh

Video Display Controller

 

 

03D4h - 03DAh

Color Graphics Controller

 

 

03E8h - 03EFh

Serial Port A

 

 

03F0h - 03F5h

Diskette Controller

 

 

03F6h - 03F7h

Primary IDE - Sec. Diskette

 

 

03F8h - 03FFh

Serial Port A (Primary)

 

 

0400h - 043Fh

DMA Controller 1, Extended Mode Registers

PIIX4E

 

04D0h - 04D1h

Interrupt Controllers 1 and 2 Control Register

 

 

0678h - 067Ah

Parallel Port (ECP)

 

 

0778h - 077Ah

Parallel Port (ECP)

 

 

07BCh - 07BEh

Parallel Port (ECP)

 

 

0CA0 - CA3h

BMC Registers

 

 

0CF8h

PCI CONFIG_ADDRESS Register

 

Located in 450NX

0CF9h

NBX Turbo and Reset control

PIIX4E

 

0CFCh

PCI CONFIG_DATA Register

 

Located in 450NX

46E8h

Video Display Controller

 

 


Memory Map Address Range

Table 4-22 lists the memory map address ranges and the functions they support.

Table 4-22. Memory Map Address Range

Address Range (hex)

Amount

Function

0 to 07FFFFh

640 KB

DOS region, base system memory

0A0000h to 0BFFFFh

128 KB

Video or SMM memory

0C0000h and 0DFFFFh

128 KB

Add-in board BIOS and buffer area

0E0000h to 0FFFFFh

128 KB

System BIOS

0E0000h to 0EFFFFh

2 MB

Extended system BIOS

FC000000h to FFFFFFFFh

64 MB

PCI memory space


Interrupts

Table 4-23 recommends the logical interrupt mapping of interrupt sources; it reflects a typical configuration, but these interrupts can be changed by the user. Use the information to determine how to program each interrupt. The actual interrupt map is defined using configuration registers in the PIIX4E and the I/O controller. I/O Redirection Registers in the I/O APIC are provided for each interrupt signal; the signals define hardware interrupt signal characteristics for APIC messages sent to local APIC(s).


Note: To disable either IDE controller and reuse the interrupt: if you plan to disable either IDE controller to reuse the interrupt for that controller, you must physically unplug the IDE cable from the board connector (IDE0) if a cable is present. Simply disabling the drive by configuring the SSU option does not make the interrupt available.


Table 4-23. Interrupt I/O Descriptions

Interrupt

I/O APIC level

Description

INTR

INT0

Processor interrupt

NMI

N/A

NMI from PIC to processor

IRQ1

INT1

Keyboard interrupt

Cascade

INT2

Interrupt signal from second 8259 in PIIX4E

IRQ3

INT3

Serial port A or B interrupt from SIO device (user can configure)

IRQ4

INT4

Serial port A or B interrupt from SIO device (user can configure)

IRQ5

INT5

Parallel port II

IRQ6

INT6

Diskette port

IRQ7

INT7

Parallel port

IRQ8_L

INT8

RTC interrupt

IRQ9

INT9

Signal control interrupt (SCI) used by ACPI-compliant OS

IRQ10

INT10

 

IRQ11

INT11

 

IRQ12

INT12

Mouse interrupt

 

INT13

 

IRQ14

INT14

Compatibility IDE interrupt from primary channel IDE devices 0 and 1

IRQ15

INT15

 

SMI_L

 

System management interrupt—general purpose indicator sourced by the PIIX4E and BMC through the PID to the processors


Video Modes

The CL-GD5480 integrated video controller provides all standard IBM VGA modes. With 2 MB of SGRAM standard, the system supports special Cirrus Logic extended modes. Table 4-24 and Table 4-25 list the standard and extended modes that this implementation supports, including the number of colors and palette size (e.g., 16 colors out of 256 K colors), resolution, pixel frequency, and scan frequencies.

Table 4-24. Standard VGA Modes

Mode(s) in Hex

Bits per pixel

Colors (no per palette size)

Resolution

Pixel Freq. (MHz)

Horizontal Freq. (kHz)

Vertical Freq. (Hz)

0, 1

4

16/256K

360 X 400

14

31.5

70

2, 3

4

16/256K

720 X 400

28

31.5

70

4, 5

4

4/256K

320 X 200

12.5

31.5

70

6

4

2/256K

640 X 200

25

31.5

70

7

4

Mono

720 X 400

28

31.5

70

D

4

16/256K

320 X 200

12.5

31.5

70

E

4

16/256K

640 X 200

25

31.5

70

F

4

Mono

640 X 350

25

31.5

70

10

4

16/256K

640 X 350

25

31.5

70

11

4

2/256K

640 X 480

25

31.5

60

12

4

16/256K

640 X 480

25

31.5

60

12+

4

16/256K

640 X 480

31.5

37.5

75

13

8

256/256K

320 X 200

12.5

31.5

70


Table 4-25. Extended VGA Modes

Mode(s) in Hex

Bits per pixel

Colors

Resolution

Pixel Freq. (MHz)

Horiz. Freq. (KHz)

Vert. Freq. (Hz)

Memory

58, 6A

8

16/256K

800 X 600

36

35.2

56

1MB

58, 6A

8

16/256K

800 X 600

40

37.8

60

1MB

58, 6A

8

16/256K

800 X 600

50

48.1

72

1MB

58, 6A

8

16/256K

800 X 600

49.5

46.9

75

1MB

5C

8

256/256K

800 X 600

36

35.2

56

1MB

5C

8

256/256K

800 X 600

40

37.9

60

1MB

5C

8

256/256K

800 X 600

50

48.1

72

1MB

5C

8

256/256K

800 X 600

49.5

46.9

75

1MB

5C

8

256/256K

800 X 600

56.25

53.7

85

1MB

5C

8

256/256K

800 X 600

68.2

63.6

100

1MB

5D

8

16/256K (interlaced)

1024 X 768

44.9

35.5

43

1MB

5D

8

16/256K

1024 X 768

65

48.3

60

1MB

5D

8

16/256K

1024 X 768

75

56

70

1MB

5D

8

16/256K

1024 X 768

78.7

60

75

1MB

5E

8

256/256K

640 X 400

25

31.5

70

1MB

5F

8

256/256K

640 X 480

25

31.5

60

1MB

5F

8

256/256K

640 X 480

31.5

37.9

72

1MB

5F

8

256/256K

640 X 480

31.5

37.5

75

1MB

5F

8

256/256K

640 X 480

36

43.3

85

1MB

5F

8

256/256K

640 X 480

43.2

50.9

100

1MB

60

8

256/256K (interlaced)

1024 X 768

44.9

35.5

43

1MB

60

8

256/256K

1024 X 768

65

48.3

60

1MB

60

8

256/256K

1024 X 768

75

56

70

1MB

60

8

256/256K

1024 X 768

78.7

60

75

1MB

60

8

256/256K

1024 X 768

94.5

68.3

85

1MB

60

8

256/256K

1024 X 768

113.3

81.4

100

1MB

64

16

64K

640 X 480

25

31.5

60

1MB

64

16

64K

640 X 480

31.5

37.9

72

1MB

64

16

64K

640 X 480

31.5

37.5

75

1MB

64

16

64K

640 X 480

36

43.3

85

1MB

64

16

64K

640 X 480

43.2

50.9

100

1MB

65

16

64K

800 X 600

36

35.2

56

1MB

65

16

64K

800 X 600

40

37.8

60

1MB

65

16

64K

800 X 600

50

48.1

72

1MB

65

16

64K

800 X 600

49.5

46.9

75

1MB

65

16

64K

800 X 600

56.25

53.7

85

1MB

65

16

64K

800 X 600

68.2

63.6

100

1MB

66

16

32K

640 X 480

25

31.5

60

1MB

66

16

32K

640 X 480

31.5

37.9

72

1MB

66

16

32K

640 X 480

31.5

37.5

75

1MB

66

16

32K

640 X 480

36

43.3

85

1MB

66

16

32K

640 X 480

43.2

50.9

100

1MB

67

16

32K

800 X 600

36

35.2

56

1MB

67

16

32K

800 X 600

40

37.8

60

1MB

67

16

32K

800 X 600

50

48.1

72

1MB

67

16

32K

800 X 600

49.5

46.9

75

1MB

67

16

32K

800 X 600

56.25

53.7

85

1MB

67

16

32K

800 X 600

68.2

63.6

100

1MB

68

16

32K (interlaced)

1024 X 768

44.9

35.5

43

2MB

68

16

32K

1024 X 768

65

48.3

60

2MB

68

16

32K

1024 X 768

75

56

70

2MB

68

16

32K

1024 X 768

78.7

60

75

2MB

68

16

32K

1024 X 768

94.5

68.3

85

2MB

68

16

32K

1024 X 768

113.3

81.4

100

2MB

6C

8

16/256K (interlaced)

1280 X 1024

75

48

43

1MB

6D

8

256/256K (interlaced)

1280 X 1024

75

48

43

2MB

6D

8

256/256K

1280 X 1024

108

65

60

2MB

6D

8

256/256K

1280 X 1024

135

80

75

2MB

6D

8

256/256K

1280 X 1024

157.5

91

85

2MB

6E

16

32K

1152 X 864

94.5

63.9

70

2MB

6E

16

32K

1152 X 864

108

67.5

75

2MB

6E

16

32K

1152 X 864

121.5

76.7

85

2MB

6E

16

32K

1152 X 864

143.5

91.5

100

2MB

71

24

16M

640 X 480

25

31.5

60

1MB

71

24

16M

640 X 480

31.5

37.9

72

1MB

71

24

16M

640 X 480

31.5

37.5

75

1MB

71

24

16M

640 X 480

36

43.3

85

1MB

71

24

16M

640 X 480

43.2

50.9

100

1MB

74

16

64K (interlaced)

1024 X 768

44.9

35.5

43

2MB

74

16

64K

1024 X 768

65

48.3

60

2MB

74

16

64K

1024 X 768

75

56

70

2MB

74

16

64K

1024 X 768

78.7

60

75

2MB

74

16

64K

1024 X 768

94.5

68.3

85

2MB

74

16

64K

1024 X 768

113.3

81.4

100

2MB

78

16

32K

800 X 600

36

35.2

56

1MB

78

24

16M

800 X 600

40

37.8

60

2MB

78

24

16M

800 X 600

50

48.1

72

2MB

78

24

16M

800 X 600

49.5

46.9

75

2MB

78

24

16M

800 X 600

56.25

53.7

85

2MB

78

24

16M

800 X 600

68.2

63.6

100

2MB

7B

8

256/256K (interlaced)

1600 X 1200

135

62.5

48

2MB

7B

8

256/256K

1600 X 1200

162

75

60

2MB

7C

8

256/256K

1152 X 864

94.5

63.9

70

1MB

7C

8

256/256K

1152 X 864

108

67.5

75

1MB

7C

8

256/256K

1152 X 864

121.5

76.7

85

1MB

7C

8

256/256K

1152 X 864

143.5

91.5

100

1MB

7D

16

64K

1152 X 864

94.5

63.9

70

2MB

7D

16

64K

1152 X 864

108

67.5

75

2MB

7D

16

64K

1152 X 864

121.5

76.7

85

2MB

7D

16

64K

1152 X 864

143.5

91.5

100

2MB