IBM Partner Pavilion 6790, 6343, 6793, 6349, 6791, 6792, 6795, 6825, 6350, 2292, 6794, 6823 manual LPT3

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Table 2. I/O address map (continued)

Address range (hex)		Size (bytes)	Description

0072		1 bit	Enable NMI

0072, bits 6:0		6 bits	RTC address

0073		1	RTC data

0080		1	POST checkpoint register during POST only

008F		1	Refresh page register

0080 – 008F		16	DMA page registers

0090	– 0091	15	General I/O locations, available to PCI bus

0092		1	PS/2 keyboard controller registers

0093 – 009F		15	General I/O locations

00A0 – 00A1		2	Interrupt controller 2

00A2 – 00BF		30	APM control

00C0 – 00DF		31	DMA 2

00E0 – 00EF		16	General I/O locations, available to PCI bus

00F0		1	Coprocessor error register

00F1 – 016F		127	General I/O locations, available to PCI bus

0170	– 0177	8	Secondary IDE channel

01F0 – 01F7		8	Primary IDE channel

0200	– 0207	8	MIDI/joystick port

0220	– 0227	8	Serial port 3 or 4

0228	– 0277	80	General I/O locations, available to PCI bus

0278 – 027F		8	LPT3

0280	– 02E7	102	Available

02E8 – 02EF		8	Serial port 3 or 4

02F8 – 02FF		8	COM2

0338 – 033F		8	Serial port 3 or 4

0340 – 036F		48	Available

0370	– 0371	2	IDE channel 1 command

0378 – 037F		8	LPT2

0380	– 03B3	52	Available

03B4 – 03B7		4	Video

03BA		1	Video

03BC – 03BE		16	LPT1

03C0 – 03CF		52	Video

03D4 – 03D7		16	Video

03DA		1	Video

03D0 – 03DF		11	Available

03E0 – 03E7		8	Available

03E8 – 03EF		8	COM3 or COM4

03F0 – 03F5		6	Diskette channel 1

03F6		1	Primary IDE channel command port

64User Guide

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Contents Page Page Page Page Contents Index Safety Information To connect To disconnectLithium battery notice Modem safety informationLaser compliance statement Consignes de sécurité relatives au modemViii User Guide About this book How this book is organizedInformation resources Overview Identifying your computerUser Guide Features MicroprocessorExpansion Specifications Physical specifications small desktop modelPhysical specifications desktop model Physical specifications microtower model Tools required Available optionsHandling static-sensitive devices Overview User Guide Installing external options Locating the connectors on the front of your computerUSB connector Locating the connectors on the rear of your computer User Guide Installing external options Connector Description Obtaining device driversInstalling internal options small desktop model Removing the coverLocating components Identifying parts on the system boardInstalling memory Installing DIMMsInstalling adapters What to do nextInstalling internal options small desktop model What to do next Installing internal drives Drive specificationsInstalling a drive Installing a Rope Clip Replacing the cover and connecting the cables Installing internal options small desktop model User Guide Installing internal options desktop model Locating components Installing internal options desktop model Installing adapters Installing internal drives Drive specifications Installing a drive To connect the first IDE CD drive or DVD drive To connect an additional IDE CD drive or DVD drive Replacing the cover and connecting the cables Installing internal options desktop model User Guide Installing internal options microtower model Moving the power supply Installing internal options microtower model Installing memory Installing adapters User Guide Installing internal drives Installing a drive Installing internal options microtower model To connect the first IDE CD drive or DVD drive Installing a Rope Clip Replacing the cover and connecting the cables Installing internal options microtower model User Guide Using the IBM Setup Utility program Setting, changing, and deleting a password Administrator passwordErasing a lost or forgotten password clearing Cmos Using Security Profile by Device Other settings in the IBM Setup Utility programStartup sequence Changing the startup sequenceUser Guide Appendix A. Changing the battery User Guide Appendix B. Updating System Programs Recovering from a POST/BIOS update failureSystem programs User Guide System memory map Appendix C. System address mapsAddress map LPT3 DMA I/O address map COM1Address hex Description Bits Byte pointer Following tables list the IRQ and DMA channel assignments User Guide Appendix E. Notices and trademarks Television output noticeTrademarks IBMIndex DMA IRQLocation 19, 31 Memory Page Part Number 25P4024