Intel ETX CD manual Memory Area, I/O Address Map, Peripheral Component Interconnect PCI Devices

8 System Resources

5

6

7

Yes

Yes

Yes

8.3Memory Area

Upper Memory

Used for

Available

Comment

C0000h – CFFFFh	VGA BIOS	No
D0000h – DDFFFh		Yes	shadow RAM (ISA bus restriction)
DE000h – DFFFFh	USB registers	No
E0000h – FFFFFh	System BIOS	No

8.4I/O Address Map

The I/O-port addresses of the ETX®-CD are functionally identical with a standard PC/AT.

The following I/O ports are additionally used:

I/O Address

Used for

Available

Comment

220-227h	COM3		Available if external I/O controller not used.
228-22Fh	COM4		Available if external I/O controller not used.
2F8-2FFh	COM1	No	Available if device is disabled in setup
	Configuration
370-371h	space for SMC	No	Available if external I/O controller not used.
	controller
3F8-3FFh	COM2	No	Available if device is disabled in setup
1000h >	PCI	No	I/O ports 1000h and above might be allocated by PCI devices or
			onboard hardware.

8.5Peripheral Component Interconnect (PCI) Devices

PCI Device

Busmaster

PCI Interrupt

Comment

Audio, USB	See IRQ resource
		Integrated in the Intel chipset. No REQx/GNTx pair needed.
and Ethernet	tables above

You can use REQ0/GNT0, REQ1/GNT1, REQ2/GNT2, and REQ3/GNT3 pairs for external PCI devices.

8.6Inter-IC (I2C) Bus

I2C Address

Used For

Available

Comment

JIDA-Bus-Nr.

A0h	JIDA-EEPROM	No	EEPROM for CMOS data.	0
A2h	JIDA-EEPROM	No		0
B0h	WD-PIC	No	Reserved for internal use.	0

8.7System Management (SM) Bus

Following SM bus addresses are reserved.

SM Bus Address SM Device

Comment

JIDA-Bus-Nr.

10h	SMB Host	Do not use under any circumstances.	1
12h	SMART_CHARGER	Not to be used with any SM bus device except a charger	1
14h	SMART_SELECTOR	Not to be used with any SM bus device except a selector	1
16h	SMART_BATTERY	Not to be used with any SM bus device except a battery	1
A0h	SPD	SDRAM EEPROM	1

Kontron User's Guide ETX CD 52