Intel MB440LX manual Addresses and Resources, 159, Address Resource

I/O Addresses and Resources

The I/O map in the following table shows the location in I/O space of all directly I/O accessible registers.

Address	Resource
0000h–000Fh	DMA Controller 1
0020h–0021h	Interrupt Controller 1
002Eh–002Fh	Super I/O Index and Data Ports
0040h–0043h	Programmable Timer
0060h, 0064h	Keyboard Controller
0061h	NMI Status & Control Register
0070h	NMI Mask (bit 7) & RTC Address (bits 6:0)
0071h	Real Time Clock (RTC)
0080h–0081h	BIOS Timer
0080h–008Fh	DMA Low Page Register
0092h	System Control Port A (PC-AT†control Port)
00A0h–00BFh	Interrupt Controller 2
00C0h–00DFh	DMA Controller 2
00F0h	Clear NPX error
00F8h–00FFh	x87 Numeric Coprocessor
0170h–0177h	Secondary Fixed Disk Controller (IDE)
01F0h–01F7h	Primary Fixed Disk Controller (IDE)
0200h–0207h	Game I/O Port
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 Floppy
0378h–037Fh	Parallel Port 2
03B4h–03BAh	Monochrome Display Port
03BCh–03BFh	Parallel Port 1 (Primary)

Continued

M440LX Server System Product Guide 159