|
Adress range Description
---------------------------------------------------------------------
0-640KB (000000-09FFFF) Base memory
640-768 KB (0A0000-0BFFFF) PCI/ISA video buffer memory
768-800 KB (0C0000-0C7FFF) Video BIOS memory
800-896 KB (0C8000-0DFFFF) ISA card BIOS and buffer memory
896-960 KB (0E0000-0EFFFF) BIOS extension memory, Setup and
POST memory, PCI development BIOS
960-1024KB (0F0000-0FFFFF) System BIOS memory
1024 KB - Upper Limit Main memory
Upper Limit - 4 GB PCI memory
This table shows the hexadecimal addresses for each of the system board input/output
(I/O) functions. You may use this information for adapter cards that require you to set up
I/O addresses.
Adress range (hexadecimal) Function
---------------------------------------------------------------------
0000-001F DMA controller 1
0020-003F Interrupt controller 1
0040-0047 System timer
0050-0057 System timer
0060-006F System controller 8742
0070 CMOS RAM address and NMI mask
0078-007B Real-time clock (RTC)
0080-009F DMA page register
00A0-00BF Interrupt controller 2
00C0-00DF DMA controller 2
00F0-00FF Math coprocessor
0170-0177, 0376 Secondary IDE controller
01F0-01F7, 03F6 Primary IDE controller
0200-0207 Joystick
0220-022F,0388-038B,0534-0537 Audio
0330-0333 MIDI
0278-027F Parallel port 2
02F8-02FF Serial port
0378-037F Parallel port 1
03F0-03F7 Diskette drive controller
03F8-03FF Modem
0CF8 PCI mechanism #1 config.addr.register
0CFC PCI mechanism #2 config.data register
7400-740F Bus master IDE
Please see the LEGAL - Trademark notice.
Feel free - send a for any BUG on this page found - Thank you.