C.1 System I/O Ports - Advantech MIO-2260 User Manual

C.1 System I/O Ports
Table C.1: System I/O Ports
Addr. Range (Hex)
000-01F
20h-2Dh
50h-52h
060-06F
070-07F
mask
080-09F
0A0-0BF
0C0-0DF
170h-177h
1F0h-1F7h
2F8-2FF
3F8-3FF
C.2 1st MB Memory Map
st
Table C.2: 1
Addr. Range (Hex)
F0000h - FFFFFh
D0000h - EFFFFh
C0000h - CE7FFh
B8000h - BFFFFh
B0000h - B7FFFh
A0000h - AFFFFh
00000h - 9FFFFh
C.3 DMA Channel Assignments
Table C.3: DMA channel assignments
Channel Function
0 Available
1 Reserved (audio)
2 Floppy disk (8-bit transfer)
3 Available (parallel port)
4 Cascade for DMA controller 1
5 Available
6 Available
7 Available
* Audio DMA select 1, 3, or 5
** Parallel port DMA select 1 (LPT2) or 3 (LPT1)
MIO-2260 User Manual
Device
DMA Controller
Interrupt Controller
Timer/Counter
8042 (keyboard controller)
Real-time clock, non-maskable interrupt (NMI)
DMA page register
0A0-0BF
DMA controller
IDE Controller
IDE Controller
Serial port 2
Serial port 1
MB memory map
Device
System ROM
Unused (reserved for Ethernet ROM)
Expansion ROM (for VGA BIOS)
CGA/EGA/VGA text
Unused
EGA/VGA graphics
Base memory
74