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Evo N180 - System Resource Settings

Resource Settings
System DMA
Hardware DMA
System Function
DMA0
Available for audio
DMA1
Entertainment Audio (Default; Alternate = DMA0, DMA3, None)
DMA2
Diskette Drive
DMA3
ECP Parallel Port LPT1 (Default; Alternate = DMA 0, none)
DMA4
DMA Controller Cascading (Not available)
DMA5
Available for PC Card*
DMA6
Not Assigned
DMA7
Not Assigned
*PC Card controller can use DMA 1, 2, or 5.
System Interrupts
Hardware IRQ
System Function
IRQ0
System Timer
IRQ1
Keyboard Controller
IRQ2
Cascaded
IRQ3
COM2
IRQ4
COM1
IRQ5
Audio (default)*
IRQ6
Diskette Drive 
IRQ7
Parallel
IRQ8
RTC 
IRQ9
Infrared
IRQ10
System Use
IRQ11
System Use
IRQ12
Internal Point Stick or External Mouse 
IRQ13
Coprocessor (Not available to any peripheral) 
IRQ14
IDE Interface (Hard Disk and CD-ROM Drive) 
IRQ15
System Use
Notes:
PCMCIA cards may assert IRQ3, IRQ4, IRQ5, IRQ7, IRQ9, IRQ10, IRQ11, or IRQ15.
Either the infrared or the serial port may assert IRQ3 or IRQ4.
* Default configuration; audio possible configurations are: IRQ5, IRQ7, IRQ9, IRQ10, or none.
System I/O Addresses
I/O Address (Hex)
System Function (Shipping Configuration)
000 - 00F
DMA Controller # 1
010 - 01F
Unused
020 - 021
Interrupt Controller # 1
022 - 024
Opti Chipset Configuration registers
025 - 03F
Unused
02E - 02F
87334 "Super IO" configuration for CPU
040 - 043
Counter/Timer Registers
044 - 05F
Unused
060
Keyboard Controller
061
Port B
062 - 063
Unused
064
Keyboard Controller
065 - 06F
Unused
070 - 071
NMI Enable/Real Time Clock
072 - 07F
Unused
080 - 08F
DMA Page Registers
090 - 091
Unused
092
Port A
093 - 09F
Unused
0A0 - 0A1
Interrupt Controller # 2
0A2 - 0BF
Unused
0C0 - 0DF
DMA Controller # 2
0E0 - 0EF
Unused
0F0 - 0F1
Coprocessor Busy Clear/Reset
0F2 - 0FF
Unused
100 - 16F
Unused
170 - 177
Secondary Fixed Disk Controller
178 - 1EF
Unused
1F0 - 1F7
Primary Fixed Disk Controller
1F8 - 200
Unused
201
Joystick (Decoded in ESS1688)
202 - 21F
Unused
220 - 22F
Entertainment Audio
I/O Address (Hex)
System Function (Shipping Configuration)
230 - 26D
Unused
26E - 26
Unused
278 - 27F
Unused
280 - 2AB
Unused
2A0 - 2A7
Unused
2A8 - 2E7
Unused
2E8 - 2EF
Reserved Serial Port
2F0 - 2F7
Unused
2F8 - 2FF
Infrared Port
300 - 31F
Unused
320 - 36F
Unused
370 - 377
Secondary Diskette Drive Controller
378 - 37F
Parallel Port (LPT1/Default)
380 - 387
Unused
388 - 38B
FM Synthesizer - OPL3
38C - 3AF
Unused
3B0 - 3BB
VGA
3BC - 3BF
Reserved (Parallel Port/No EPP Support)
3C0 - 3DF
VGA
3E0 - 3E1
PC Card controller in CPU
3E2 - 3E3
Unused
3E8 - 3EF
Internal Modem
3F0 - 3F7
"A" Diskette Controller
3F8 - 3FF
Serial Port (COM1/Default)
CF8 - CFB
PCI Configuration Index Register (PCIDIV0-1)
CFC - CFF
PCI Configuration Data Register (PCIDIV0-1)
System Memory Map
Size
Memory Address
System Function
640 K
00000000 - 0009FFFF
Base Memory
128 K
000A0000 - 000BFFFF
Video Memory
48 K
000C0000 - 000CBFFF
Video BIOS
160 K
000C8000 - 000E7FFF
Unused
64 K
000E8000 - 000FFFFF
System BIOS
15 M
00100000 - 00FFFFFF
Extended Memory
58 M
01000000 - 047FFFFF
Super Extended Memory
58 M
04800000 - 07FFFFFF
Unused
2 M
08000000 - 080FFFFF
Video Memory (Direct Access)
4 G
08200000 - FFFEFFFF
Unused
64 K
FFFF0000 - FFFFFFFF
System BIOS

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