Foreword
It may happen than one wishes to add a peripheral or an extension board to his PC. It is at that time that one begin to ask oneself the excrutiating question of the adresses and interrupts to use in order to avoid conflicts with the existing ones. The table here after would help to make the good choice.
For a given peripheral, the first adress is the base adress, the second is the hight limit of the adresses
zone used by this peripheral.
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Avant propos
Il arrive que l'on souhaite ajouter un périphérique ou une carte d'extension dans son
PC. C'est à ce moment là que l'on commence à se poser la question cruciale
des adresses et interruptions à utiliser afin d'éviter les conflits avec l'existant.
Le tableau ci-après devrait aider à faire le bon choix.
Pour un périphérique donné, la première adresse est l'adresse de base,
la deuxième est la limite haute de la zone d'adresses utilisées par ce
périphérique.
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1. ADRESSES
I/O ADDRESS DEVICE
000-01F DMA controler 1
020-03F interrupt controler
040-05F timer
060-06F keyboard
070-07F real-time clock
080-09F DMA page register
0A0-0BF interrupt controler 2
0C0-0DF DMA controler
0F0-0FF math coprocessor
100-1EF not usable
1F0-1F8 fixed disk
200-207 game port
220- factory default for Sound Blaster sound cards,
(possible custom adresses from 210 to 270)
278-27F parallel printer port 2 (dos LPT2: , Linux /dev/lp1)
2E8-2EF may be used for dos COM4: , Linux /dev/ttyS3
2F8-2FF serial port 2 (dos COM2: , Linux /dev/ttyS1)
300-31F prototype card
360-36F reserved
378-37F parallel printer port 1 (dos LPT1: , Linux /dev/lp0)
388- Adlib sound card
3B0-3BF monochrome display
3C0-3CF reserved
3D0-3DF color graphics display
3E8-3EF may be used for dos COM3: , Linux /dev/ttyS2
3F0-3F7 diskette controler
3F8-3FF serial port 1 (dos COM1: , Linux /dev/ttyS0)
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2. IRQ
IRQ DEVICE
0 timer
1 keyboard
2 used as input from interrupt controler 2,
(IRQ from 8 to 15)
3 COM2:
4 COM1:
5 LPT2: (as LPT2: do not use an IRQ
it can be used for another device,
factory default for Sound Blaster sound cards)
6 diskette controler
7 LPT1: (as LPT1: do not use an IRQ
it can be used for another device, e.g. sound card)
8 real-time clock
9 free for user
10 free for user
11 free for user (e.g. SCSI)
12 bus mouse (free if no bus mouse present, e.g. for network)
13 math coprocessor
14 fixed disk
15 free for user (e.g. network)
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