Seiriakes kai irq (was : Re: linux-greek-users-digest V1 #185)

[Michalas Othon]

>
>On 18-Dec-97 Tsakiris Yannis wrote:
>
>> de mporw na katalabw giati de mporw
>>na doulepsw tin prwti seiriaki. mono ti defteri pou tin exw sto pontiki.
>>mipws epidi com1 kai com3 exoun to idio IRQ ? (ana8ema ki an kserw ti
>>einai afto to rimadi to IRQ bebaia..) Genika afta ta pragmata me tis
>
>IRQ = I(nterrupt) R(e)Q(uest) : otan erxetai ena byte sthn seiriakh
>sou, gia na mhn xathei, ayth stelnei ena shma sthn CPU, ena IRQ. H CPU
>(simfona me proteraiothtes panta) stamata oti kanei, kai trexei ena 
>programma eksiperethshs ths IRQ - kai paei kai sozei to byte.
>
>Tora oso afora tis seiriakes multi-io , o mpouzoukokefalos pou sxediase
>to ISA, ebale to IRQ ths 1hs na einai idio me tis 3hs, kai 2hs me 4hs. 
>Ayto shmainei oti den mporeis na exeis mazi 1+3, h 2+4, apla kai mono
>giati tha mpourdouklonontan metaksi toys - diladi tha kanane conflict 
>(To irq dinetai meso enos kalodiou - pia seiriakh tha tou dosei tash
>kai pia oxi ? Kai h CPU pos tha kserei pia to esteile ?)
>

Gi auto ta e3upna leitourgika newterhs geneas blepoun thn 3 kai 4
seiriakh mesw Polling kai oxi mesw Interupt mode.

Mono mesw polling einai ligo mpaxalo apo taxuthtes.

-O8wn




>Ayta se apla logia.
>---
>I.Ioannou (roryt at hol.gr)
>--
>====================================================================
>Gia boithia (h na diagrafhte) e-mail sto majordomo at argos.hol.gr
>Ta archives tis listas einai sto http://www.argos.hol.gr/lists :
>prin steilete kapoia erothsh psakte mipos exei hdh apanththei.
>Gia opoiodipote problima stilte e-mail ston owner-linux-greek-users
>====================================================================
>
=================================================
Alfa - Group
= Greece-== ALFA - O.Mixalas  -- Al. Panagoulh 24  -- 491 00 Kerkura  
--Greece -Tel+30-661-40096
= Italia-==VSI  --  V. dei Mille 38/40  --  MailBox 301  --  00185 Roma  --  
Italy
= Albania-==I.A.G. - computer sh.p.k.  --  Skenderbeu 1  --  Saranda  --  
Albania
=================================================
 

--
====================================================================
Gia boithia (h na diagrafhte) e-mail sto majordomo at argos.hol.gr
Ta archives tis listas einai sto http://www.argos.hol.gr/lists :
prin steilete kapoia erothsh psakte mipos exei hdh apanththei.
Gia opoiodipote problima stilte e-mail ston owner-linux-greek-users
====================================================================