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Re: [CPROG] Mem. mapped I/O



Mads Andresen wrote:
> 
> Fornemt med hurtigt svar og det hele -> meget taknemmelig
> 
> >Det forstår jeg ikke helt. Der er heller ikke nogen ISA konnektor på
> >kortet?
> 
> JO - med PC-104 stakker man kortene oven på hinanden. PC-104 er blot
> ISA-bussen i en anden udformning - stik istedet for kantkonnektor
> (kantkonnentor er ikke så fedt til industribrug, selvom det dog bliver
> brugt til det!!).
> Der findes også PC-104+ som er med PCI, der findes dog ikke så mange
> kort til det.

Aha!

> >Kig på side 170-176, der står faktisk meget af det jeg har skrevet.
> >Problemet er at finde hukommelsesområdet. At dømme efter addresserne
> >ligner det nu I/O porte for mig.
> 
> Jep - det er også det der forvirrer mig??
> 
> Men jeg kan vel prøve begge dele??

Tja. Du skriver at du kun har en pjece. Så ved du vel ikke hvad du skal
skrive på de forskellige addresser?? Mon ikke du skal have fat i en
databog for CAN interface chippen?
 
> Spørgsmål:
> Hvis det skulle mappes i memoryområdet, hvad kunne en typisk addresse
> så være (20 bits addreser over 640k - eller hvad!!)???

Det er ikke rigtig til at vide.

Mvh Morten


 
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