nojo, divam se do userguide z80 ... pokud je pri preruseni ocekavana
instrukce, tak je vystaveno M1=0, RD=0 a MEMRQ=0 ... Pokud je ocekavan
vektor preruseni, tak M1=0, RD=1 a IORQ=0 ... na adresni sbernici je v
tu chvili vystaven aktualni PC ... Tedy jakasi sance, ze se tam objevi
cislo portu na ktery reaguje unikarta by tu byla ...
Dne 25.8.2010 20:47, Jaroslav Nemec (sharpemupandora.cz) napsal(a):
Zobrazit citovaný text (34 řádků)
>
> Presne tak, pri Interrupt Request signal IORQ=0 znamena, ze datova
> zbernica je otvorena na zapis vektora prerusenia (input zo strany CPU).
>
> David Luftner (sharpemupandora.cz) wrote:
>> pri obsluze preruseni IORQ=0
>> M1=0
>> RD=1
>> WR=1
>> ---
>>
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>
> __________ Information from ESET NOD32 Antivirus, version of virus
> signature database 5397 (20100825) __________
>
> The message was checked by ESET NOD32 Antivirus.
>
> http://www.eset.com
>
>
>
> ---