[zxspectrum] Re: ZXMMC+
- From: "Alex" <albarzaghi@xxxxxx>
- To: <zxspectrum@xxxxxxxxxxxxx>
- Date: Fri, 20 Feb 2009 09:52:09 +0100
Ho provato a disabilitare la funzionalità IF1 agendo sul dip n.2 ma ho notato che avviando un programma Basic che utilizza istruzioni per IF1 esce il messaggio di mancato riconoscimento delle stesse (OPEN #, CLOSE # etc). Ho anche provato con il dip n.1 ma il risultato non cambia. Ovviamente togliendo la ZXMMC+ l'interfaccia funziona regolarmente. C'è qualche altro passaggio che mi sfugge? Ciao. Alex > Domanda: perché la scheda ZXMMC+ non funziona con l'interfaccia1? È un > problema ResiDos? >La zxmmc+ integra una logica equivalente quella della seriale e del network della IF1, quindi per forza di cose utilizza >le stesse porte. >Non e' possibile usare contemporaneamente due interfacce sulle stesse porte, perche' come minimo vanno in conflitto ogni >volta che il processore prova a leggere una di queste (entrambe le interfacce forzeranno dati (diversi) sul databus, con >poco piacere per entrambe). >Devi assolutamente disabilitare le funzionalita' IF1 della zxmmc+ (se non sbaglio e' il dip n.2) se vuoi innestarne una >vera contemporaneamente.
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