[zxspectrum] Re: ZXMMC+
- From: Antonio Giusa <antonio.giusa@xxxxxxxxxx>
- To: zxspectrum@xxxxxxxxxxxxx
- Date: Fri, 20 Feb 2009 13:07:03 +0100
Alex ha scritto:
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.AlexDomanda: perché la scheda ZXMMC+ non funziona con l'interfaccia1? È un problema ResiDos?La zxmmc+ integra una logica equivalente quella della seriale e del networkdella IF1, quindi per forza di cose utilizza >le stesse porte.Non e' possibile usare contemporaneamente due interfacce sulle stesseporte, 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 nonsbaglio e' il dip n.2) se vuoi innestarne una >vera contemporaneamente.
- References:
- [zxspectrum] Re: ZXMMC+
- From: Alex
- [zxspectrum] Re: ZXMMC+
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