>I would expect the hardware to use the busreq-pin on the z80. But is that >one actually in the cartridge-slot? Unfortunatly, no, it isn't... :-( It might be possible to add it to the MSX slot's, there are some reserved pins. However, just adding a wire from the ^BUSRQ signal to one of these pins isn't enough... It is relatively simple to control the direction of the databus. By means of busdir. But all the one-direction address drivers have to be replaced by bi-directional ones. If someone really makes a new MSX, DMA would be one of the things I would like to see. Now I come to another thing, on the R800, there seem to be some DMA control lines. Anyone knows how to use these? There are also 6 (?) interrupt pins, how does this work? And on the S1990, there are pins for high density select/detection (I am at university now, so I don't have the turbo-R manual here) Anyone knows on what registers these signals are located? Greeting, Erik Maas **** MSX Mailinglist. To unsubscribe, send an email to [EMAIL PROTECTED] and put in the body (not subject) "unsubscribe msx [EMAIL PROTECTED]" (without the quotes :-) Problems? contact [EMAIL PROTECTED] (www.stack.nl/~wiebe/mailinglist/) ****
