EightyOne and the AY

Emulator and emulator development specific topics

Re: EightyOne and the AY

Postby Spirantho on Sat Oct 24, 2009 12:54 pm

The problem with the ZonX isn't the hardware, it's that the hardware has no software. At all. Nobody's written any. Whatever hardware you make you'll still have to make the software so you may as well make it ZonX compatible too, as it'll just be a matter of changing port numbers. It would be cool to make some software for it, though, a simple tracker-esque thingy would be great.

EightyOne's AY emulation works fine as long as you don't touch the coarse registers, so you can only get the higher octaves. The "hymne" is all done using the fine register, so it plays perfectly.... but as soon as you touch the coarse register it all goes horribly wrong. Unfortunately writing a trackery program will be a nightmare without a working emulator....
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Re: EightyOne and the AY

Postby yerzmyey on Fri Oct 30, 2009 11:20 pm



I would like to report that HYMNE still doesn't work on EightyOne with ZonX and these two games mentioned above work on AY perfectly.
Something's still wrong... Hm.

PS: Great games, btw.
"FERENGI" - an arcade game for ZX81: http://hooyprogram.republika.pl/ferengi_zx81.rar
"MONOCHROME" - a NEW free paper/PDF magazine about ZX81: http://tiny.pl/8mmh
ZX-81/TS1000/TS1500 COMPETITIONS 2007/2009: http://zx81.republika.pl/
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Re: EightyOne and the AY

Postby RWAP on Mon Feb 22, 2010 8:18 am

Can someone please remind me of the names of those two games?

Didn't some of the QS releases feature support for sounds?
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Re: EightyOne and the AY

Postby BrunoFlorindo on Tue Feb 23, 2010 2:40 pm

If memory serves correct, QS's Defenda (Defender?) has optional AY sounds but you need the QS sound board to be able to hear them. :p I think EightyOne includes this game and emulates this board.
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Re: EightyOne and the AY

Postby siggi on Sun Mar 14, 2010 1:43 pm



Those 2 games did not work with my real ZONX81. My ZXON8-box uses the i/o addresses $1F and $DF, while those games use the addresses $0F and $CF. So I didn't have any sound :(

But I cut the A4 address line in my ZONX81, and now it works :P

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