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Article #7115

Re: Port I/O

#7115
From: Tom Jackson
Date: Sat, 12 Mar 2005 03:35
32 lines
2307 bytes
Its simplicity was what I wanted. I hoped to demonstrate some simple DSP and
sound theory in the simplest of environments before moving on to the more
complex.

Back in the pre-dos days, I managed to get the color computer (a z-80 based
machine with a cassette tape drive) to play some pretty complex music. Oh
well, I will just have to re-think it.

Thanks for your efforts!

Tom
" Bruce Salzman" <bruce@nospam.org> wrote in message
news:4232291c$1@newsgroups.borland.com...
>
> "Tom Jackson" <tjax@comcast.net> wrote in message
> news:423221e8@newsgroups.borland.com...
> > An asm in or out instruction raises EPriviledge exception. I don't
> > want to
> > use Beep() because it is not powerful enough for what I want to do.
> >
>
> Can you find an old computer running DOS? Seriously, the PC speaker
> has always been a problem for Windows. In order to produce sounds, you
> need the timer chip, which is being used for other things. That's why
> the WinAPI doesn't expose much of an interface for it (Beep() and
> MessageBeep(0xFFFF), and those grundgingly). What you want to do was
> commonplace 10 or 20 years ago, but the PC has moved on.
>
> Regards,
> Bruce
>
>
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Subject: Re: Port I/O
Date: Fri, 11 Mar 2005 22:35:00 -0500
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