Re: SX-clocks (another one)

From: Michał Pleban <>
Date: Sat, 04 May 2013 20:46:10 +0200
Message-ID: <>
Hello! wrote:

> Short answer: byte efficiency? ;-)
> Longer one: Since it is going to be an augmented library routine, I
want to keep it as small as possible and least "invasive". Setting up
the IRQ and handler would (haven't counted) add some bytes when compared
to simple polling with all IRQs disabled. Especially if I wanted to have
the library routine be non-destructive for whatever is already set on
the machine at given time. Yeah, I know I am not going to verify the
state of IRQ flag ;-)

If that's your primary goal than your VIC solution will indeed be the
best. But probably to use the $D012 register, you would need to turn the
display on - this is also possibly invasive.


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Received on 2013-05-04 19:00:14

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