Amstrad CPC screen saver
========================

This short program (it only occupies 163 bytes when running)
implements a screen saver for Amstrad CPCs.  If no key is
pressed for one minute, the screen goes black.  If any key
is then pressed, the screen is restored.

To use, copy scrsave.bas and scrsave.bin onto a tape or disc
and type RUN"scrsave after resetting the computer.

This program has only been tested on a CPC6128 but is
expected to work on CPC464s and CPC664s too.

This program has not been tested on Plus machines; it is
quite possible, if not probable, that it won't work on them.
[CPC hackers with Plus machines are invited to tell me
the two pairs of magic numbers I'm after!]

To change the blanking delay, poke the address given by
the loader with the delay in units of 1/50 s, as a
little-endian quantity.  If you don't understand what this
means, then typing "POKE <the value given> + 1, <time>", where
<time> is in units of about 5 seconds, should do the trick.

If inks are changed while the screen is blanked, they may
very briefly become visible.  This does not affect the
program's screen-saving properties!


Mark RISON, mrison@hotmail.com, 1999-06-19
