Re: Basic basicgraphics question

The following bytes were arranged on 11 Jan 2011 by John Greenwood :

RECTANGLE FILL 0,0,1279,1023

I get a rectangle, which is black regardless what the first GCOL number
is, filling the bottom left quarter of the screen and a small white
rectangle of 4x4 pixels looking at the screen through a magnifier.

What am I missing?

All drawing calls take OS units, not pixels, to avoid problems in
rectangular-pixel screen modes.

Most screen modes these days have an x and y eigen-factor of 1, which is
the value the number of pixels needs to be shifted left by to give a
value in OS units.

See OS_ReadModeVariable for more information.

tl;dr version: Multiply by 2.

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