Spectre GCR Manual Manuals - Atari Documentation Archive

o Mac Mode
Hence, if both Macdots are white, you want a white Atari dot to
result; if one or the other MacDots is white, but not both, you want a
grey Atari dot to result; if both MacDots are black, you want a black
Atari dot to result.
Using the Atari Control Panel, set the first four colors to black,
grey, grey, and white, and you should be in good shape.
With the default red-green-blue colors, you'll get a weird "Mac
Desktop in color" effect, with colors changing depending on where
you are in the screen. It's worth a look; try especially the "fill" patterns
in MacPaint. The colors resulting are, of course, accidental, but it is fun
to see; then go back to black-grey-grey-white, okay?
EDITOR: After all, you bought it so you could use it, right?
I would also suggest using two slightly different greys to help
enhance visibility. We've found that the following settings work the
best:
Palette Hex Decimal Greyness Default
0 OFFF 4095 7 0777
1 OCCC 3276 4 0000
2 0333 879 3 0700
3 0000 0 0 0600
In color mode, you're going to notice overall speed is down about
30%, the mouse seems to move "notchily" or "jerkily" , and the screens
seem to open in sudden movements rather than smooth animation.
This is because of how I had to do color. The Mac only knows about
monochrome (I-color), and sets up screen memory for monochrome;
this is completely wrong for the ST hardware in color. Thus, every
1/3Oth of a second or so, I take a "snapshot" of the monochrome
screen, format it for color, and write it to a separate "color screen".
Thus, you're getting a series of snapshots, and hence the strange
special effects.
On the highest memory mode of a 1-meg ST, you'll lose some
memory going to color mode, as I have to reserve 64K for the "color
buffer" (actually, only 32K, but these things work on 64K borders ­
trust me, they do.)
Monochrome monitors are under $150, and if you try, you can
find them for much less. Many ST dealers tell me that Mac emulation is
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