Atari ST series Technical Reference Manual page 336

-0 0 2 to -0 0 1
Width of the destination memory form; set to the save value
as WIDTH.
+ 000 to +001
Number of color bit planes for current screen resolution.
+ 003 to +003
The width of the destination memory form in bytes. When
the destination is the screen (as is usually the case), the
value stored here should be 160 ($A0) for the low- and me­
dium-resolution modes, and 80 ($50) for high resolution.
+ 004 to +007
Pointer to the CONTRL array.
+ 008 to +011
Pointer to the INTIN array.
+ 012 to +015
Pointer to the PTSIN array.
+ 016 to +019
Pointer to the INTOUT array.
+ 020 to +023
Pointer to the PTSOUT array.
+ 024 to +025
The color bit plane value for plane 0 of the display. This vari­
able, and the three that follow, are used to determine the
color drawn by several of the line A functions.
328
APPENDIX H
BYTES__LIN
PLANES
WIDTH
CONTRL
INTIN
PTSIN
INTOUT
PTSOUT
COLBITO
(-$ 0 0 2 to -$001)
( + $000 to +$001)
( + $002 to +$003)
( + $004 to +$007)
( + $008 to +$00B)
( + $00C to + $00F)
( + $010 to +$013)
( + $014 to +$017)
( + $018 to +$019)