=> R0 = Initialisation type
/Bits/ /Value/ /Meaning/
0 0 white on black
1 black on white
1 0 perspective factor -11 (i.e. axonometric)
1 perspective factor +11
R1 ! Picture structure to initialise
R2 = Size of area available
<= R0 = Version number of Euclid 100
As a special case R0=-1 on entry simply updates the Modules current block pointer value. It is necessary to make this call in a multitasking program.
Example code
Euclid_Initialise Example code
To allocate a block of memory at BLOCK% of size 50000 for Euclid's use:
DIM block% 50000
SYS "Euclid_Initialise",,block%,50000
To re-establish Euclid's block pointer (assuming R1=0 is the preferred method):
SYS "Wimp_Poll",,wimpblock% TO code%
SYS "Euclid_Initialise",-1,block%
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