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GSX-86: Graphics for the APe
Output
contrl(3)
contrl(5)
intout
ptsout
Number of output vertices
Number of output parameters
Array of output parameters
Array of output coordinates
The operation of each function identifier (contrl(6) values 1-19) is described in the
following sections.
Inquire Addressable Character Cells
This operation returns information to the calling program about the number of
vertical (rows) and horizontal (columns) positions where the alpha cursor can be
positioned on the screen.
Input
Output
Enter Graphics Mode
contrl(2)
contrl(6)
contrl(3)
intout(1 )
intout(2)
o
Function ID
=
1
o
Number of addressable rows on the screen,
typicall y 24 (-1 indicates cursor address-
ing not possible).
Number of addressable columns on the
screen, typically 80 (-1 indicates cursor
addressing not possible).
This operation causes the graphics device to enter the graphics mode, if it is different
than the alpha mode. It is used to explicitly exit alpha cursor addressing mode and to
perform the transition from alpha to graphic mode properly.
Input
Output
contrl(2)
contrl(6)
contrl(3)
o
Function ID
=
2
o
9-19
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