Radio Shack Quick Printer II Operation Manual

Computer Graphics Operation Manual
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4/ Graphics Subroutine Library (FORTRAN)
The Graphics Subroutine Library included on the Computer
Graphics diskette lets you use the functions of TRS-8~
Computer Graphics while programming in Model III FORTRAN
(26-22~~). This library (GRPLIB/REL) must be linked to any
FORTRAN program that accesses the Graphics Subroutines.
BASICG VB. the Graphics Subroutine Library
The Graphics Subroutine Library contains subroutines which
provide the same capabilities as the Graphics commands and
functions in BASICG. The Graphics subroutines have basically the
same names and parameters as the BASICG commands. The major
differences between the Library subroutines and the BASICG
commands are:
The BASICG command LINE has three corresponding library
subroutines: LINE, LINEB, and LINEBF. LINEB and LINEBF
provide the functions of the BASICG command LINE with the
parameters Band BF respectively.
The BASICG command PAINT has two corresponding library
subroutines: PAINT and PAINTT. PAINT is for painting solid
black or white, and PAINTT is for painting with tiling.
The Library subroutines that correspond to BASICG commands
that use (x,y) coordinates (except for VIEW) use (x,y)
coordinates that have been previously set. The subroutines
used to set the coordinates are SETXY and SETXYR.
Setting Points Using SETXY and SETXYR
The coordinates specified by SETXY or SETXYR will be called the
"current" and "previous" coordinates. Subroutines that use one
(x,y) coordinate pair use the "current" coordinates and
subroutines that use two (x,y) pairs use both the "current" and
the "previous" coordinates. Each call to SETXY or SETXYR sets
the coordinates as follows:
1. Assign the values of the "current" (x,y) coordinates to the
"previous" (x,y) coordinates, (discarding the old "previous"
coordinates).
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Radio Shack Quick Printer II Specifications

General

Brand	Radio Shack
Model	Quick Printer II
Category	Desktop
Language	English