Radio Shack CCR-81 Operation Manual

Computer Graphics
---------- TRS-BO ®
3/ Graphics utilities
Operation Manual
There are six utilities included with the TRS-8~ Computer
Graphics package which are intended to be used as
stand-alone programs. However, if you are an experienced
programmer, you can use these with BASICG and FORTRAN. The
source-code for each utility, that illustrate Graphics
programming techniques, is listed later in this section.
The Graphics utilities let you:
Save graphic displays to diskette.
Load graphic displays from diskette.
Print graphic displays on a graphics printer.
Turn graphics display OFF or ON.
Clear graphics memory.
To use these utilities from BASICG, use the CMD"I" command
followed by a comma and the name of the utility in quotation
marks (e.g., CMD"I","GCLS" <ENTER> ) and control returns to
TRSDOS Ready. From TRSDOS, enter the utility directly,
without quotation marks (e.g., GCLS <ENTER> ).
To call these routines from FORTRAN, see the Subprogram
Linkage section of your TRS-8~ Model III FORTRAN Manual
(26-22~~) •
Note: These utilities load into high memory starting at F~~~
(hex); therefore, they cannot be used with DEBUG, DO, or any
communication drivers that use high memory.
----------lIadI8Ihaell----------
-59-

Radio Shack CCR-81 Specifications

General

Brand	Radio Shack
Model	CCR-81
Category	Desktop
Language	English