Commodore Plus 4 - Input;Output Statements

66 The BASIC Language
4. You can use an optional name for the file on disk or tape. The file name can
be any 1 to 16 characters. If you intend to call the file by name, do it now because
you will not be able to later.
5. For disk files, include in the quotation marks the optional type of file
following a comma. The types are P (program file), S (sequential file), L (relative
file), or U (user file). The default is sequential file. For more information, see
Chapter 6.
6. For disk files, an optional disk file mode (R for read, or W for write) can
follow the file type (still in quotation marks and separated from the type by a
comma). The default is read.
Examples: OPEN 4,4 :■ Opens communication to the printer so you
can print directly onto it.
OPEN 1,1,0/'BOXES'' Opens a tape file for reading from tape.
OPEN 8,8,15 Opens the command channel to the disk drive.
OPEN 1,8,4,"REC3,S,W" Opens a sequential file REC3 on a disk so you
can write data records to the file.
OPEN 4,4,0 Opens printer in upper case/graphic mode.
OPEN 4,4,7 Opens printer in upper/lower case mode.
PAINT Abbr. pA
PAINT color source, coordinates, mode
Used in any graphic drawing mode to make the outline of a shape solid. The
shape is filled with color from the starting point until boundaries are met on all
sides. See Chapter 4 for more information on coordinates for PAINT.
Parameter Values Default
Color source
Coordinates
Column coordinate
High-res modes
Multicolor modes
Row coordinate
Boundary mode
0-3
0-319
0-159
0-199
Oor 1
1
pixel cursor
0
1. The color source indirectly selects the painting color. There are five color
sources, but color source 4 (the border color) cannot be used in drawing com
mands. Color sources 2 and 3 can be used only in multicolor modes.
0 screen background color
1 foreground color (default value)