CF83-11: Sound, etc. Word Set Manual - Page 1 of 2
CF83-11: Sound, etc. Word Set Manual
CF83 Forth
Copyright (c) 1993
by M. David Johnson
BDS Software
P.O. Box 485
Glenview, IL 60025-0485
You may make as many copies of this document as you wish for
your own use, but you may not sell or give away any copies to
anyone else.
"Thou shalt not steal"
Exodus 20:15
In order to use this product, you must have a copy of BDS
Software's product CF83: Forth-83 Standard Required Words Set.
CF83 is available from BDS Software, P.O. Box 485, Glenview, IL.
60025-0485, for $3.00 with the User's Guide on disk only, or
for $8.00 with a printed copy of the User's Guide included.
These prices are complete, including all shipping and handling
charges, but are subject to change without notice.
This manual you are reading now does not stand alone. To fully
understand the contents of this manual, you will need either a
copy of BDS Software's product CF83-1: Technical Reference
Manual, or a copy of the Forth-83 Standard.
CF83-1 is available from BDS Software, P.O. Box 485, Glenview,
IL. 60025-0485, for $10.00 with the manual on disk only, or for
$25.00 with a printed copy of the manual included. These prices
are complete, including all shipping and handling charges, but
are subject to change without notice.
If you wish a copy of the Forth-83 Standard, it is available
from the Forth Interest Group (FIG), P.O. Box 8231, San Jose, CA
95155, phone (408) 277-0668, fax (408) 286-8988. Their price
was $15.00 +3.00 handling for US, Canada, or Mexico delivery as
of April 1991. California Residents add sales tax.
Use: 11 load to load this word set.
CF83-11: Sound, etc. Word Set Manual - Page 2 of 2
** Sound, etc. Word Set
FIREL1 ( -- flag )
Flag = true if left joystick button #1 depressed.
FIREL2 ( -- flag )
Flag = true if left joystick button #2 depressed - CoCo3.
FIRER1 ( -- flag )
Flag = true if right joystick button #1 depressed.
FIRER2 ( -- flag )
Flag = true if right joystick button #2 depressed - CoCo3.
GTIMER ( -- u )
Returns current timer value, 0-65535.
STIMER ( u -- )
Sets timer value = u, 0-65535.
JOYLH ( -- 6b )
Returns left joystick horizontal position, 0-63.
JOYLV ( -- 6b )
Returns left joystick vertical position, 0-63.
JOYRH ( -- 6b )
Returns right joystick horizontal position, 0-63.
JOYRV ( -- 6b )
Returns right joystick vertical position, 0-63.
RND ( -- +n )
Returns a random number between 0 and 32767.
RANDOM ( n1 -- n2 )
Returns a random number between 0 and n1.
RANDOMIZE
Sets the random number seed to a random value. ( n seed !
sets the random number seed to user selected value n ).
SOUND ( 8b u -- )
Generates a tone of frequency 8b ( 0-255 ) for a duration
of u ( 0-65535 ).
Note that SOUND is a very simple tone generator. No words have
been provided which correspond to BASIC's PLAY command because
it is expected that each application will have individual needs,
i.e. a music program might use four or more parts, while a game
program would be more likely to use "noise" than musical tones.
Words analogous to PLAY would be inadequate in either case.
Therefore, any development of more sophisticated sound words is
left to the user.
** END **