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A GUIDE TO USING OCC CONTROL |
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This program enables you to write commands to tell a control board what to do. It uses a Logo type language. There are 8 inputs and 8 outputs numbered 0 - 7.
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| DIRECT
COMMANDS: These commands must be used in direct mode and may not be written within a procedure: |
BUILD name
- to build a named procedure, eg. BUILD LIGHTS BUILD name WITH store - to build a named procedure with a store, eg. BUILD FORWARD WITH TIME CHANGE name - to change a named procedure that has already been built. CLEAR - to clear the screen without altering memory. DELETE name - to delete a named procedure. DIR - to list the filenames stored in the disk directory. FAST - to cause all procedures to run more quickly. FINISH - to finish the program. HURTLE - to run all procedures very fast without screen display. LIST - to list the names of all procedures present in memory. LIST name - to list the lines of instructions in a named procedure. LIST ALL - to list the instructions in all procedures in memory. LOAD filename - to load a file of procedures previously stored on disk. PAUSE - to run a procedure one instruction at a time. PLIST name - same as LIST but sends the output to the printer. RENAME oldname AS newname - to rename a procedure. RERUN - to clear memory and restart the program. SAVE name - to save the named procedure with any dependant procedures from memory onto disk. A filename will be asked for. SLOW - to run all procedures with a 1 second delay between each instruction. This is the normal default speed. VALUES - to give a list of any stores and their current values. |
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| CONTROL
COMMANDS: These commands can be used in direct mode and also for writing procedures: |
BINOUT
nnnnnnnn - to set the state of all the output
channels (bits) by sending a binary value (0 or 1) to the
output port, where 0 = off and 1 = on, eg. BINOUT
00110101 is the same as SET 5,4,2,0 plus RESET 7,6,3,1. (Can
omit leading 0's = BIN 110101 ) HOOT - to make a beep sound on the computer. IF ... THEN ... (ELSE ...) - to enable a choice of actions, eg. IF BIT 2=1 THEN SET 0 ELSE HOOT (the use of ELSE is optional). INPUT store - to read the state of the input channels (bits) and put its decimal value into the stored variable whose name follows the command, eg. INPUT SENSORS MAKE store=n - to give a value <n> to a store name, eg. MAKE TIME=400 or MAKE X=X+1 OUTPUT n - to set the state of all the output channels (bits) by sending a decimal value to the output port, eg. OUTPUT 53 is the same as BINOUT 00110101 above. REPEAT n - to repeat the set of instruction lines that follow an optional number of times <n>. The number may be omitted for infinite repeats. LIMIT (or AGAIN) - used to mark the end of a REPEAT loop (also see UNTIL) RESET n - to reset up to four output channels (bits) to zero ie. switch them off, eg. RESET 3 or RESET 1,3,5,7 SET n - to set up to four output channels (bits) to 1, ie. switch them on, eg. SET 3 or SET 1,3,5,7 UNTIL - used instead of LIMIT or AGAIN, or after WAIT, eg. REPEAT ... UNTIL BIT 4=1 or WAIT UNTIL BIT 6=0 WAIT n - to cause a pause in a procedure, eg. WAIT 100 (waits for 1 sec.) or WAIT UNTIL BIT 6=0 |
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| DESIGNER
COMMANDS: These are procedures written using the BUILD command. They can be used in direct mode and also for writing larger procedures: |
name
to run the named procedure (up to 12 letters), eg. LIGHTS name n to run a named procedure with a value <n> given to the store which was built into that procedure (see above) eg. FORWARD 100 to move a buggy forward for 1 second. |
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| ACTION KEYS: The following keys may be pressed while a procedure is running to effect its speed: |
S
slow F fast H hurtle P pause (press space bar to continue) [ESC] escape or stop |
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| OUTPUT CONVERSION CHART: |
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Page last updated 23/05/2003 © Copyright, I.D.Lee,
Didcot Girls' School.
All rights
reserved. The original material provided on this site may
not be copied or redistributed without written consent
from the school.
