UniBasic Commands Reference - Rocket Software

Parameter Description
1-894 UniBasic Commands Reference
6 Current number of lines printed on the terminal or printer page.
7 Terminal type.
8 Current tape block size.
9 Current CPU millisecond count from the start of the program.
10 1 – The current stack (STON) condition is enabled.
0 – Current stack is inactive.
11 n – A SELECT list is active. n = # of items selected.
0 – No SELECT list is active.
12 Current time in milliseconds (local time).
13 Sleeps one second.
14 Number of characters in the type-ahead buffer. If the number of characters
in the internal buffer exceeds 511 bytes, this parameter returns 511.
15 Returns command options as a character string.
16 Run level, same as @LEVEL.
17 Indicates where UniData transfers control of a UniBasic program when the
next RETURN statement executes.
0 – Program has no called subroutine or internal subroutine GOSUB to
return to.
1 – Returning from a CALL.
2 – Returning from a GOSUB.
18-29 Not currently used.
30 Shows the level to which the interrupt key is set. If the value is 0, the
interrupt key is enabled. For all other values, the interrupt key is disabled.
To enable the interrupt key, you must match the number of BREAK OFF
statements in a program with an equal number of BREAK ON statements
to bring the value of SYSTEM(30) to 0.
31 Returns the value of $UDTHOME.
32 Returns current BASICTYPE.
SYSTEM Parameters (continued)