mk90.basic.statements

Statement GOSUB

Call a numbered subroutine.

Syntax

GOSUB line-number

Parameters

Parameter	Meaning
`line-number`	Literal destination present in the source.

Behavior

Pushes a return frame and jumps to the target. RETURN resumes at the following instruction, which may be after a colon on the caller’s line.

GOSUB and FOR share eight last-in, first-out control frames. Calls can nest within that combined limit. Variables are global; there are no parameters or automatic local variables.

Example

10 A=4
20 GOSUB 50
30 PRINT A
40 END
50 A=A+1
60 RETURN

Limits and diagnostics

No named subroutines or functions defined by the program. Finish nested FOR frames before returning from a subroutine.

Status-code reference.