Routines
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07070: THE 'LINE-NEW' SUBROUTINE
Used by the routine at STMT_RET.
There has been a jump in the program and the starting address of the new line has to be found.
Input
HL Number of the new line
LINE_NEW 07070 CALL LINE_ADDR The starting address of the line, or the 'first line after' is found.
07073 LD A,(23620) Collect the statement number (NSPPC).
07076 JR Z,LINE_USE Jump forward if the required line was found; otherwise check the validity of the statement number - must be zero.
07078 AND A
07079 JR NZ,REPORT_N
07081 LD B,A Also check that the 'first line after' is not after the actual 'end of program'.
07082 LD A,(HL)
07083 AND 192
07085 LD A,B
07086 JR Z,LINE_USE Jump forward with valid addresses; otherwise signal the error 'OK'.
Report 0 - OK.
07088 RST 8 Use the error handling routine.
07089 DEFB 255
Note: obviously not an error in the normal sense - but rather a jump past the program.
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