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Routines |
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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.
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LINE_NEW | 1B9E | CALL LINE_ADDR | The starting address of the line, or the 'first line after' is found. | |||||||
1BA1 | LD A,($5C44) | Collect the statement number (NSPPC). | ||||||||
1BA4 | JR Z,LINE_USE | Jump forward if the required line was found; otherwise check the validity of the statement number - must be zero. | ||||||||
1BA6 | AND A | |||||||||
1BA7 | JR NZ,REPORT_N | |||||||||
1BA9 | LD B,A | Also check that the 'first line after' is not after the actual 'end of program'. | ||||||||
1BAA | LD A,(HL) | |||||||||
1BAB | AND $C0 | |||||||||
1BAD | LD A,B | |||||||||
1BAE | JR Z,LINE_USE | Jump forward with valid addresses; otherwise signal the error 'OK'. | ||||||||
Report 0 - OK.
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1BB0 | RST $08 | Use the error handling routine. | ||||||||
1BB1 | DEFB $FF | |||||||||
Note: obviously not an error in the normal sense - but rather a jump past the program.
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