The BBC and Master Computer Public Domain Library

BEAE CLOSE

Submitted by Steve Fewell

Description:

Call routine &BA3E to copy BASIC Text pointer A address to BASIC text pointer B, Check that the next character is '#'
('Missing #' error if not), set Y to the number after the '#' (the file channel number).

Call &9B96 to check for the end of statement (at BASIC Text Pointer B). If the next character after the CLOSE
parameter value is not ':', '<cr>' or 'ELSE-token' then issue 'Syntax error', as the statement was not terminated
correctly.

Set Y to the value of location &2A (i.e. the LSB byte of the channel number). Note: if Y is zero then all open files
will be closed.
Set A to zero (indicating to the OSFIND routine that we are closing a file).
Call the Operating system OSFIND routine (&FFCE) to carry out the file operation.
Jump to &9005 to execute the next BASIC statement in the program/command line.

Disassembly for the CLOSE routine