Spectrum ROM | Routines |
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The address of this routine is found in the parameter table.
This command allows the user to close streams. However for streams +00 to +03 the 'initial' stream data is restored and these streams cannot therefore be closed.
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CLOSE | 05861 | CALL STR_DATA | The existing data for the stream is fetched. | ||||
05864 | CALL CLOSE_2 | Check the code in that stream's channel. | |||||
05867 | LD BC,0 | Prepare to make the stream's data zero. | |||||
05870 | LD DE,41954 | Prepare to identify the use of streams +00 to +03. | |||||
05873 | EX DE,HL | ||||||
05874 | ADD HL,DE | The carry flag will be set with streams +04 to +0F. | |||||
05875 | JR C,CLOSE_1 | Jump forward with these streams; otherwise find the correct entry in the initial stream data table. | |||||
05877 | LD BC,5588 | ||||||
05880 | ADD HL,BC | ||||||
05881 | LD C,(HL) | Fetch the initial data for streams +00 to +03. | |||||
05882 | INC HL | ||||||
05883 | LD B,(HL) | ||||||
CLOSE_1 | 05884 | EX DE,HL | Now enter the data: either zero and zero, or the initial values. | ||||
05885 | LD (HL),C | ||||||
05886 | INC HL | ||||||
05887 | LD (HL),B | ||||||
05888 | RET |
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