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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 | 16E5 | CALL STR_DATA | The existing data for the stream is fetched. | |
| 16E8 | CALL CLOSE_2 | Check the code in that stream's channel. | ||
| 16EB | LD BC,$0000 | Prepare to make the stream's data zero. | ||
| 16EE | LD DE,$A3E2 | Prepare to identify the use of streams +00 to +03. | ||
| 16F1 | EX DE,HL | |||
| 16F2 | ADD HL,DE | The carry flag will be set with streams +04 to +0F. | ||
| 16F3 | JR C,CLOSE_1 | Jump forward with these streams; otherwise find the correct entry in the initial stream data table. | ||
| 16F5 | LD BC,$15D4 | |||
| 16F8 | ADD HL,BC | |||
| 16F9 | LD C,(HL) | Fetch the initial data for streams +00 to +03. | ||
| 16FA | INC HL | |||
| 16FB | LD B,(HL) | |||
| CLOSE_1 | 16FC | EX DE,HL | Now enter the data: either zero and zero, or the initial values. | |
| 16FD | LD (HL),C | |||
| 16FE | INC HL | |||
| 16FF | LD (HL),B | |||
| 1700 | RET | |||
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