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January 28, 2020 15:35
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| (START) | |
| @16383 | |
| D=A | |
| @R0 | |
| M=D | |
| @KBD | |
| D=M | |
| //if kbd != 0, go to black | |
| @BLACK | |
| D;JNE | |
| //if kbd == 0, go to white | |
| @WHITE | |
| 0;JMP | |
| (BLACK) | |
| @R0 | |
| M=M+1 | |
| AD=M | |
| //black | |
| M=-1 | |
| //16384 + 8191 | |
| @24575 | |
| D=D-A | |
| // if < 0, go to black | |
| @BLACK | |
| D;JLT | |
| // else go to start | |
| @START | |
| 0;JMP | |
| (WHITE) | |
| @R0 | |
| M=M+1 | |
| AD=M | |
| //white | |
| M=0 | |
| //16384 + 8191 | |
| @24575 | |
| D=D-A | |
| //if < 0, go to white | |
| @WHITE | |
| D;JLT | |
| @START | |
| 0;JMP |
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