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Routines |
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Copies a given attribute byte to the 512 bytes where the location image attribute bytes are (so clears the area).
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| ClearRoomImage | 47938 | LD BC,512 | Set a counter in BC of 512 bytes. | |||||
| 47941 | LD HL,22528 | Load 22528 (the beginning of the attribute buffer) into HL. | ||||||
| 47944 | LD E,A | Copy the attribute byte into the E register. | ||||||
| ClearRoomImage_Loop | 47945 | LD (HL),E | Write the byte to the attribute buffer. | |||||
| 47946 | INC HL | Increment the attribute buffer pointer by one. | ||||||
| 47947 | DEC BC | Decrease the room image byte counter by one. | ||||||
| 47948 | LD A,B | Jump back to ClearRoomImage_Loop until the whole room image has been covered. | ||||||
| 47949 | OR C | |||||||
| 47950 | JR NZ,ClearRoomImage_Loop | |||||||
| 47952 | RET | Return. | ||||||
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