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Routines |
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Used by the routines at Display_High_Score_Entry_Screen and Save_Or_Load_High_Scores.
Scans the entire screen attribute area from 22528 to 23295 comparing each attribute byte against the colour substitution table at 61019. Any matching byte is replaced with its table-defined counterpart. Called each frame during the high score display loops to cycle the colour state of the score cells.
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| Scan_And_Cycle_Screen_Attributes | 60796 | LD DE,22528 | Point DE to the start of the attribute area at 22528. | |
| Scan_Attr_Loop | 60799 | LD A,(DE) | Load the current attribute byte from the display. | |
| 60800 | LD HL,61019 | Set up to search for this attribute in the substitution table at 61019. | ||
| 60803 | LD BC,10 | |||
| 60806 | CPIR | Search for the attribute in the substitution table. | ||
| 60808 | JR NZ,Scan_Attr_Next | Skip replacement if the attribute was not found. | ||
| 60810 | LD A,(HL) | Replace the attribute with its substitution byte. | ||
| 60811 | LD (DE),A | |||
| Scan_Attr_Next | 60812 | INC DE | Advance to the next attribute cell. | |
| 60813 | LD A,D | Check if the scan has reached the end of the attribute area. | ||
| 60814 | CP 91 | |||
| 60816 | JR NZ,Scan_Attr_Loop | Loop back to Scan_Attr_Loop until all attribute cells are processed. | ||
| 60818 | RET | Return. | ||
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