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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 5800 to 5AFF comparing each attribute byte against the colour substitution table at EE5B. 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 | ED7C | LD DE,$5800 | Point DE to the start of the attribute area at 5800. | |
| Scan_Attr_Loop | ED7F | LD A,(DE) | Load the current attribute byte from the display. | |
| ED80 | LD HL,$EE5B | Set up to search for this attribute in the substitution table at EE5B. | ||
| ED83 | LD BC,$000A | |||
| ED86 | CPIR | Search for the attribute in the substitution table. | ||
| ED88 | JR NZ,Scan_Attr_Next | Skip replacement if the attribute was not found. | ||
| ED8A | LD A,(HL) | Replace the attribute with its substitution byte. | ||
| ED8B | LD (DE),A | |||
| Scan_Attr_Next | ED8C | INC DE | Advance to the next attribute cell. | |
| ED8D | LD A,D | Check if the scan has reached the end of the attribute area. | ||
| ED8E | CP $5B | |||
| ED90 | JR NZ,Scan_Attr_Loop | Loop back to Scan_Attr_Loop until all attribute cells are processed. | ||
| ED92 | RET | Return. | ||
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