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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.
Advances the border colour cycle one step and redraws the attribute border frame. Reads the current step from Border_Colour_Step, decrements it (wrapping at 0 back to 7), looks up the outer/inner attribute pair from Table_Border_Colour_Pairs, and calls Fill_Border_Attributes to repaint the border.
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| Cycle_Border_Colour | 61678 | LD A,(50440) | Read and decrement the border colour step from Border_Colour_Step. | |
| 61681 | DEC A | |||
| 61682 | AND %00000111 | Mask the step to the range 0–7. | ||
| 61684 | LD (50440),A | Store the updated step back to Border_Colour_Step. | ||
| 61687 | SLA A | Double the step to a word offset and index into the colour pair table at Table_Border_Colour_Pairs. | ||
| 61689 | LD C,A | |||
| 61690 | LD B,0 | |||
| 61692 | LD HL,61662 | |||
| 61695 | ADD HL,BC | |||
| 61696 | LD D,(HL) | Load the outer (D) and inner (E) attribute bytes from the table. | ||
| 61697 | INC HL | |||
| 61698 | LD E,(HL) | |||
| 61699 | CALL Fill_Border_Attributes | Redraw the screen border with the new colour pair via Fill_Border_Attributes. | ||
| 61702 | RET | Return. | ||
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