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Routines |
| Prev: C463 | Up: Map | Next: C4B2 |
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Tests bits 3 and 7 of the object attribute at ObjectAttributeValue. When both allow it, the display flag chooses the mode.
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| CheckDisplayBitsThreeAndSeven | C493 | XOR A | Point HL at the object attribute and go to CheckDisplayBitsThreeAndSeven_0 if bit 3 is clear. | |
| C494 | LD HL,$A01D | |||
| C497 | BIT 3,(HL) | |||
| C499 | JR Z,CheckDisplayBitsThreeAndSeven_0 | |||
| C49B | LD A,$04 | Go to CheckDisplayBitsThreeAndSeven_0 if bit 7 of the object attribute is set. | ||
| C49D | BIT 7,(HL) | |||
| C49F | JR NZ,CheckDisplayBitsThreeAndSeven_0 | |||
| C4A1 | LD A,($A01E) | Read the display. | ||
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Bits 2 and 3 of the display flag choose the mode.
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| C4A4 | AND $0C | Jump to CheckDisplayBitsThreeAndSeven_0 with 05 if bits 2 and 3 of the display flag are both set. | ||
| C4A6 | CP $0C | |||
| C4A8 | LD A,$05 | |||
| C4AA | JR Z,CheckDisplayBitsThreeAndSeven_0 | |||
| C4AC | LD A,$07 | Use 07 for the display. | ||
| CheckDisplayBitsThreeAndSeven_0 | C4AE | LD ($A00F),A | Store it in the display mode. | |
| C4B1 | RET | Return. | ||
| Prev: C463 | Up: Map | Next: C4B2 |