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Routines |
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Used by the routines at TestLowBitsOfCharacter and TestLowBitsOfGraphics.
Looks the object up and folds its attribute into the two-bit count.
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| ReadObjectAttribute_LooksObjectFolds | 51022 | LD A,C | Call FetchObjectDataPointer to look up that object. | |
| 51023 | CALL FetchObjectDataPointer | |||
| 51026 | LD C,(IX+5) | Read the object's attribute into C. | ||
| 51029 | LD A,B | Shift B down by two bits, keep the low two, put L in D and call ReadHighByteSource. | ||
| 51030 | RRCA | |||
| 51031 | RRCA | |||
| 51032 | AND 3 | |||
| 51034 | LD D,L | |||
| 51035 | CALL ReadHighByteSource | |||
| 51038 | RET Z | Return if the source test returns zero. | ||
| 51039 | LD A,B | Keep the bits in 3. | ||
| 51040 | AND 3 | |||
| 51042 | LD D,H | |||
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