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section 7 - Index of

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BCHG Bit Test and Change BCHGNotes: If A or 8 is specified as the destination operand, the following sequence <strong>of</strong> eventstakes place:1. The S bit is computed according to its definition (See Section A.5)2. The accumulator value is scaled according to the scaling mode bits SOand S1 in the status register (SR).3. If the accumulator extension is in use, the output <strong>of</strong> the shifter is limitedto the maximum positive or negative saturation constant, and the L bit isset.4. The resulting 24 bit value is placed back into A1 or 81. AO or 80 iscleared and the sign <strong>of</strong> A 1 or 81 is extended into A2 or 82.5. The bit test and change is performed on A1 or 81, and the C bit is set ifthe bit tested is set.Timing: 4+mvb oscillator clock cyclesMemory: 1 +ea program words

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