Rabbit 2000 Reference Manual

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Rabbit 2000 Reference Manual Manual pdf 95 page image

Instruction Reference Manual 91DescriptionRotates to the right the data in the register r (any of the registers A, B, C, D, E, H, or L). Each bit in the regis-ter moves to the next lowest-order bit position (bit 7 moves to bit 6, etc.) while bit 0 moves to both bit 7 andthe CF. See Figure 4 on page 90.DescriptionRotates to the right the data in the Accumulator. Each bit in the register moves to the next lowest-order bitposition (bit 7 moves to bit 6, etc.) while bit 0 moves to both bit 7 and the CF. See Figure 4 on page 90.RRC rOpcode Instruction Clocks Operation——CB 0FCB 08CB 09CB 0ACB 0BCB 0CCB 0DRRC rRRC ARRC BRRC CRRC DRRC ERRC HRRC L4 (2,2)4 (2,2)4 (2,2)4 (2,2)4 (2,2)4 (2,2)4 (2,2)4 (2,2)r = {r[0],r[7,1]}; CF = r[0]A = {A[0],A[7,1]}; CF = A[0]B = {B[0],B[7,1]}; CF = B[0]C = {C[0],C[7,1]}; CF = C[0]D = {D[0],D[7,1]}; CF = D[0]E = {E[0],E[7,1]}; CF = E[0]H = {H[0],H[7,1]}; CF = H[0]L = {L[0],L[7,1]}; CF = L[0]Flags ALTD I/OS Z L/V C F R SP S D• • L • • •RRCAOpcode Instruction Clocks Operation0F RRCA 2 A = {A[0],A[7,1]}; CF = A[0]Flags ALTD I/OS Z L/V C F R SP S D- - - • • •