SAR Shift Arithmetic Right - This is a new instruction that does not shift

the sign bit (i.e. the msb) of its operand. The other bits are shifted

as normal except that the new bits that enter from the left are copies

of the sign bit (that is, if the sign bit is 1, the new bits are also 1).

Thus, if a byte is shifted with this instruction, only the lower 7 bits

are shifted. As for the other shifts, the last bit shifted out is stored in

the carry flag.

Code:

` mov ax, 0C123H`

sal ax, 1 ; ax = 8246H, CF = 1

sal ax, 1 ; ax = 048CH, CF = 1

sar ax, 2 ; ax = 0123H, CF = 0