NAME	LSL, LSR -- Logical shift left and logical shift right
SYNOPSIS	LSd Dx,Dy LSd #<data>,Dy LSd <ea> where d is direction, L or R Size = (Byte, Word, Long)
FUNCTION	Shift the bits of the operand in the specified direction. The carry bit set set to the last bit shifted out of the operand. The shift count for the shifting of a register may be specified in two different ways: Immediate - the shift count is specified in the instruction (shift range 1-8). Register - the shift count is contained in a data register specified in the instruction (shift count mod 64) For a register, the size may be byte, word, or long, but for a memory location, the size must be a word. The shift count is also restricted to one for a memory location. LSL:   <--     C<------ OPERAND <--- 0     |       | (V = 0)   X<---'     LSR:       -->   0 ---> OPERAND -------> C     |     |     `---> X
FORMAT	In the case of the shifting of a register: 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 1 1 1 0 NUMBER / REGISTER dr SIZE i/r 0 1 REGISTER In the case of the shifting of a memory area: 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 1 1 1 0 0 0 1 dr 1 1 MODE REGISTER   <ea>
NUMBER/REGISTER	Specifies number of shifting or number of register which contents the number of shifting. If i/r = 0, number of shifting is specified in the instruction as immediate data If i/r = 1, it's specified in the data register. If dr = 0, right shifting If dr = 1, left shifting
SIZE	00 -> one Byte operation 01 -> one Word operation 10 -> one Long operation
REGISTER	For a register shifting: <ea> Indicates the number of data register on which shifting is applied. For a memory shifting: <ea> indicates operand which should be shifted. Only addressing modes relatives to memory are allowed: Addressing Mode Mode Register Dn - - An - - (An) 010 No reg. An (An)+ 011 No reg. An -(An) 100 No reg. An (d16,An) 101 No reg. An (d8,An,Xi) 110 No reg. An (bd,An,Xi)< 110 No reg. An ([bd,An,Xi]od) 110 No reg. An ([bd,An],Xi,od) 110 No reg. An Addressing Mode Mode Register Abs.W 111 000 Abs.L 111 001 (d16,PC) - - (d8,PC,Xi) - - (bd,PC,Xi) - - ([bd,PC,Xi],od) - - ([bd,PC],Xi,od) - - #data - -
RESULT	X - Set according to the last bit shifted out of the operand. N - Set if the result is negative. Cleared otherwise. Z - Set if the result is zero. Cleared otherwise. V - Always cleared C - Set according to the last bit shifted out of the operand.

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