SX28ACSLASHDP datasheet(37/51 Pages) PARALLAX

37 / 51 page

Parallax SX20AC/SX28AC

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Page 37 of 51

Rev 1.6 11/20/2006

Table 16-4: Native SX Instruction Set: Data Movement Instructions

Mnemonic,

Operands

Description

Clock Cycles

(Slow Mode)

Clock Cycles

(Turbo)

Opcode

Bits

Affected

MOV fr,W

Move W to fr (fr = W)

0000 001f ffff

none

MOV W,fr

Move fr to W (W = fr)

0010 000f ffff

MOV W,fr-W

Move (fr-W) to W (W = fr-W); complement of

carry bit is subtracted if CF bit in FUSEX register

is cleared to 0

0000 100f ffff

C, DC, Z

MOV W,#lit

Move Literal to W (W = lit)

1100 kkkk kkkk

none

MOV W,/fr

Move Complement of fr to W (W = fr ^ FFh)

0010 010f ffff

MOV W,--fr

Move (fr – 1) to W (W = fr – 1)

0000 110f ffff

MOV W,++fr

Move (fr = 1) to W (W = fr = 1)

0010 100f ffff

MOV W,<<fr

Rotate fr Left through Carry and Move to W

(W = >> ffr)

0011 010f ffff

MOV W,>>fr

Rotate fr Right through Carry and Move to W (W

= <> fr)

0011 000f ffff

MOV W,<>fr

Swap High/Low nibbles of fr and move to W (W =

<>fr)

0011 100f ffff

none

MOV W,M

Move MODE register to W (W = MODE), high

nibble is cleared

0000 0100 0010

none

MOVSZ W,--fr

Move (fr – 1) to W and Skip if Zero (w = fr – 1 and

skip next instruction if result is zero)

4 or 8 (skip)

1 or 2 (skip)

0010 110f ffff

none

MOVSZ W,++fr

Move (fr + 1) to W and Skip of Zero (W = fr +1

and skip next instruction if result is zero)

4 or 8 (skip)

1 or 2 (skip)

0011 110f ffff

none

MOV M,W

Move W to MODE register (MODE = W)

0000 0100 0011

none

MOV M,#lit

Move Literal to MODE register (MODE = lit)

0000 0101 kkkk

none

MOV !rx,W

Move W to Port Rx control register: rx <=> W

(exchange W and WKPND_B or CMP_B or rx =

w (move W to rx for all other port control

registers)

0000 0000 0fff

none

MOV !OPTION,W

Move W to OPTION register (OPTION = W)

0000 0000 0010

none

TEST fr

Test fr for zero (fr = fr to set or clear Z bit)

0010 001f ffff

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