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barcode reader in asp.net mvc incfsz Reg, d in Software
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00 0000 0xx0 0000 00 0000 0110 0010
ret e
GIE = 1 SP = SP - 1 PC = [SP] w = k SP = SP 1 PC = [SP] SP = SP 1 PC = [SP] Temp = C C = (Reg >> 7) & 1 if (d == 1) Reg = (Reg << 1) + Temp else w = (Reg << 1) + Temp endif Temp = C C = Reg & 1 if (d == 1) Reg = (Reg >> 1) + (Temp << 7) else w = (Reg >> 1) + (Temp << 7) endif _TO = 1 _PD = 0 w = k + (w ^ 0xFF) + 1 C = (k + (w ^ 0xFF) + 1) > 0x0F Z = ((k + (w ^ 0xFF) + 1) & 0xFF) == 0 DC = ((k & 0x0F) + ((w ^ 0xFF) & 0x0F) + 1) > 0x0F 00 0000 0000 1001 retlw k
11 01xx kkkk kkkk
return rlf Reg, d
00 0000 0000 1000 00 1101 dfff ffff
Rotate the register right through carry and optionally save the result in the w register
rrf Reg, d
00 1100 dfff ffff
Go into standby mode (indeterminate number of cycles used) Subtract the w register contents from immediate and store the result in the w register sleep sublw k
00 0000 0110 0011 11 110x kkkk kkkk
(Continued ) TABLE B.5 DESCRIPTION
MID-RANGE PIC MICROCONTROLLER INSTRUCTION SET (CONTINUED) INSTRUCTION OPERATION OP CODE
Subtract the w register contents from register and optionally store result in the w register
subwf Reg, d
if (d == 1) Reg = Reg + (w ^ 0xFF) + 1 else w = Reg + (w ^ 0xFF) + 1 endif C = (Reg + (w ^ 0xFF) + 1) > 0xFF Z = ((Reg + (w ^ 0xFF) + 1) & 0xFF) == 0 DC = ((Reg & 0x0F ) + ((w ^ 0xFF) & 0x0F) + 1) > 0x0F if (d == 1) Reg = ((Reg & 0xF0) >> 4) + ((Reg & 0x0F) << 4) else w = ((Reg & 0xF0) >> 4) +((Reg & 0x0F) << 4) endif TRIS(Port) = w 00 0010 dfff ffff
Swap the upper and lower nibbles of a register and optionally store result in the w register
swapf Reg, d
00 1110 dfff ffff
Move the contents of the w register into the tristate control register of the port; use of this instruction is not recommended XOR immediate with the w register XOR register contents with the w register and optionally store results in the w register tris Port
00 0000 0110 0ppp
xorlw k xorwf Reg, d
W = w ^ k Z = (w ^ k) == 0 If (d == 1) Reg = Reg ^ w else w = Reg ^ w endif Z = (Reg ^ w) == 0 11 1010 kkkk kkkk 00 0110 dfff ffff
TABLE B.6 INSTRUCTION
PIC18C INSTRUCTION SET FORMAT OPERATION BIT PATTERN
Add a constant to the w register and store the result in the w register
addlw Constant
wreg = wreg + Constant if (((wreg > 0) & (Constant > 0)) & ((wreg + Constant) > 0x07F)) OV = 1 else OV = 0 endif if ((wreg + Constant) > 0x0FF) C = 1 else C = 0 endif if ((wreg + Constant) & 0x080) != 0) N = 1 else N = 0 endif if (((wreg & 0x0F) + (Constant & 0x0F)) > 0x0F) DC = 1 else DC = 0 endif if (((wreg + Constant) & 0x0FF) == 0x000) Z = 1 else Z = 0 endif 0000 1111 kkkk kkkk
(Continued ) TABLE B.6 INSTRUCTION
PIC18C INSTRUCTION SET (CONTINUED) FORMAT OPERATION BIT PATTERN
Add w register to the contents of Reg and store the result according to d result in w register; if a is set, then BSR used for Reg, else access bank is used. addwf Reg, d, a
if ( d == 1) wreg = wreg + Reg else Reg = wreg + Reg endif if (((wreg > 0) & (Reg > 0)) & ((wreg + Reg) > 0x07F)) OV = 1 else OV = 0 endif if ((wreg + Reg) & 0x080) != 0) N = 1 else N = 0 endif if ((wreg + Reg) > 0x0FF) C = 1 else C = 0 endif if (((wreg & 0x0F) + Reg & 0x0F)) > 0x0F) DC = 1 else DC = 0 endif if (((wreg + Reg) & 0x0FF) == 0x000) Z = 1 else Z = 0 endif
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