What is Btfsc?
BTFSC (Bit test file skip if clear) BTFSS (Bit test file skip if set) Meaning, if the logic at location f is high (1), then the BTFSC function will not skip the next line of coding. However, the BTFSS function will skip the next line of coding if the logic level is 1.
What is PIC in assembly language?
WREG register in pic microcontroller assembly language. PIC microcontroller has many registers for arithmetic and logic operations. The 8-bit WREG register is most frequently used register in PIC micro-controllers. It is often called accumulator or Working Register. It can be easily initialized with a constant.
What does Movwf mean?
MOVWF Instruction:- The MOVWF instruction tells the CPU to move, in reality copy, the source register of WREG to a destination in the file register (F). After this instruction is executed, the location in the file register will have the same value as register WREG.
What is BCF Assembly?
BCF is a resetting command instruction used for performing reset operations for a specified bit or specified register (simply called bit clearing flag or bit clearing command). Normally BCF resets the specified bit in f registers content.
What is different between the Movwf and Movf instructions?
Examine the difference between the MOVWF and MOVF instructions….SECTION III-7: MOVF Instruction in the PIC micro-controller.
| Program to get data from the Special function registers of the Port B and send it to the Special function register of PORT C continuously. | |
|---|---|
| MOVWF PORTC | ;send it to Port C |
| GOTO AGAIN | ;keep doing it forever |
What is BSF and BCF?
BCF — Bit Clear f. BSF — Bit Set f. BTFSC — Bit Test f, Skip if Clear.
What for BCF is used in processor?
The BCF latches the multiplexed address data bus of the 8085 to generate ADLAT[7:0] which can be used to directly drive the 8085 memory address bus. It also latches the upper address bits from the 82C37 during a DMA cycle and outputs DADLAT[15:8] which can also directly drive the 8085 memory address bus.
What is file register in pic?
A register is a place inside the PIC which used to read or write the data/program. The memory of the PIC is divided into a series of registers. Each of the registers has its own address and memory locations. These addresses are normally denoted by using hexadecimal numbers.
How many types of PIC microcontroller are there?
Besides considering the four classifications of the PIC microcontroller that rely on the internal architecture, understanding the different PIC microcontrollers’ types becomes ideal before the design process. Classifications include baseline PIC, enhanced mid-range PIC, mid-range PIC, and PIC18.
What is FSR and Indf?
File register 00 (INDF) is used for indirect file register addressing. The address of the register required is placed in the file select register (FSR). When data is written to or read from INDF, it is actually written to or read from the file register pointed to by FSR.
What is the difference between btfsc and PIC instruction?
This is similar to the BTFSC instruction, except that the PIC will skip the next instruction if the bit we are testing is set to 1, rather than 0. This instruction will set the entire contents of a register to 0.
How do I use btfsc instruction?
Well, we can use BTFSC. It says Bit Test Register F, and Skip If It Is Clear. This instruction will test the bit we specify in the register. If the bit is a 0, the instruction will tell the PIC to skip the next instruction. We would use this instruction if we wanted to test a flag, such as the carry flag.
What does B mean in a 2tcy instruction?
If bit ‘b’ in register ‘f’ is ‘0’, the next instruction is executed. If bit ‘b’ is ‘1’, then the next instruction is discarded and a NOP is executed instead, making this a 2TCY instruction Click to expand… What I didn’t understand is what the heck should the b value do.