Movfw? - Electronic Circuits Projects Diagrams Free

asp1987 · 13th February 2008, 07:31 PM

Is there any command like this- movfw?
When I wrongly typed it, MPLAB showed it in 'blue' just like any other command. Also it didn't show any error when 'build all' was clicked.I was creating a program for 16F877A. Couldn't find anything like that in the datasheet.But found many when I searched on this forum.

What could be the reason?

wmmullaney · 13th February 2008, 07:36 PM

MOVFW does not exist,(just see the data sheet) but, say you want to mov carry(C) to W, you use the instruction MOVF C,W.

asp1987 · 13th February 2008, 07:38 PM

Thanks...

**Nigel Goodwin** · 13th February 2008, 07:44 PM

MOVFW doesn't exist as a PIC instruction, but it DOES exist as an assembler directive, and creates the 'MOVF Address, W' line.

Gayan Soyza · 14th February 2008, 04:10 AM

Quote:

Originally Posted by asp1987

Is there any command like this- movfw?

There are Special Instruction Mnemonics see the attached document.

blueroomelectronics · 14th February 2008, 05:03 AM

And pretty color ones at the back of my Firefly manual

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13th February 2008, 07:31 PM	(permalink)
asp1987	Movfw? Is there any command like this- movfw? When I wrongly typed it, MPLAB showed it in 'blue' just like any other command. Also it didn't show any error when 'build all' was clicked.I was creating a program for 16F877A. Couldn't find anything like that in the datasheet.But found many when I searched on this forum. What could be the reason? Last edited by asp1987; 13th February 2008 at 07:35 PM. Reason: To add more details.

13th February 2008, 07:36 PM	(permalink)
wmmullaney	MOVFW does not exist,(just see the data sheet) but, say you want to mov carry(C) to W, you use the instruction MOVF C,W. __________________ Regards, William Mullaney "HOPE for the best, EXPECT the worst, ACCEPT whatever comes." http://wiliamsville.myminicity.com/ http://wiliamsville.myminicity.com/ind/ http://wiliamsville.myminicity.com/tra/

13th February 2008, 07:44 PM	(permalink)
Nigel Goodwin	MOVFW doesn't exist as a PIC instruction, but it DOES exist as an assembler directive, and creates the 'MOVF Address, W' line. __________________ PIC programmer software, and PIC Tutorials at: http://www.winpicprog.co.uk

14th February 2008, 05:03 AM	(permalink)
blueroomelectronics	And pretty color ones at the back of my Firefly manual __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com