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Karen O · 29th Sep 2020, 8:55 am

PICs tend to have large amounts of program flash compared to other types of memory. This permits a very verbose style of coding that enables 'hard-wired' code to replace the more traditional program loop and indirection. For example, if I were feeding eight graphics bytes to the serial port:

MOVF BUF+0,W
MOVWF TXREG
..
..
MOVF BUF+1,W
MOVWF TXREG
..
..
MOVF BUF+2,W
MOVWF TXREG
..
..
MOVF BUF+3,W
MOVWF TXREG
..
..
etc.

Indirection on the PIC is so rudimentary as to be nearly absent. I use it occasionally but generally I use repeated hard-coded methods. Who cares if the final program is big as a result?

29th Sep 2020, 8:55 am	#242
Karen O Rest in Peace Join Date: Jul 2011 Location: Bridgnorth, Shropshire, UK. Posts: 787	Re: Mk14 vdu PICs tend to have large amounts of program flash compared to other types of memory. This permits a very verbose style of coding that enables 'hard-wired' code to replace the more traditional program loop and indirection. For example, if I were feeding eight graphics bytes to the serial port: MOVF BUF+0,W MOVWF TXREG .. .. MOVF BUF+1,W MOVWF TXREG .. .. MOVF BUF+2,W MOVWF TXREG .. .. MOVF BUF+3,W MOVWF TXREG .. .. etc. Indirection on the PIC is so rudimentary as to be nearly absent. I use it occasionally but generally I use repeated hard-coded methods. Who cares if the final program is big as a result?