Post by thread:[PIC]:What is a bank?

When I compile this program (I cut it from someone elses larger program to get me going): LIST P=16F84, R=DEC Start BSF STATUS,RP0 ;Select bank 1 CLRF TRISB ;Select Output on all PORTB bits BCF STATUS,RP0 ;Select bank 0 CLRF PORTB ;Turn off all LEDs BSF PORTB,0 ;Turn on LED0 END I get this message: Message[302] C:\SETH\~PICPR~1\LEDRUN~1\LED.ASM 29 : Register in operand not in bank 0. Ensure that bank bits are correct. What does it mean? And, what is a bank? (anything to do with pages?) Thanks for the help, Seth -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email spam_OUTlistservTakeThisOuTmitvma.mit.edu with SET PICList DIGEST in the body

At 01:29 PM 5/26/01 +1200, Seth Fischer wrote: >When I compile this program (I cut it from someone elses larger program >to get me going): > >LIST P=16F84, R=DEC >Start BSF STATUS,RP0 ;Select bank 1 > CLRF TRISB ;Select Output on all PORTB bits > BCF STATUS,RP0 ;Select bank 0 > CLRF PORTB ;Turn off all LEDs > BSF PORTB,0 ;Turn on LED0 > > END > >I get this message: > >Message[302] C:\SETH\~PICPR~1\LEDRUN~1\LED.ASM 29 : Register in operand >not in bank 0. Ensure that bank bits are correct. > >What does it mean? And, what is a bank? (anything to do with pages?) Banks and pages are that which you do not have in the atmel AVR. In the pic, the registers and memory are carved into two or four banks. While you are pointing at one bank, you cannot access anything in the other bank. Pages are basically the same thing, but in EPROM. (program memory) They are, IMHO, a giant pain in the ass. Pic: bsf status,rp0 bsf trisb,1 bcf status,rp0 btfss portb,0 Total, 16 xtal cycles (And beware, there are problems with BCF and BSF when used with port registers.) The same thing is four cycles on the AVR. Later, we'll talk about why on the pic, everything has to funnel through the W register, and in the AVR, you can use almost every register, for everything. -- Dave's Engineering Page: http://www.dvanhorn.org I would have a link to FINDU here in my signature line, but due to the inability of sysadmins at TELOCITY to differentiate a signature line from the text of an email, I am forbidden to have it. -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email .....listservKILLspam@spam@mitvma.mit.edu with SET PICList DIGEST in the body