Post by thread:[PICLIST] Macros for automatic banks management -

part 1 1278 bytes content-type:text/plain; charset=us-asciiHi All, Being tired of continuous watching of active bank, I've got an idea of macros for automatic bank management. (see the attached pictest.asm source) I wanted to keep the currently active bank in a symbol "xb_cur". When using any variable, I check the bank this var belongs to, and if necessary change the RP0 & RP1 bits, updating the "xb_cur". The macro "xmovwf" adds the necessary checks to the "movwf" instruction. Similar macros should be written to wrap other instructions. Certainly there is a problem with "entry points". When any label may be a target of "goto" or "call" instruction, one must take care to assure that bank 0 is active: xbank_set 0 target1 [...] xbank_set 0 goto target1 Well, everything works fine, when compiled with MPASM, but doesn't with gpasm (see the attached "lst" files). Does anybody know how to fix my macros for gpasm? Maybe someone knows a better way to implement this functionality? -- TIA & Greetings Wojciech Zabolotny http://www.ise.pw.edu.pl/~wzab http://www.debian.org Use Linux - an OS without "trojan horses" inside part 2 831 bytes content-type:text/plain; charset=us-ascii list p=16f877 include "p16f877.inc" xb_cur set 0 xbank_set macro xb_new IF (xb_new & 1) && !(xb_cur & 1) bsf STATUS,RP0 ENDIF IF (xb_cur & 1) && !(xb_new & 1) bcf STATUS,RP0 ENDIF IF (xb_new & 2) && !(xb_cur & 2) bsf STATUS,RP1 ENDIF IF (xb_cur & 2) && !(xb_new & 2) bcf STATUS,RP1 ENDIF xb_cur set xb_new ENDM xbank_vset macro xvar xbank_set (xvar/0x80) ENDM xmovwf macro xvar xbank_vset xvar movwf xvar endm org 0x10 xbank_set 0 movlw 0x34 xmovwf PORTB xmovwf PORTA xmovwf TRISB xmovwf TRISA xmovwf PORTB end part 3 2123 bytes content-type:application/octet-stream (decode) part 4 2699 bytes content-type:application/octet-stream (decode) part 5 142 bytes (decode)

On Tue, Sep 05, 2000 at 12:45:51PM -0700, James Newton wrote: > > Its really more than a macro should have to handle. It SHOULD be done by the > assembler. > But does any of the available assemblers make it? AFAIK it is the user's responsibility to watch the proper bank switching :-(. The high level languages (C, JAL, SIL) do it, but this is another story. -- Wojciech Zabolotny http://www.ise.pw.edu.pl/~wzab http://www.freedos.org Free DOS for free people! -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics

part 1 1352 bytes content-type:text/plain; charset=us-ascii[I'm resending this letter withe the proper [PIC]: label in the subject] Hi All, Being tired of continuous watching of active bank, I've got an idea of macros for automatic bank management. (see the attached pictest.asm source) I wanted to keep the currently active bank in a symbol "xb_cur". When using any variable, I check the bank this var belongs to, and if necessary change the RP0 & RP1 bits, updating the "xb_cur". The macro "xmovwf" adds the necessary checks to the "movwf" instruction. Similar macros should be written to wrap other instructions. Certainly there is a problem with "entry points". When any label may be a target of "goto" or "call" instruction, one must take care to assure that bank 0 is active: xbank_set 0 target1 [...] xbank_set 0 goto target1 Well, everything works fine, when compiled with MPASM, but doesn't with gpasm (see the attached "lst" files). Does anybody know how to fix my macros for gpasm? Maybe someone knows a better way to implement this functionality? -- TIA & Greetings Wojciech Zabolotny http://www.ise.pw.edu.pl/~wzab http://www.debian.org Use Linux - an OS without "trojan horses" inside part 2 831 bytes content-type:text/plain; charset=us-ascii list p=16f877 include "p16f877.inc" xb_cur set 0 xbank_set macro xb_new IF (xb_new & 1) && !(xb_cur & 1) bsf STATUS,RP0 ENDIF IF (xb_cur & 1) && !(xb_new & 1) bcf STATUS,RP0 ENDIF IF (xb_new & 2) && !(xb_cur & 2) bsf STATUS,RP1 ENDIF IF (xb_cur & 2) && !(xb_new & 2) bcf STATUS,RP1 ENDIF xb_cur set xb_new ENDM xbank_vset macro xvar xbank_set (xvar/0x80) ENDM xmovwf macro xvar xbank_vset xvar movwf xvar endm org 0x10 xbank_set 0 movlw 0x34 xmovwf PORTB xmovwf PORTA xmovwf TRISB xmovwf TRISA xmovwf PORTB end part 3 2123 bytes content-type:application/octet-stream (decode) part 4 2699 bytes content-type:application/octet-stream (decode) part 5 142 bytes (decode)