Mercurial > public > hwos_code

view src/isr.inc @ 359:2be48ccfa9de

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
make AUTO SP available on OSTC2 hardware
author heinrichsweikamp
date Mon, 03 Aug 2015 17:27:05 +0200
parents 11d4fc797f74
children ca4556fb60b9
line wrap: on
line source

;=============================================================================
;
;   File isr.inc
;
;
;   Copyright (c) 2011, JD Gascuel, HeinrichsWeikamp, all right reserved.
;=============================================================================
; HISTORY
;  2011-08-06 : [mH] moving from OSTC code

SAFE_2BYTE_COPY MACRO  from, to
        local   retry
retry:
        movff   from+1,WREG             ; High byte in W.
        movff   WREG,to+1               ; and destination.
        movff   from+0,to+0             ; Copy low byte.
        movff   from+1,TABLAT           ; another bank-safe read.
        xorwf   TABLAT,W                ; High byte changed ?
        bnz     retry
        ENDM