Olin Lathrop wrote:
> Can you send the whole module, or at least a stripped down version that
> still exhibits the symptom?


Hi.
Below is a "compressed" (comments and ISR code removed)
of my version. Thanks for your time !
Jan-Erik.



;
;   Interrupt service and related routines.
;
         include "D02.inc"
         extern_flags        ;declare global flag bits EXTERN
;
;***********************************************************************
;
;   Configuration constants.
;
save_fsr equ     true        ;indicate whether ISR must save/restore FSR
niregs   equ     0           ;num of IREGn private interrupt routine registers
;
;
         defram  gbankadr
;
;
         defram  0

status_save res  1           ;saved copy of STATUS, nibbles swapped
  if save_fsr
fsr_save res     1           ;saved copy of FSR (if FSR save enabled)
    endif
  if ncodepages > 1
pclath_save res  1           ;saved copy of PCLATH (if multiple code pages)
    endif
;
;   Define the IREGn general register for use during an interrupt.
;
ii       set     0
  while ii < niregs          ;once for each IREG register to define
ireg#v(ii) res   1           ;define this IREGn register
         global  ireg#v(ii)  ;make is global for interrupt code in other modules
ii       set     ii + 1      ;advance to next IREG number
    endw                     ;back to define next IREG
;
;   This state is private to the interrupt service routine and must always
;   be accessible regardless of the current direct register bank setting.
;
         udata_shr
w_save   res     1           ;saved W during interrupt, mapped to all banks

.intr    code
;
;***********************************************************************
;
;   Subroutine INTR_INIT
;
[The rest is various IRS's...]


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