If you look at your code all you will need is to
define D1 through D5. The code will reuse these for
each routine. Since you are not saving something that
needs to be reused later, then reusing the registers
shouldn't be a problem. Your code could look like
this:

         cblock
         d1
         d2
         d3
         d4
         d5
         endc

;All your delays go here


Hope this helps!

Best regards,
Steven Kosmerchock
Phoenix, Az USA


--- Aslam Jallali <aslam_jallali@HOTMAIL.COM> wrote:

> Hello to you
> Using the delay generator from
> I have generated 21 different delay routines. (I
> need these for different
> LED flash sequences). The question is: do I need to
> define 21 different
> temporary registers in CBLOCK? i.e. see below
> please. What is $+2? In the
> manual it says return program counter (see my
> comment beside the code line)
> I appreciate your input & advice on this one ;-)
> Regards
>
>
> CBLOCK 0x20   ; RAM starts at address 20h
> D1
> D2
> D3
> .
> .
> .
> D21
> ENDC
>
> Follwoing are the two example and then the third one
> is that I merge them.
> ; Delay = 0.2 seconds
>         cblock
>         d1
>         d2
>         endc
>
>                         ;199998 cycles
>         movlw   0x3F
>         movwf   d1
>         movlw   0x9D
>         movwf   d2
> Delay_0
>         decfsz  d1, f
>         goto    $+2             ; Does this mean go
> two lines back (delay_0)?
>         decfsz  d2, f
>         goto    Delay_0
>
>                         ;2 cycles
>         goto    $+1
>
> ; Delay = 0.4 seconds
>         cblock
>         d1
>         d2
>         d3
>         endc
>
>                         ;399999 cycles
>         movlw   0x36
>         movwf   d1
>         movlw   0xE0
>         movwf   d2
>         movlw   0x01
>         movwf   d3
> Delay_0
>         decfsz  d1, f
>         goto    $+2
>         decfsz  d2, f
>         goto    $+2
>         decfsz  d3, f
>         goto    Delay_0
>
>                         ;1 cycle
>         nop
>
> ; delay for 0.2 and 0.4 can I call form this code
> upon delay 0.2s or ; ;
> 0.4s or if I add more into it
>
>         cblock
>         d1
>         d2
>         d3
>         d4
>         d5
>
>         endc
>
> delay_0.2s              ;199998 cycles
>         movlw   0x3F
>         movwf   d1
>         movlw   0x9D
>         movwf   d2
> Delay_0.2               ; note 0.2 and 0.2s
>         decfsz  d1, f
>         goto    $+2
>         decfsz  d2, f
>         goto    Delay_0.2
>
>                         ;2 cycles
>         goto    $+1
>
> delay_0.4s                      ;399999 cycles
>         movlw   0x36
>         movwf   d3
>         movlw   0xE0
>         movwf   d4
>         movlw   0x01
>         movwf   d5
> Delay_0.4
>         decfsz  d3, f
>         goto    $+2
>         decfsz  d4, f
>         goto    $+2
>         decfsz  d5, f
>         goto    Delay_0.4
>
>                         ;1 cycle
>         nop
>
>
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