How to use DT_INT with 12F683

[Dick Ivers]

I think this is an old issue that's been discussed before but I can't seem to re-create the solution.

Using device 12F683

When I INCLUDE "DT_INTS_14.bas" the program compiles but there is an error message saying "No access to RAM at $70, change to $20 SYSTEM" . I've seen this before, and I thought the answer was to comment out $70 and un-comment $20 . When I do this,and at the same time change the name of the INCLUDE to "DT_INTS_14 test.bas, the compiler cannot open the INCLUDE. What is wrong?

[Darrel Taylor]

Using $20 is right, and you'll need wsave1 at $A0.
But I don't get the part about changing the name of the include.

[Dick Ivers]

Darrell,
Yes, you are right of course and the mods are working.
I thought it would be best to save the modified file under a different name for future use with the same chip. That seems to be a bad idea, or was done incorrectly. In any case, thanks.
Dick

[Darrel Taylor]

Either you have a very old version of DT_INTS-14, or you're doing it in the wrong place.
You shouldn't modify the include file.

Make sure you have the latest version.
http://www.darreltaylor.com/DT_INTS-14/downloads.htm

added by Archangel 08/26/2015 http://web.archive.org/web/201305180.../downloads.htm


Then in your program, copy the variables from the include and uncomment the wsaves you need for that program.

;-- Place a copy of these variables in your Main program -------------------
;--   The compiler will tell you which lines to un-comment                --
;--   Do Not un-comment these lines in the include                        --
;---------------------------------------------------------------------------
;wsave   VAR BYTE    $20     SYSTEM      ' location for W if in bank0
;wsave   VAR BYTE    $70     SYSTEM      ' alternate save location for W 
                                         ' if using $70, comment wsave1-3
' --- IF any of these three lines cause an error ?? ------------------------
'       Comment them out to fix the problem ----
' -- Which variables are needed, depends on the Chip you are using -- 
;wsave1  VAR BYTE    $A0     SYSTEM      ' location for W if in bank1
;wsave2  VAR BYTE    $120    SYSTEM      ' location for W if in bank2
;wsave3  VAR BYTE    $1A0    SYSTEM      ' location for W if in bank3
' --------------------------------------------------------------------------

[Dick Ivers]

Darrell,
I did as you suggested. It makes sense as a way to keep track of the variables in different programs. However, I now get this message:
"Wrong version of ReEnterPBP.bas -Ver 3.4 or higher req'd"
The file I downloaded is dated August 13, 2010

Dick

[Darrel Taylor]

That version of ReEnterPBP is in the download.

Extract both files in the .zip to your PBP folder.
And make sure you don't have a ReEnterPBP.bas or DT_INTS-14.bas file in your project folder.

[Dick Ivers]

Darrell,

You are right again. I forgot to delete the old ReEnterPBP.bas from the project file. Yes, I did delete the old DT_INTS-14.bas file.
It all works now.
Dick