Email: Password: Remember Me | Create Account (Free)

Back to Subject List

Old thread has been locked -- no new posts accepted in this thread
09/24/12 01:30
Read: 568 times

#188430 - memory access
Responding to: Jim Granville's previous message
Beautiful! gotta check this out now. Thanks.

.db is going to place bytes in CODE/ROM,
* enable XDATA
* use MOVC to read Code/Flash
* use MOVX to write to XDATA
* Use MOVX to read XDATA.

Gotta say, some of the 6440 mem features are a bit confusing
sram 0..FF,
Extra sram 000..FFF,
flash data ram 1000..2FFF
xram 3000..FFFF
code, data, Cdata, Edata, Xdata..
different memory types-Cseg,Dseg,Eseg,Xseg,Iseg..
ps. yes- love the auto increment and dual dptrs.

List of 17 messages in thread
.db instr does not work like before with movx A,@dptr      Rick Gebhardt      09/23/12 22:16      
   Brain Fade ?      Jim Granville      09/23/12 22:57      
      memory access      Rick Gebhardt      09/24/12 01:30      
         Did you ever try the Maxim/Dallas DS89C4x0?      Richard Erlacher      09/24/12 10:18      
   Handle the dptr with care...      Kai Klaas      09/24/12 10:38      
      Dallas, Dptr, and DB      Rick Gebhardt      09/24/12 21:36      
         not really      Erik Malund      09/25/12 08:50      
            Perhaps what he means is ...       Richard Erlacher      09/25/12 11:28      
               Make no mistake...       Kai Klaas      09/25/12 12:44      
                  and also the XMEGA      Jim Granville      09/25/12 23:36      
                     XMEGA ADC      Maarten Brock      09/26/12 03:00      
                        I agree...      Kai Klaas      09/26/12 17:18      
               those samples that Andy and others were expecting       Andy Neil      09/25/12 15:13      
            Is it 2007 already??      Andy Neil      09/25/12 15:17      
               That's why I refer to them as MAXIM/DALLAS       Richard Erlacher      09/25/12 21:52      
                  Part Numbers ?      Jim Granville      09/25/12 23:29      
                     None in particular ...       Richard Erlacher      09/26/12 16:01      

Back to Subject List