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

Back to Subject List

Old thread has been locked -- no new posts accepted in this thread
???
01/16/09 17:32
Read: times


 		 #161567 - [8052] Connect periphery over the XRAM Port
Hey guys,

we´re part of an uni project and we are working since some time ago with the 8052(t51).
We have load the core on a XILINX Spartan 3-e Board and tested the display, uART, Timer and that stuff succesfully.
Now we got a working CAN-Controller (it works for sure, because some of our mates can use him with other cores like HC08 or an AVR).
Our idea was, take the XRAM-Lines of our Core (because we don´t have an external RAM) and connect the CAN with them.

So far, so good ;-)

Our problem is, that the CAN will never be enabled, because we don´t know how to push the signal "ext_ram_en" to "1". (Signal in 8052.vhd)

Does somebody has an idea or some tipps for us?
Is it generally possible to connect other things with the XRAM-Lines?

We put a lot of energy in this project, but we are still at the beginning. Still learning step by step :-)


Christian


List of 30 messages in thread
TopicAuthorDate
[8052] Connect periphery over the XRAM Port            01/01/70 00:00      
   plus            01/01/70 00:00      
   Which Spartan-3E board?            01/01/70 00:00      
      SFR Space            01/01/70 00:00      
         Is that really the case in this instance?            01/01/70 00:00      
            I s'pose            01/01/70 00:00      
               It's a core, intended for FPGA, not a chip.            01/01/70 00:00      
   Thanks            01/01/70 00:00      
      Why go through all the suffering?            01/01/70 00:00      
      XDATA access vs SFR access            01/01/70 00:00      
         Perhaps they're in over their heads            01/01/70 00:00      
            Having fun?            01/01/70 00:00      
               Not exactly ...            01/01/70 00:00      
                  Talk to the OP, not about            01/01/70 00:00      
                     I would bet they've seen the light            01/01/70 00:00      
                        So whatever happened to...            01/01/70 00:00      
                           Ironic, isn't it?            01/01/70 00:00      
                              My point exactly!            01/01/70 00:00      
                                 Perhaps the O/P wasn't prepared            01/01/70 00:00      
                                    Yeah you´re (sometimes) right            01/01/70 00:00      
                                       It's about using what's already there            01/01/70 00:00      
                                          in the end            01/01/70 00:00      
                                             It doesn't always work in that way            01/01/70 00:00      
                                          Running before you can walk            01/01/70 00:00      
                                             Maybe, but first of all, there's no example ...            01/01/70 00:00      
                                                not really            01/01/70 00:00      
                                                   WTF???            01/01/70 00:00      
                                                   Let us not go over the top            01/01/70 00:00      
                                                      Language barrier?            01/01/70 00:00      
                                                         No ... I was agreeing with your comment            01/01/70 00:00      

Back to Subject List