Can a 68360 use EDO memory?

Can a 68360 use EDO memory?

Post by Mik » Fri, 05 Sep 2003 06:01:17



Can a 68360 use EDO memory?

I have just used FPM dram, but it seems easier to find EDO.

Is it possible?

-Mike

 
 
 

Can a 68360 use EDO memory?

Post by Paul McKneel » Mon, 15 Sep 2003 01:17:01



> Can a 68360 use EDO memory?

> I have just used FPM dram, but it seems easier to find EDO.

> Is it possible?

> -Mike

It can't use it in EDO mode but these should work in standard mode.

Paul

 
 
 

1. using shared memory to talk to physical memory on a Motorala 147

I'm having trouble talking to physical shared memory on a Motorola 147
V/68 system.  I get the id with:

   if ((id = shmget(key,
                    0x0c,
                    (IPC_CREAT | IPC_PHYS | IPC_NOCLEAR | IPC_CI),
                    (int)(0xff00 | 0xffff00) )) == -1)
   {
      perror ("shmget");
      exit (-1);
   }

And then set the permissions:

   buf.shm_perm.mode = 0666;

   if (shmctl(id, IPC_SET, &buf) == -1)
   {
      perror ("shmctl");
      exit (-1);
   }

And then map for read and write:

   if ((addr = shmat(id,
                     (char *)0,
                     (0) )) == (char *)-1)
   {
      perror ("shmctl");
      exit (-1);
   }

The address is different, than 0xff00, but I expected this due to
virtual to phsyical translation.  When I try to read or write to this
address I get a bus error:

   printf("Address = 0X%X\t Data = 0X%X\n", addr, *addr);

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