Show code at address in disassembly window

It means that if I implement two program memory<A,B>, the address of the two memory are the same. At the first,I download program to the one memory <A> by Keil IDE, and then execute the program. In this program, I set some flag to switch memory mapping to the other one. This action doesn't execute writing memory, so the cache don't be update.
It shows A memory data in disassembely window, but in fact it execute B memory program.


eelin

It means that if I implement two program memory<A,B>, the address of the two memory are the same. At the first,I download program to the one memory <A> by Keil IDE, and then execute the program. In this program, I set some flag to switch memory mapping to the other one. This action doesn't execute writing memory, so the cache don't be update.
It shows A memory data in disassembely window, but in fact it execute B memory program.


eelin

In this case you need to expand the Invalidate function so that it includes also the code space. Take again a close look to the SampTarget DLL that is provided with the AppNote.

/*
 * Invalidate everything which may be invalid after Go or Step
 *  (Registers, Caches, etc.)
 */

void Invalidate (void)  {
  RegUpToDate = 0;                       // invalidate Registers
  ClearCaR ((amDATA << 24)  | 0x00, 0);  // invalidate data-cache
  ClearCaR ((amIDATA << 24) | 0x80, 128);// invalidate idata-cache
  ClearCaR ((amXDATA << 24) | 0x0000, 0x10000);// invalidate xdata-cache
}

Dear Sir,
Thanks for your help. I had already implemented my design. But sometimes when I use "Show code at address" function, the IDE don't show the address which I input in disassembly window. For example, I expect show code at C:0x200, but it always show code at B02:0x8005 or some the other address.
Why??


eelin

"Show Code at Address" uses the debug information that is part of the program.

You should be able to duplicate this problem also in the simulator. Please send your test code to us, so that we can duplicate this behaviour.

Dear Sir,
Yes, this problem happened also in the simulator. As long as operate by the following step, it will be happened.
1. Into debug mode
2. Show code at addr c:0x20000
3. The pointer point at this line,
and the yellow color shows in this line <c:0x20000>
4. Show code at addr c:0x0 or the other address again.
5. It still shows disassembly code at c:0x20000 in disassembly window.
If I go step 1->2->4 and ignore step 3, it can work correctly.


eelin

I tried to duplicate this using the example Keil\C51\Examples\Bank_EX1. Everything works here.

The code address C:0x20000 does not exists. Instead the bank0 has the address B0:0 (bank1 B1:0). Maybe this is the problem.

Dear Sir,

I use the the example Keil\C51\Examples\Bank_EX1 in simulator. Even though I shows code at B01:0x8000,this situation will be happened. There are real code in here.Are you sure that you duplicate this by doing all of the step, especially step3? Because I found that is main reason.

eelin

Still unable to duplicate your problem in the simulator. Please send screen pictures to support.intl@keil.com so that we get a better idea of the problem.