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Problems to execute code

Hello

I'm trying to use my microcontroler-
system with the Keil-Software.

The sytem have got the following
prefereces:
- SAB 80c535
- 32k RAM
- 32k ROM
-Memory-architekture:
(external memory)

  CODE          XDATA
--------     ---------  FFFFh
|      |     |       |
| RAM  |     | RAM   |
| 32kb |     | 32kb  |
|      |     |       |
--------     ---------  8000h
|      |     |       |  7FFFh
| ROM  |     |       |
| 32kb |     ---------
|      |     | LCD   |  0001h
|      |     |       |
--------     ---------  0000h

(The RAM is physically alwayas the
same in CODE and XDATA)

In my opinion this is a von Neumann
architekture.

Facts:
The monitor (mon51) runs properly. I
can communicate with the system.
The debbugger also communicates with the
system. But something with the code
download doesn't work. dScope (DK51)
reports Error 22.
When I try it with the uV2 debugger, the
code seems to be downloaded (statusbar of
downloading counts up to 100%), but I can't
Execute them (but no errors are reported).0

In the target-options I configured that
"Off-chip-code memory" starts at 0000h and
"Off-chip XDATA memory" starts at 8000h.
This Values I used also to generate the
monitor file for de EPPROM.

Ok.. I hope that somebody have got a solution
for my problem...

Yours cincerly
Michael Bigler