Memory Settings for uVision2 Debugger/Monitor

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Author
Phong Ha

Posted
10-Mar-2003 23:08 GMT

Toolset
C166

Memory Settings for uVision2 Debugger/Monitor

I am using the Phytec MiniMODUL C167 with 2M of RAM. The Start167 assemble file (comes with the module) sets the RAM into two 1MB banks, each access by different chip selects.

The Monitor program provided with the uVision2 Debugger defaults the first RAM bank to start at address 0x0. Under the uVision2 Target options setting, I enabled and set the second RAM bank to match with the settings in Start167 at address 0x300000.

The Debugger/Monitor does not seemed to run properly (Debugger "arrow" does not follow source code during single-stepping, data does not get passed into variables correctly).

My uVision2 settings for debugging with the Monitor program are:

ROM  0x0     (start)  0xE000 (size)
RAM  0x10000 (start)  0x8000 (size)
RAM  0x300000(start)  0x100000(size)

The Debugger/Monitor seemed to work fine if the RAM definition at 0x300000 is not there.

Probing the Keil documentation in the install directory, I found:

BOOTSTRAP MODE
==============

Memory map:
 00:0000h - 00:EFFFh  free RAM
 00:F000h - 00:FFFFh  internal RAM and SFR's
 01:0000h - 0F:E9FFh  free RAM (optional)
 0F:EA00h - 0F:EBFFh  RAM used by Monitor (Data Area)
 0F:EC00h - 0F:FFFFh  RAM used by Monitor (Code Area)
 10:0000h - 1F:FFFFh  optinal free RAM (optional)
 20:0000h - 23:FFFFh  Flash ROM
 24:0000h - ....      Flash ROM (optional)

I tried placing the second RAM bank (not all of the 1M since does not fit) also to be within the "Free RAM" area but this does not work.

Suggestions?

Thanks,
Phong

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