Microsoft KB Archive/66655

PRB: Windows CodeView Displays ????:???? for Memory Values ID Number: Q66655

3.00 WINDOWS

SYMPTOMS When the Microsoft CodeView for Windows window-oriented debugger is used to display memory with such commands as the following, CodeView for Windows displays question marks rather than the values contained in memory:

dw 0000:0000 CAUSE 0000:0000 is not a valid protected mode address. The 0000 value is a legal protected mode segment register value, but it is not a valid segment selector.

RESOLUTION To display memory at real mode addresses, such as “0000:0000”, use a debugger that can interpret real mode addressing, such as WDEB386. WDEB386 is provided with the Microsoft Windows Software Development Kit (SDK).

Additional reference words: 3.00