wanted: low level debugger

[amos shapira]

Hello,
 I have to debug some program which I don't have the sources for and
 no symbol table, I need to be able to disassemble the relevant part
 and modify it (even in machine language).

 The only debugger I found is dbx, which is worthless (or allmost
 worthless) without the debugging info (edge is just a nice interface
 to dbx, so it worth the same)

 What I need is something like adb(1). Is there such a beast for my
 machine?

Thanks in advance,
- Amos Shapira

amoss at batata.bitnet
amoss at batata.huji.ac.il