ASM

COM assembly program
Hi there How was the data segment register loaded in the old COM file format? I know that COM executable files contain their code, data, stack, etc all in 64KB. So, I'm guessing that DS=CS. I seem to remember that these old programs had the lines MOV AX, data MOV DS, AX How can you possibly know what "d... 7 Aug 2006 02:24

registers and types
> Fourth, one of the problems with decompilation to C is that C implements stronger type checking than assembly. A simple example is that an Intel register can be used as a address (i.e., pointer), 32-bit value, 16-bit value, 8-bit value, without creating any problems. When decompiled to C, each register ... 4 Aug 2006 20:36

Using IDA Pro v4.3
Hi all, For the past couple of years, Rene "Betov" Tournois has been trashing IDA Pro claiming that you cannot easily create source files that can be reassembled with it, and claiming that it has serious defects in the code generation. Recently, he suggested that someone show us all how "easy" IDA Pro is to use,... 3 Aug 2006 20:02

Bootloader tutorial
Can anyone recommend a tutorial on how to write a bootloader? Thanks. ... 31 Jul 2006 19:26

Apple II Debugger
johnzulu[at]yahoo.com wrote: Where can I get the LISA program? Any clue. Sounds a good way to learn 68000 assembly. John Actually, it's a 6502 assembler for the Apple II. Although Apple Computer built a machine called the "Lisa", the LISA assembler (Lazer's Interactive Symbolic Assembler) predated th... 2 Aug 2006 10:21

RosAsm is a loser
In news:XnF9807CCE5E4FC6betovfreefr(a)212.27.42.134, Betov <betov(a)free.fr> typed: You can twist your swindling the way you like, your HLL Pre-Parser, does nothing else, here, but translating: mov( 0, eax ); into the standard: mov eax, 0 and passing it down to an obfuscated Assembl... 26 Jul 2006 17:42

Another bad link?
http://radasm.visualassembler.com/ ... 21 Jul 2006 12:13

TSS > CR3
Hi I found this: When we create the *first* task, and try to jump to it, it will not push the current CR3 value to current TSS before jump to the new task, why? IA32 supposed to do that. thanks from Peter (cmk128(a)hotmail.com) ... 17 Jul 2006 13:05

cygwin/nasm woes
I've been trying to replace some C functions with critical inner loops with asm equivalents. For my sins all this development is done in cygwin. (I.e. I do this on a work machine with a PoSOS, rather than on the machines at home which run my OS of choice.) I used to link two object files created by gcc into a ... 16 Jul 2006 15:09

.EXE -> .ASM -> .EXE
Betov wrote: This is not, at all, the problem, Ben. If you had been a bit more serious in your own work, you would know that the main problem with Disassembling PEs, is about identifying what is Code vs what is Data. This is a terrific and never ended problem, and, in case of failure, looking at the "o... 15 Jul 2006 15:29