I want to create printl function that allow me to print string in the ax register. I am in 16-bit real mode and I can not find any way to print a message. I using int 0x10 to print a single letter....

I am learning amd64 assembler, and trying to implement a simple Unix filter. For an unknown reason, even simplified to the bare minimum version (code below), it crashes at random. I tried to debug...

I'm using DOS to boot up and start my application test.exe. This program starts the BSP (Bootstrap Processor) in real mode and accesses the APIC table at FEE0:0000 to enable the SVI (Spurious vecto...

I learned to switch to protected mode with a simple DOS based bootloader. This loader loads kernel.bin into a buffer and copies the buffer to 100000h (kernel is 8KiB). Control is then transferred t...

I linked some assembly with some c to test the cost of a function call, with the following assembly and c source (using fasm and gcc respectively) assembly: format ELF public no_call as "_no_cal...

Is there any way to create named variables in the stack rather refer to them by offset: sub esp, 0x10 ; 4 variables of 4 bytes mov DWORD [ebp-4], 0xf ; 1st var mov DWORD [ebp-8], 0xff ; 2nd var ;...

I've been messing around with x86-16 assembly and running it with VirtualBox. For some reason when I read from memory and try to print it as a character, I get completely different results from wha...

I am using XShm extension to draw and manipulate images in Linux. In order to not have screen flickering, I am passing send_event = TRUE to XShmPutImage and then waiting for the event with XIfEven...

I'm using a flat assembler on windows and have already simulated a call instruction with jmp but was wondering if there's a better way to do it with less code?(not using a call) here's the code. ...

I have tried compiling the following code in FASM: mov DWORD PTR [ebp - 4], 1234567 It gave me an "Invalid Expression" error. However the following code worked: mov DWORD [ebp - 4], 1234567 ...

I have done ARM assembly programming and I would like to learn the Intel Assembler. I keep hearing all these different F/M/N/ASMs mentioned- but I am unsure how they related to what I wish to achie...

Does anyone know any good NASM or FASM tutorials? I am trying to learn assembler but I can't seem to find any good resources on it.

I'm exceptionally new to assembly. I only picked it up yesterday and I've looked through many examples and still can't figure out for myself how to write to the console. I always get an error when ...

I wrote simple "hello, world" in fasm, and its works, but how i can generate debug info for gdb and edb (Evan's Debugger)? Fasm compiler could only produce debugging symbols in its specific format ...