Michael Petch

Michael Petch has asked 12 questions and find answers to 340 problems.

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About

Software engineer and software architect. I can be reached at [email protected].

Michael Petch questions

Why would one avoid using POPF to restore Interrupt Flag state?
What do the constraints "Rah" and "Ral" mean in extended inline assembly?
Solution needed for building a static IDT and GDT at assemble/compile/link time
Understanding Inline assembly in a pre-processor macro vs Inline assembly in a function
GCC code that seems to break inline assembly rules but an expert believes otherwise
Problem switching to v8086 mode from 32-bit protected mode by setting EFLAGS.VM to 1
Near call/jump tables don't always work in a bootloader
Should using MOV instruction to set SS to 0x0000 cause fault #GP(0) in 64-bit mode?
Legacy BIOS bootloader to bootstrap real-mode code in second stage

Michael Petch answers

Broken CPUID brand string?
Why would one avoid using POPF to restore Interrupt Flag state?
What does `000000q` mean?
IBM 5150 - int 21h corrupts segment registers
Cannot load my OS kernel
Use serial-console as display, but computer keyboard for standard-input
FileNotFoundError: [Errno 2] [duplicate]
x86-64 Kernel crashing on setting up the IDT
MASM: dereference struct pointer twice?
Debian 7, fstab, mount.cifs Invalid argument