DIS51(1)

💖 DIS51 💖

okay bestie, so dis51 is a disassembler for 8051 code in Intel Hex format and she is so good at her job. this is the DIS51(1) page, general commands manual energy, and yes we're reading it together because i love you and i want you to understand it 💅

✨ NAME ✨

dis51 — disassembler for 8051 code in Intel Hex format

like. that's the whole vibe. she takes 8051 machine code and she tells you what it says. iconic behavior fr fr 🎀

✨ SYNOPSIS ✨

dis51 [-l] [entry-point]… < program.ihx

so you pipe your Intel Hex file in through standard input, you optionally throw a -l at her, you optionally hand her one or more entry-points, and she goes off 👑 note the < bestie, she reads from stdin, not from a filename argument. that's the whole thing.

✨ DESCRIPTION ✨

okay so here's what's actually happening 🌸

dis51 disassembles an Intel 8051 program that you give it on the standard input stream, in Intel Hex format. that's the deal. that's the arrangement. you feed her hex, she hands you back something a human can read.

not me stressing that it's stdin specifically — no filename, no argument, it's < program.ihx or it's nothing. iykyk 🫶

now, the entry-points. if you don't give her any entry-points, disassembly starts from entry-point 0. no drama, no arguments, she just begins at zero and gets going.

and here's the cute part: the union of all reachable code is disassembled, in order. so she's not just blindly walking the file — she's chasing down everything reachable from your entry-point(s) and giving it to you all together, in order. main character energy honestly 🌈

about that -l flag:

• -l — prefixes each line of the disassembly with the hex address and the bytes it corresponds to. so instead of just the pretty instructions, you also get "here's where this lives and here's the raw bytes that made it." lowkey the most useful flag when you're actually trying to match things up 🔥

and that's the entire page bestie, she's short and she's perfect 💜

this gem was brought to you by Debian, dated November 16, 2024 — mwah, thank you for coming to my ted talk, go disassemble something 🦋✨