pdc_model_versions(9)

📦 version 7.3.1, in nixpkgs unstable

🌸 pdc_model_versions(9) — kernel API manual, but make it make sense 🌸

okay bestie, welcome to the pdc_model_versions(9) page 💅 this one is short and sweet, so let's get into it — we're gonna figure out what version each processor component is running, no cap.

✨ NAME ✨

pdc_model_versions — identify the version number of each processor. literally that's the whole job 🫶

🌈 SYNOPSIS 🌈

int pdc_model_versions (unsigned long *versions , int id );

he's tiny but he's doing his best, ok 💖

🎀 ARGUMENTS 🎀

  • versions — the return buffer. yes bestie it's an out param, the good stuff gets written here ✨
  • id — the id of the processor to check. like which one are we asking about 👑

🦋 DESCRIPTION 🦋

so the function returns the version number for each processor component. that's the vibe 🔥

okay and now the iconic part — there's a comment in here that was here before the author got to it, and they straight-up say they don't know what it means 😭 no cap, quoting the chaos directly:

This comment was here before, but I do not know what it means :( -RB

and then the actual mapping, which is the genuinely useful bit:

  • 0 = cpu revision
  • 1 = boot-rom-version

so like... id 0 gets you the cpu revision, id 1 gets you the boot-rom-version. iykyk 🧚 that's it, that's the whole function, main character energy in the smallest possible package 💜

💀 SEE ALSO 💀

buckle up bestie, this list is long — but every single one is invited to the group chat 🫶 and yeah, it all lives in the kernel file ./arch/parisc/kernel/firmware.c:

and that's the page, bestie 🎀 go forth and check those processor versions 💅

sign-off szn ✨: this one lives under ./arch/parisc/kernel, and it's dated October 2026 — stamp it, archive it, slay 💖

📦 where this page comes from