PNP(4)

📦 version 15.1, in freebsd 14.5, freebsd 15.1

✨ NAME ✨

okay so bestie, this page is pnp — support for “Plug and Play” (PnP) ISA devices 💅 and yes, it’s pnp(4), straight outta the i386 Kernel Interfaces Manual. iconic.

💖 DESCRIPTION 💖

The pnp driver literally enumerates ISA devices in the system that support the “Plug and Play ISA Specification” ✨ It assigns ISA bus resources (interrupt line, DMA channel, I/O ports, and memory region) to each device and activates it. slay.

If it cannot assign necessary resources to a PnP ISA device without causing conflict with other devices in the system, the device will not be activated and will be unavailable to programs. no cap, that’s just how it is 😭

🌸 SEE ALSO 🌸

🎀 STANDARDS 🎀

  • Intel and Microsoft, Plug and Play ISA Specification, Version 1.0a, May 5, 1994.
  • Clarifications to the Plug and Play ISA Specification, Version 1.0a, December 10, 1994.

🦋 HISTORY 🦋

The pnp driver first appeared in FreeBSD 2.2.5. It has been substantially updated in subsequent versions. glow-up behavior, honestly 💖

👑 AUTHORS 👑

PnP support was originally written for FreeBSD 2.2.5 by Luigi Rizzo, based on initial work done by Sujal Patel. royalty only 👑✨

💀 CAVEATS 💀

⚠️ bestie, listen: these are the real warnings, not just vibes.
  • It is not possible to disable individual PnP ISA devices. The pnp driver will find all devices conforming the PnP ISA specification and try to activate them all.
  • There is no way to explicitly assign particular resource to the PnP ISA device. The resource assignment is fully automatic and there is no provision for manual override.

mwah 💋 this page’s source/version is Debian, dated September 20, 2001 — bye bestie, drink water 🫶💖

📦 where this page comes from