OFISA(4)

🌸 NAME 🌸

okay so OFISA(4) from the Kernel Interfaces Manual — section 4, bestie — is literally ofisa: the introduction to machine-independent Open Firmware ISA bus support and drivers. Machine-independent, Open Firmware, ISA bus, support and drivers — the whole package. Periodt. 💅

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✨ SYNOPSIS ✨

here's the setup, no cap:

ofisa* at mainbus0
XX*    at ofisa?

that's the whole vibe check. 🦋

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💖 DESCRIPTION 💖

NetBSD includes a machine-independent ISA bus subsystem and several machine-independent ISA device drivers. The ofisa bus uses Open Firmware to determine how to attach devices. it's giving "Open Firmware handles the attachment lore" and honestly? iconic. 😭

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🎀 HARDWARE 🎀

NetBSD includes machine-independent Open Firmware ISA drivers, sorted by device type and driver name. here's the lineup, bestie:

💾 Disk and tape controllers 💾

• wdc — Standard Western Digital type hard drive controllers: MFM, RLL, ESDI, and IDE/ATAPI. ate.

🔌 Serial and parallel interfaces 🔌

• com — NS8250-, NS16450-, and NS16550-based serial ports.
• lpt — Standard ISA parallel port interface.

🌐 Network interfaces 🌐

• cs — Cirrus Logic Crystal CS8900 Ethernet interfaces.

🎵 Sound cards and MIDI interfaces 🎵

• ess — ESS Technology AudioDrive 1788-, 1888-, 1887-, and 888-based sound cards.

🕹️ Miscellaneous devices 🕹️

• joy — Game (joystick) adapters.

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🦋 SEE ALSO 🦋

go read these next, bestie — the whole friend group: com(4), cs(4), ess(4), intro(4), isa(4), joy(4), lpt(4), and wdc(4). iykyk. 🫶

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🌈 HISTORY 🌈

The Open Firmware ISA subsystem appeared in NetBSD 1.4. iconic debut behavior. 👑

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This little legend came from Debian, dated July 25, 2000, and the page is OFISA(4). no cap, that's the footer lore. 💖