EBUS(4) | Device Drivers Manual | EBUS(4)

# NAME

`EBus` — introduction to SPARC EBus bus support and drivers

# SYNOPSIS

`ebus* at pci?`

# DESCRIPTION

The `EBus` bus is designed to provide the ability to put ISA and traditional Intel-style peripherals in a SPARC based system with a minimal amount of glue logic.

In older machines, it is typically implemented in the PCIO IC from SME, which also implements a hme(4) compatible PCI network device (‘`network`’) and four DMA channels, similar to the DMA seen in the esp(4) SCSI DMA.

In newer machines, it is typically implemented using a ALi Super I/O or Southbridge chip, which may also provide com(4) serial ports and a mcclock(4) real-time clock.

# SEE ALSO

intro(4), com(4), esp(4), hme(4), mcclock(4)

Peripheral Component Interconnect Input Output Controller, Part No.: 802-7837-01, https://web.archive.org/web/20040728231845/http://www.sun.com/oem/products/manuals/802-7837.pdf, Sun Microelectronics, March 1997.

June 16, 2026 | NetBSD 11.99