SBus
Sign in to savethumb|right|Two SBus cards thumb|right |upright=1.8 |SBus male connector SBus is a computer bus system that was used in most SPARC-based computers (including all SPARCstations) from Sun Microsystems and others during the 1990s. It was introduced by Sun in 1989 to be a high-speed bus counterpart to their high-speed SPARC processors, replacing the earlier (and by this time, outdated) VMEbus used in their Motorola 68020- and 68030-based systems and early SPARC boxes. When Sun moved to open the SPARC definition in the early 1990s, SBus was likewise standardized and became IEEE-1496. In 1997 Sun st
Key facts
- Computer Hardware Bus.name
- SBus
- Computer Hardware Bus.image
- Sbus_slots.jpg
- Computer Hardware Bus.caption
- Four SBus connectors (top of photograph)
- Computer Hardware Bus.invent name
- Sun Microsystems
- Computer Hardware Bus.super name
- PCI
- Computer Hardware Bus.super date
- 1997
- Computer Hardware Bus.width
- 32
- Computer Hardware Bus.numdev
- 8 masters, unlimited slaves
- Computer Hardware Bus.speed
- 16.67 MHz - 25 MHz
- Computer Hardware Bus.style
- p
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thumb|right|Two SBus cards thumb|right |upright=1.8 |SBus male connector SBus is a computer bus system that was used in most SPARC-based computers (including all SPARCstations) from Sun Microsystems and others during the 1990s. It was introduced by Sun in 1989 to be a high-speed bus counterpart to their high-speed SPARC processors, replacing the earlier (and by this time, outdated) VMEbus used in their Motorola 68020- and 68030-based systems and early SPARC boxes. When Sun moved to open the SPARC definition in the early 1990s, SBus was likewise standardized and became IEEE-1496. In 1997 Sun started to migrate away from SBus to the Peripheral Component Interconnect (PCI) bus, and today SBus is no longer used.
The industry's first third-party SBus cards were announced in 1989 by Antares Microsystems; these were a 10BASE2 Ethernet controller, a SCSI-SNS host adapter, a parallel port, and an 8-channel serial controller.