HP Precision Bus: Difference between revisions

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The HP Precision bus is the data transfer bus of the proprietary Hewlett Packard architecture HP 3000 and later many variants of the HP 9000 series of UNIX systems. This bus gives a 32 bits data path with an 8 MHz clock. It supports a maximum transfer rate of 23 MB/s in burst mode. That bus can handle up to three, psi standard, expansion cards in the 920, 922 and 932 series and up to five cards in the 948 and 958 series.

Two form factors/sizes of HP-PB expansion cards were sold: single and double. ^[1]

   * 32-bit data path width
   * 32 MB/s maximum data rate
   * 8 MHz maximum frequency
   * 5 V signalling voltage
   * 96-pin (32×3) female pin+socket card connector

External links

Notes

^ http://www.openpa.net/bus.html

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[1] ttp://www.openpa.net/bus.html

[1]

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 {{see also|HP 3000}}
 [[file:HP Precision Architecture - precision bus highlighted.svg|thumb|350px|Bus scheme with optional interfaces]]
-The '''HP Precision bus''' is the data transfer [[bus (computing)|bus]] of the proprietary [[Hewlett Packard]] architecture [[HP 3000]]. This bus gives a 32 bits data path with an 8 [[MHz]] [[clock signal|clock]]. It supports a maximum transfer rate of 23 [[byte|MB]]/s in [[burst mode (computing)|burst mode]]. That bus can handle up to three, [[psi (computing)|psi]] standard, [[expansion cards]] in the 920, 922 and 932 series and up to five cards in the 948 and 958 series.
+The '''HP Precision bus''' is the data transfer [[bus (computing)|bus]] of the proprietary [[Hewlett Packard]] architecture [[HP 3000]] and later many variants of the HP 9000 series of UNIX systems. This bus gives a 32 bits data path with an 8 [[MHz]] [[clock signal|clock]]. It supports a maximum transfer rate of 23 [[byte|MB]]/s in [[burst mode (computing)|burst mode]]. That bus can handle up to three, [[psi (computing)|psi]] standard, [[expansion cards]] in the 920, 922 and 932 series and up to five cards in the 948 and 958 series.
 Two form factors/sizes of HP-PB expansion cards were sold: single and double. <ref>http://www.openpa.net/bus.html</ref>

v t e Technical and de facto standards for wired computer buses
General	System bus Front-side bus Back-side bus Daisy chain Control bus Address bus Bus contention Bus mastering Network on a chip Plug and play List of bus bandwidths
Standards	SS-50 bus S-100 bus Multibus Unibus VAXBI MBus STD Bus SMBus Q-Bus Europe Card Bus ISA STEbus Zorro II Zorro III CAMAC FASTBUS LPC HP Precision Bus EISA VME VXI VXS VPX NuBus TURBOchannel MCA SBus VLB HP GSC bus InfiniBand Ethernet UPA PCI PCI Extended (PCI-X) PXI PCI Express (PCIe) AGP Compute Express Link (CXL) Direct Media Interface (DMI) RapidIO Intel QuickPath Interconnect NVLink HyperTransport Infinity Fabric Intel Ultra Path Interconnect Coherent Accelerator Processor Interface (CAPI) SpaceWire
Storage	ST-506 ESDI IPI SMD Parallel ATA (PATA) Bus and Tag DSSI HIPPI Serial ATA (SATA) SCSI Parallel SAS ESCON Fibre Channel SSA SATAe PCI Express (via AHCI or NVMe logical device interface)
Peripheral	Apple Desktop Bus Atari SIO DCB Commodore bus HP-IL HIL MIDI RS-232 RS-422 RS-423 RS-485 Lightning DMX512-A IEEE-488 (GPIB) IEEE-1284 (parallel port) IEEE-1394 (FireWire) UNI/O 1-Wire I²C (ACCESS.bus, PMBus, SMBus) I3C SPI D²B Parallel SCSI Profibus USB Camera Link External PCIe Thunderbolt
Audio	ADAT Lightpipe AES3 Intel HD Audio I²S MADI McASP S/PDIF TOSLINK
Portable	PC Card ExpressCard
Embedded	Multidrop bus CoreConnect AMBA (AXI) Wishbone SLIMbus
Interfaces are listed by their speed in the (roughly) ascending order, so the interface at the end of each section should be the fastest. Category