There are a lot of different codewords and jargon involved with
HP hardware. This page attempts to help. Further help can sometimes
be found in the Hardware Database where
a lot of codenames are used.
- GSC Graphics Accelerator
- Host bus adapter used in older workstations. The predecessor to Lasi.
- Integrated Runway to Ropes bridge, Memory controller, and IOA.
- The PA-8200 based K class servers.
- Channel I/O. The predecessor to HP-PB.
- Also a graphics thingy (thanks to Martin Petersen for this answer)
- Dino with a 64-bit data path. Doesn't support
dual address cycle.
- GSC to PCI Bridge. Integrated PS/2, Serial port, and fire
- Executable & Linking Format. Linux/PA-RISC executables & libraries
all use this format. HP-UX uses it for 64-bit executables.
- Ropes to PCI Bridge. Used in current B/C/J/L/N-class machines.
Supports 4X PCI and dual address cycle.
- Excalibur PCI-bus Interface Chip. Integrated IOA. Used in V-class.
- The codename for the 712 series of workstations.
- HP proprietary bus. Initially used for I/O, but PA-7100LC &
PA-7300LC processors connect directly to the GSC bus. GSC comes
in several variants:
- The original GSC bus implemented on PCX-L and used in the
Gecko, Mirage and Electra computers. Peak Bandwidth 142MB/s
w/DMA, 106 MB/s with PIO writes.
- Enhancements added for KittyHawk/SkyHawk (U2 chip) that allow
for pending transactions. GSC+ enhancements are orthogonal
to the GSC-1.5X and GSC-2X enhancements. Aka "Extended GSC"
- GSC-1X with an additional variable length write transaction.
- GSC-1.5X with a protocol enhancement to allow data to be
sent at double the GCLK rate (Peak bandwidth = 256 MB/s)
- Lasi sound device
- Human Interface Loop. A HP proprietary interface for connecting
I/O devices like keyboards, mice or tablets.
- High Priority Machine Check. Fatal system error. PDC saves machine
state in the PIM.
- Hewlett Packard-Precision Bus. HP proprietary I/O bus. Aka NIO.
- IO Adapter. Aka "I/O MMU". Generally handles I/O coherency.
- The PA-7200 based K class servers.
- An integrated IO controller (serial, parallel, SCSI, PS/2 keyboard and mouse) found in many workstations.
- Low Priority Machine Check. Generally a recoverable system error.
- The codename for the later series of 715 workstations.
- The PA-8000 based K class servers.
- The EISA bus adapter found in 715/720/725/730/735/750/755 machines.
- The codename for the F, G, H and I class servers.
- See HP-PB
- Processor dependent code. Machine specific assembler code from
flash memory or ROM.
- Processor Internal Memory. Machine state is saved here for
HPMC, LPMC, and TOC's. See PDC_PIM in "PDC Procedures" chapter of
PA I/O ACD.
- PA-7200, -8000, -8200, -8500 processors connect directly to the Runway bus.
- EPIC with a 64-bit data path. Doesn't support
dual address cycle.
- The codename for the earlier series of 715 workstations.
- Systems Graphics Connect.
- The original HP workstations; the 705, 710, 720, 730 and 750.
- Spectrum Object Format. This is the executable & library format used
by HP-UX for 32-bit executables. Spectrum was the codename for PA-RISC.
- Standard Text Interface.
- National Semiconductor PC87560UBD, aka "SuperIO". Provides IDE, USB 1.1,
Floppy Disk Controller, parallel port, 2 serial ports, UIR (infrared),
etc. But since National denies the existence of this chip and HP was the
only client for this buggy PoS, the name "SuckyIO" has stuck.
- A proprietary bus used in the T-class.
- See SuckyIO.
- Transfer of Control. On workstations which have it, basically
a "RESET" button. Servers may have more advanced features.
- Runway to GSC Bus bridge & IOA. Found in some C/D/J/K/R-class systems.
- The codename for the D class servers.
- U2 follow on. Differences not visible to OS software.
- Graphics Accelerator found in older workstations
- Memory controller
- GSC to EISA Bridge found in older systems (including B/C/D/R-class).
Has often one integrated HIL port and one serial port.
- Wright Brothers
- The codename for the E class servers.