Compaq AlphaServer GS60 Operation Manual page 335

Flash ROM
Flash-erasable programmable read-only memory, which can be bulk erased and
reprogrammed. The processor module uses flash ROMs to hold the console and
diagnostic firmware. In addition, one flash ROM holds initialization code that
bootstraps the main console/diagnostic firmware. See also SROM code.
Gbus
The path between the processor and the console/diagnostic firmware and to two
UART chips. The Gbus has two lines, one to the serial console terminal and one
to the power supply.
Hardware restart parameter block (HWRPB)
A page-aligned data structure shared between the console and system software; a
critical resource during bootstraps, recovery from power failures, and other restart
situations.
Hose
An interconnect between the KFTHA or KFTIA module on the TLSB bus and the
interface module on another bus, such as a PCI, XMI, or Futurebus+ for
AlphaServer 8400 systems running OpenVMS or DIGITAL UNIX systems, or a
PCI bus for AlphaServer 8200 systems or 8400 systems running Windows NT.
The KFTHA module contains four hoses. The KFTIA module contains one hose.
KFE70
An adapter providing support for a serial console terminal and to the console load
devices.
KFE72
An adapter providing an I/O interface to the console load devices as well as
support for a graphics monitor. It also provides the serial and parallel ports
expected by the Windows NT operating system.
KFESA
EISA device; SHAC-based DSSI controller.
KFMSB
XMI adapter for RF disks and TF tapes used to enable connection to nodes on a
DSSI bus. Each KFMSB adapter supports two DSSI buses.
KFTHA module
The TLSB module that provides the interface from the TLSB bus to I/O buses.
The KFTHA module has four ports to support up to four I/O channels. Each
channel is known as a "hose." A system can support up to three KFTHAs with the
first one in node 8 of the TLSB. Node 8 is dedicated as both the highest and
lowest arbitration level; the KFTHA usually arbitrates at the highest priority.
Glossary-5