Tig Bus - Compaq AlphaServer DS20 Service Manual

1.13 TIG Bus

The Timing, Interrupt, and General bus (TIG) performs a number of functions;
it carries all system interrupts, timing signals and provides the path to the
diagnostic and console flash ROMs.
Figure 1-18 TIG Bus Block Diagram
CPU
Data
Bus
D Chips
CPU s
PAD
Bus
CAP
P Chip C Chip
Bus
TIG Bus
Config
Flash
Registers
ROM
switchpack
1-34 AlphaServer DS20 Service Manual
Interrupt
data lines
IRQs
and
3.