Service manual

5.4 Functional Description

Figure 5–5 shows the three main functional units of the

<REFERENCE>(XRV) processor: the vector control unit, the

arithmetic unit, and the load/store unit, which includes the

XMI interface and cache control.

Figure 5–5: <REFERENCE>(XRV) Block Diagram

msb-0527-90

XMI Bus

LOAD/STORE UNIT

VECTOR CONTROL UNIT

VIB

Cable

Cache Data Bus

(CD Bus)

To Scalar Processor

VECTL Chip

Load/Store Chip

ARITHMETIC UNIT

Vector

File Chips

(Verse)

Vector

FPU Chips

(Favor)

Cache and XMI Interface

5–8 VAX 6000 Models 300 and 400 Service Manual