Compaq DS20E - AlphaStation - 1 GB RAM Guía para resolver problemas Pagina 20

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1-4 DS20E Reference Guide
Compaq Confidential Need to Know Required
Writer: Robert Young Project: DS20E Reference Guide Comments:
Part Number: ER-K8F6W-UA .A01 File Name: b-ch1 System Overview.doc Last Saved On: 10/4/99 1:23 PM
System Architecture
The system is a departmental system provided as a pedestal or rackmount and
offers Peripheral Component Interconnect (PCI) and Industry Standard
Architecture (ISA) bus options on a single system board. The system utilizes
Alpha symmetric multi-processing technology. Figure 12 shows the
architecture of the system.
C-chip
CPU 1
(optional)
CPU 0
B-cache
B-cache
8 D-chips
P-chip
P-chip
1 or 2
Memory
Banks
Memory
Banks
64 bit PCI
64 bit PCI
Command, Address, and Control lines for each Memory Array
Control lines for D-chips
Memory
Data
Bus
CPU
Data
Bus
CAPbus
PAD
Bus
CMD/
Addr.
CMD/
Addr.
Probe/
Addr.
Probe/
Addr.
PKW
1400-99
1 or 2
Figure 1 2. System Architecture
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