Unisys NX5820 manual MSA104 Style Memory

MSA104 Style Memory

MSA104 Style Memory

The minimum memory capacity per domain utilizing the MSA style memory board is 192 megabytes. Memory capacity may be expanded to 1152 megabytes per domain in increments of 192 megabytes by adding up to two additional MSA104-192 boards and an additional MOD192−DM2 per memory board. MSA memory modules are 6U high cards.

Figure 3-1 depicts the board layout showing the location of the major components of the MSA memory board. Since memory increments are in bank and segment order, the basic 192 megabyte board will have two DIMMs (00 AND 10) installed. A DIMM is comprised of sixteen 16M X 4 BIT DRAMS and provides for 96 MB of memory. Memory capacity for the board is expanded to 384 MB by adding two additional DIMMS, 01 AND 11.

192 MBytes

(Quad)	(Quad)	(Quad)	(Quad)
DIMM 11	DIMM 10	DIMM 01	DIMM 00

384 MBytes

MSUX ASIC

Clock

Circuitry

TAP

Linker

Connector

MSA Memory Increments			Bank 0		Bank 1
	Storage
Quads			Seg 0	Seg 1	Seg 0	Seg 1
	Mwords	MBytes
2	32	192	16Mx64		16Mx64
			Full Quad		Full Quad
	64	384	16Mx64	16Mx64	16Mx64	16Mx64
4			Full Quad	Full Quad	Full Quad	Full Quad

DIMM No.

00

01

10

11

0091

Figure 3–1. MSA Board Layout

3–4 7017 6300–005