Supported Configurations; Model 743 Memory; Model 744 Memory - HP 743 Series Technical Reference Manual For Oems

Supported Configurations

This section discusses the following supported configurations: memory, system graphics,
external devices, cables, and keyboard and mouse.
Hewlett-Packard only supports products having Hewlett-Packard approved parts, accesso-
ries, peripherals, operating systems, and application programs.

Model 743 Memory

Standard memory is Error Checking and Correcting (ECC) RAM cards. Up to four RAM
cards may be installed. RAM upgrades include:
• HP A4265A 32 MB RAM Card
• HP A4266A 64 MB RAM Card
Model 743 VME Board Computers use custom 60-ns TSOP-based RAM cards. Use of TSOP
packaging allows adequate cooling in single-slot installations.
Two stack locations for RAM cards are used. The primary RAM stack is on the right side, the
secondary one is on the left side. Only one RAM card can be used in the secondary, or left
stack, if a GSC+ card is added in the secondary GSC+ slot. Three RAM cards can be used in
the primary stack. If more than one RAM card is used in either stack, the optional HP 4262A
GSC Expansion Kit or A4504A PMC Bridge Adapter (HP-UX only) must be installed; then
the board computer will occupy two VME slots in a VME chassis.
RAM cards may be placed in any order. A higher density card can be added on top of a low
density card and vice versa.

Model 744 Memory

Standard memory is Error Checking and Correcting (ECC) RAM cards. Up to four RAM
cards may be installed. RAM upgrades include:
• HP A4501A 64 MB RAM Card
• HP A4449A 128 MB RAM Card
• HP A6005A 256 MB RAM Card
Model 744 VME Board Computers use custom TSOP-based RAM cards. Use of TSOP pack-
aging allows adequate cooling in single-slot installations.
There is only one stack location for RAM cards on the Model 744. Memory cards are stacked
in the same orientation; that is, there is no need to rotate cards 180 degrees relative to the pre-
viously inserted card as in the Model 743. If more than one RAM card is used, the optional
HP 4219A GSC expansion kit must be installed; then the board computer will occupy two
VME slots in a VME chassis.
When mixing the 128 MB and 256 MB RAM card with cards of a different capacity, the 128
MB and 256 MB card(s) must always be in the lower memory slots.
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Model 743 and Model 744 VME Board Computers
General Information
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