Model 743 Memory Controller Circuit; Model 744 Memory Controller Circuit - HP 743 Series Technical Reference Manual For Oems

Table 1-10 Model 744 Graphics Performance
HP Visualize-EG Graphics
X11 Lines
Xmark93
PLBsurf93
PLB wire93
2D/3D vectors/sec

Model 743 Memory Controller Circuit

The CPU's memory controller circuit manages memory. Up to 256 MB of RAM may be
installed. An Error Checking and Correcting (ECC) function checks memory word read/write
operations. The ECC function detects single-bit and double-bit errors. Single-bit errors are
corrected. Double-bit errors are detected but not corrected. The memory controller circuit
uses a 64-bit memory bus. The following two RAM card locations are used:
• RAM stack 1, behind the PS/2 connectors on the system board. Up to three RAM cards are
supported.
Physical RAM slot positions are:
• RAM stack 2, behind the audio connectors on the system board. One RAM card is support-
ed and is in physical RAM slot 3.

Model 744 Memory Controller Circuit

The CPU's memory controller circuit manages memory. Up to 1 GB of RAM may be
installed. An Error Checking and Correcting (ECC) function checks memory word read/write
operations. The ECC function detects single-bit and double-bit errors. Single-bit errors are
corrected. Double-bit errors are detected but not corrected. The memory controller circuit
uses a 132-bit memory bus. One RAM card location is used, behind the PS/2 connectors on
the system board. Up to four RAM cards are supported.
Physical RAM slot positions are:
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
On-board
Bottom RAM card, slot 0
Middle RAM card, slot 1
Top RAM card, slot 2
Bottom RAM card, slot 0
Second RAM card, slot 1
Third RAM card, slot 2
Fourth RAM card, slot 3
Model 743 and Model 744 VME Board Computers
132 MHz 165 MHz
5.74M
33.11
49.7
116.1K 135.4K
3.1M
General Information
TBD
36.47
TBD
TBD
1-17