Ram Configuration - HP 330 Service Handbook

RAM Configuration
Each RAM assembly must be configured for the total RAM it contains:
• 4 Mbyte RAM controller board without add-ons must be set to 4
Mbyte block boundaries.
• 4 Mbyte RAM controller board with 4 Mbyte add-on must be set
to 8 Mbyte block boundaries.
• 4 Mbyte RAM controller board with 12 Mbyte add-on must be set
to 16 Mbyte block boundaries.
Maximum RAM is:
• Model 330 is 8 Mbytes, or one 4 Mbyte RAM controller board with
the processor.
• Model 350 is 32 Mbytes, or two 16 Mbyte 2-board assemblies.
The following addresses can be set on the 4 Mbyte RAM Controller
Board in the Model 350 computer.
Note
Model 330 computer support up to 8 Mbytes of
RAM. Only the top two switch settings (address
FFF and FFB) can be used on the Model 330.
Table 3-1. 4 Mbyte RAM Controller Board Configurations
Decimal 3 Hex Switch
Address MSDs Settings
4294967295
FFF 1111111111
4290772991 FFB 1111111110
4286578687
FF7 1111111101
4282384383
FF3 11111111 00
4278190079
FEF 1111111011
4273995775
FEB
1111111010
4269801471 FE7 1111111001
4265607167 FE3 1111111000
Configuration 25