Tests and Diagnostics
3-156 [CONFIDENTIAL] PORTEGE M780 Maintenance Manual (960-809)
3.35 DOS T&D
3.35.1 Configuration of Test Equipment
The configuration of test equipment required for executing FreeDOS T&D is as follows:
Note: Start the machine after connecting the FDD. If the FDD is connected to the
machine after FreeDOS T&D started, it does not recognize the FDD.
3.35.1.1 Test device configuration
Devices to be tested and Test devices (Abbreviated names)
CPU
： Central Processing Unit
RAM
： Random access memory
ROM
： Read only memory
TIM
： Real Timer、Backup memory(128bytes)
CRT
： Display unit
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