Toshiba Satellite C655 - Chapter 5 The Keyboard; Keyboard Features and FN Key Combinations

3.5 System Test 3 Diagnostic Programs
5. CPU Protected Mode Test
This test item is to check whether CPU protected mode instruction works
normally.
6. MMX
The test item is to confirm whether the CPU supports MMX instructions.
Subtest 02 Boards
1. DMA Controller
This test item is to check whether the DMA controller works normally.
2. Interval Timer
This test item is to check whether the Interval Timer (18.2Hz, 55ms) works
normally.
3. Clock/Calendar
This test item is to check whether the system clock/calendar works
normally.
4. PCI System
This test item is to check whether the bus number, device number and
function number in PCI bus are valid.
5. Plug and Play
Satellite/Satellite Pro/C650/C655 Maintenance Manual 33