T3400, T3400CT
3.4 System Test
To execute the System Test, select 1 from the DIAGNOSTIC TESTS menu, press Enter and
follow the directions displayed on the screen. Move the highlight bar to a subtest and press
Enter.
Subtest 01 ROM checksum
ROM checksum tests the system board from address F0000h to FFFFFh
(64KB).
Subtest 02 H/W status
This test reads and displays hardware status as shown below:
76543210
H/W status = 10001000
Bit7 — =
Bit6 — CPU clock = 33MHz
Bit5 — Notch signal = 2HD
Bit4 — FDD type = 2MB
Bit3 — =
Bit2 — Drive A/B = Ext. = B
Bit1 — External FDD = OFF
Bit0 — Internal FDD = 2HD
Table 3-2 lists hardware bit status for each bit tested. Press Enter to return to
the Subtest Menu.
Table 3-2 Hardware Bit Status
Bit H/W status 1 0
7 Reserved — —
6 CPU clock speed 16.5 MHz 33 MHz
5 Media type 2DD 2HD
4 FDD type 1.6 MB 2 MB
3 Reserved — —
2 Drive A/B Ext. = A Ext. = B
1 External FDD ON OFF
0 Internal FDD 2DD 2HD
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