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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:
H/W status = 10001000
Bit7 —
Bit6 — CPU clock
Bit5 — Notch signal
Bit4 — FDD type
Bit3 —
Bit2 — Drive A/B
Bit1 — External FDD
Bit0 — Internal FDD
Table 3-2 lists hardware bit status for each bit tested. Press Enter to return to
the Subtest Menu.
Bit
H/W status
7
Reserved
6
CPU clock speed
5
Media type
4
FDD type
3
Reserved
2
Drive A/B
1
External FDD
0
Internal FDD
3-8
76543210
=
= 50MHz
= 2HD
= 2MB
=
= Ext. = B
= OFF
= 2HD
Table 3-2 Hardware Bit Status
1
—
50 MHz (T4700CS/CT)
75 MHz (T4800CT)
2DD
1.6 MB
—
Ext. = A
ON
2DD
0
—
50 MHz (T4700CS/CT)
75 MHz (T4800CT)
2HD
2 MB
—
Ext. = B
OFF
2HD
T4700CS, T4700CT, T4800CT
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