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1-4. BIOS POST (Power On SelfTest) check
.Error.d·et!3cth~m
and report
When the system is started, BIOS POST program is executed.
In POST, .operations
.of
the system :RAM ihterruptidn and- various
devices includir:lg peripheral ,devices -are- checked. The operation
checks are classified into" two groups according to 'error report.
1) Error report by
VO
port 80h (MFG port) and beep souna
?}
Error report
by
~essage
displayed on the screen
-For:-the-tests-whicttcuse-thErVe-porr801r(MF~rand-
beep
sounds, the test items and the, output data to the port BOh are shown
in the
foIJo~i~g
table.
For the test item with "NONE" in the colutTIn of Beep sound, the
system does not stop. Fgr -the: other
te~
items,
when
any error
oc-
curs, beep sound is generated and the system is
stopped.
'
..
"
,
--
"
.
(Note)
Figures
jlJ
the
ooliJm~
,9f
b~ep' so~nd;'show,s,
the
-~umber
of
be~p.
For eX<;I.mple, "1-3-4",shows
"l
heep sound,' pause, 3
beep
sounds; pause, and 4 beep sound."
'
Hardware installation
SHARP PERFONAL COMPUTER HARDWARE INSTALLATION
--------------------------------Displa y Configuration--------------------------------
Display Mode:
VGA Mode
Display Adaptor:
Internal VGA
----------------------------------1/0
Configuration-----------------------------------
Internal Serial Port:
Port 1
Optional Serial Port:
Port 2
Internal Parallel Port:
Port 1
ROM Disk I/O Port:
EMS 1/0 Port:
1 C8h-1CBh
218h-21Bh
1. Position Cursor using cursor keypad
Test items
PORT 80li Beep "ound
CPU register test'
01h
None
RTC RAM readlwrite test
02h
1-1-3
BIOS ROM check
s.~m
lest
03h
1-1-4
system timer (82S4) test
04h
1-2-1
DMAC initializing test
OSh
1-2-2
DMA pags-'register test
06h
1-2-3
RAM refresh test
08h
1 '3-1
First 64KB sy-siemBAM
test start
Q9b.
.Noru;L.
First 64KB RAM plural data fiDes error
OAh
1-1-1
First 64KB RAM contror logic error
OBh
t-3-4
First 64KB RAM address line error
oth
1-4-1
First 64KB RAM parity test
ODh
1-4-2
First 64KB RAM data line error (BITO)
10h
2-1-1
Rrst 64KB RAM data line error (BIT1) .
i1h·
2-1-2
Firsl64KBRAM data line error (BIT2)·
12h
2-1-3
First 64KB RAM data line error (BIT3)
13h
2-1-4
First 64KB RAM data line error (BIT4)
14h
2-2-1
Rrst 64KB RAM data line error (BITS)
1Sh
2'2-2
First 64KB RAM data line error (BIT6)
16h
2-2,3
First 64KB RAM data.!ine error (BIT7)
17h
2-2-4
First 64KBRAM aata line error (BIT8)
18h
2-3-1
First 64KB RAM data line error (BIT9)
19h
2-3-2
Rrst 64KB RAM data line error (BITA)
1Ah
2-3-3
Rrst 64KB RAM data line error (BITB)
1Bh
2-3-4
First 64KB RAM data line error (BITC)
1Ch
2-4-1
First 64KB RAM data line error (BITO)
1Dh
2-4-2
First 64KB RAM data line error (BITE)
1Eh
2-4-3
Rrst.64KB RAM data line error (BITF)
1Fh
2-4-4
Slave DM.!IC register test
20h
3-1-1
Master DMAC register test
21h
3-1-2
Master interrupt mask register test
22h
3-1-3
Slave interrupt mask register test
23h
3-1-4
Interrupt vector setting
2Sh
None
Keyboard controller test
27h
3-2-4
RTC RAM power check sum test
28h
None
RTC RAM content validation test
29h
None
Display memory (VRAM) test
2Bh
3-3-4
Display initialization test
2Ch
3-4-1
Display line signal test
2Dh
3-4-2
Display ROM searching
2Eh
None
Display test complete
30h
None
Monochrome display allowed to use
31h
None
Color display (40 columns) allowed to use
32h
None
Color display (80 columns) allowed to use'
33h
None
----------------------------------Drive Assignment---------------------------------
Drive A:
External 3.5" FDD
Drive B:
Drive C:
Drive D:
External S,2S" FDD
Internal HOD
None
-----------------------------Memory Configuration--------------------------------
Internal memory Size:
1 MB
Boundary Address:
110000h
... Main Memory:
• Extended Memory:
... Expanded Memory:
... Disabled memory:
2. Press Space Bar
640KB
64KB
320KB
OKB
3. Press Set-Up Key to exit
Fig. 1-7
8-
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