DIGIS-286C Motherboard Settings and Configuration

AMERICAN DIGICOM CORPORATION

DIGIS-286C

Processor
80286 (exact location unknown)
Processor Speed
12MHz
Chip Set
Suntac
Max. Onboard DRAM
4MB
Cache
None
BIOS
Award/Phoenix
Dimensions
330mm x 218mm
I/O Options
None
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
Speaker
J19
Turbo LED
JP4
Power LED & keylock
J20
Turbo switch
JP5
External battery
J21
Reset switch
JP6

USER CONFIGURABLE SETTINGS
Function
Jumper/Switch
Position
»
CPU clock speed select high
DSP1/1
On

CPU clock speed select low
DSP1/1
Off
»
Factory configured - do not alter
DSP1/2
On
»
I/O wait state select 4 wait states
DSP1/3
On

I/O wait state select 6 wait states
DSP1/3
Off
»
EMS port address select 0EBH
DSP1/4
On

EMS port address select 098H
DSP1/4
Off
»
RAM size select 256KB
J18
pins 1 & 2 closed

RAM size select 512KB
J18
pins 2 & 3 closed
»
CPU clock speed select high
JP1
Open

CPU clock speed select low
JP1
pins 2 & 3 closed
»
I/O wait control select keyboard
JP3
pins 1 & 2 closed

I/O wait control select DSP1/3
JP3
pins 2 & 3 closed
»
Turbo enabled
JP4
Closed

Turbo disabled
JP4
Open
»
BIOS type select Phoenix
JP7
pins 1 & 2 closed

BIOS type select Award
JP7
pins 2 & 3 closed
»
DRAM mode select expanded
JP8
Open

DRAM mode select extended
JP8
Closed
»
DRAM wait state select 1 wait state
JP19
Open

DRAM wait state select 0 wait states
JP19
Closed
Note: The location of DSP1 is unknown.

DRAM CONFIGURATION
Mode
Size
Base
Extended
Expanded
Bank 0
Bank 1
0
512KB
512KB
0KB
0KB
(18) 41256
NONE
1
640KB
640KB
0KB
0KB
(18) 41256
(18) 4164
2
1MB
640KB
384KB
0KB
(18) 41256
(18) 41256
3
1MB
640KB
0KB
384KB
(18) 41256
(18) 41256
4
2MB
640KB
1408KB
0KB
(18) 411000
NONE
5
2MB
640KB
0KB
1408KB
(18) 411000
NONE
6
4MB
640KB
3456KB
0KB
(18) 411000
(18) 411000
7
4MB
640KB
0KB
3456KB
(18) 411000
(18) 411000

DRAM SWITCH CONFIGURATION
Mode
DSP1/6
DSP1/7
DSP1/8
0
On
On
On
1
On
On
Off
2
On
Off
On
3
On
Off
Off
4
Off
On
On
5
Off
On
Off
6
Off
Off
On
7
Off
Off
Off
Note: The location of DSP1 is unknown.

BIOS CONFIGURATION
Size
DSP1/5
JP9
27128
On
pins 1 & 2 closed
27256
Off
pins 2 & 3 closed

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DIGIS-286C Motherboard Settings and Configuration

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Processor	80286 (exact location unknown)
Processor Speed	12MHz
Chip Set	Suntac
Max. Onboard DRAM	4MB
Cache	None
BIOS	Award/Phoenix
Dimensions	330mm x 218mm
I/O Options	None
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Speaker	J19	Turbo LED	JP4
Power LED & keylock	J20	Turbo switch	JP5
External battery	J21	Reset switch	JP6

USER CONFIGURABLE SETTINGS
Function		Jumper/Switch	Position
»	CPU clock speed select high	DSP1/1	On
	CPU clock speed select low	DSP1/1	Off
»	Factory configured - do not alter	DSP1/2	On
»	I/O wait state select 4 wait states	DSP1/3	On
	I/O wait state select 6 wait states	DSP1/3	Off
»	EMS port address select 0EBH	DSP1/4	On
	EMS port address select 098H	DSP1/4	Off
»	RAM size select 256KB	J18	pins 1 & 2 closed
	RAM size select 512KB	J18	pins 2 & 3 closed
»	CPU clock speed select high	JP1	Open
	CPU clock speed select low	JP1	pins 2 & 3 closed
»	I/O wait control select keyboard	JP3	pins 1 & 2 closed
	I/O wait control select DSP1/3	JP3	pins 2 & 3 closed
»	Turbo enabled	JP4	Closed
	Turbo disabled	JP4	Open
»	BIOS type select Phoenix	JP7	pins 1 & 2 closed
	BIOS type select Award	JP7	pins 2 & 3 closed
»	DRAM mode select expanded	JP8	Open
	DRAM mode select extended	JP8	Closed
»	DRAM wait state select 1 wait state	JP19	Open
	DRAM wait state select 0 wait states	JP19	Closed
Note: The location of DSP1 is unknown.

DRAM CONFIGURATION
Mode	Size	Base	Extended	Expanded	Bank 0	Bank 1
0	512KB	512KB	0KB	0KB	(18) 41256	NONE
1	640KB	640KB	0KB	0KB	(18) 41256	(18) 4164
2	1MB	640KB	384KB	0KB	(18) 41256	(18) 41256
3	1MB	640KB	0KB	384KB	(18) 41256	(18) 41256
4	2MB	640KB	1408KB	0KB	(18) 411000	NONE
5	2MB	640KB	0KB	1408KB	(18) 411000	NONE
6	4MB	640KB	3456KB	0KB	(18) 411000	(18) 411000
7	4MB	640KB	0KB	3456KB	(18) 411000	(18) 411000

DRAM SWITCH CONFIGURATION
Mode	DSP1/6	DSP1/7	DSP1/8
0	On	On	On
1	On	On	Off
2	On	Off	On
3	On	Off	Off
4	Off	On	On
5	Off	On	Off
6	Off	Off	On
7	Off	Off	Off
Note: The location of DSP1 is unknown.

BIOS CONFIGURATION
Size	DSP1/5	JP9
27128	On	pins 1 & 2 closed
27256	Off	pins 2 & 3 closed