MARK V BABY SCREAMER Motherboard Settings and Configuration

AMERICAN MEGATRENDS, INC.

MARK V BABY SCREAMER

Processor
80386DX
Processor Speed
25/33/40MHz
Chip Set
AMI
Max. Onboard DRAM
32MB
Cache
64/256KB
BIOS
AMI
Dimensions
330mm x 218mm
I/O Options
Floppy drive interface, IDE interface, parallel port, serial ports (2)
NPU Options
80387/3167

CONNECTIONS
Purpose
Location
Purpose
Location
IDE interface LED
J1
Turbo switch
J38
External battery
J2
Serial port 2
P1
Power LED & keylock
J10
Serial port 1
P4
Speaker
J11
Parallel port
P5
Reset switch
J12
Floppy interface
P6
Diagnostic LED
J13
IDE interface
P7
Turbo LED
J15

USER CONFIGURABLE SETTINGS
Function
Jumper/Switch
Position
»
ROM access select 0 wait state
J14
Closed

ROM access select 1 wait state
J14
Open
»
BIOS type select 27256
J18
pins 1 & 2 closed

BIOS type select 27512
J18
pins 2 & 3 closed
»
Serial port COM2 select IRQ3
J21
pins 2 & 3 closed

Serial port COM2 select IRQ4
J21
pins 1 & 2 closed
»
Serial port COM1 select IRQ4
J22
pins 2 & 3 closed

Serial port COM1 select IRQ3
J22
pins 1 & 2 closed
»
Parallel port IRQ select IRQ7
J23
pins 2 & 3 closed

Parallel port IRQ select IRQ5
J23
pins 1 & 2 closed
»
Segment C800 shadow enabled
J36
pins 2 & 3 closed

Segment C800 shadow disabled
J36
pins 1 & 2 closed
»
Factory configured - do not alter
SW1/1
Off
»
Monitor type select monochrome
SW1/2
Off

Monitor type select color
SW1/2
On
»
Video shadow enabled
SW1/3
On

Video shadow disabled
SW1/3
Off
»
ROM BIOS shadow enabled
SW1/4
On

ROM BIOS shadow disabled
SW1/4
Off

DRAM CONFIGURATION
Size
Bank 1
Bank 2
1MB
(4) 256K x 9
NONE
2MB
(4) 256K x 9
(4) 256K x 9
4MB
(4) 1M x 9
NONE
8MB
(4) 1M x 9
(4) 1M x 9
16MB
(4) 4M x 9
NONE
32MB
(4) 4M x 9
(4) 4M x 9

DRAM JUMPER/SWITCH CONFIGURATION
Size
J4
J5
SW1/5
SW1/6
SW1/7
SW1/8
1MB
2 & 3
2 & 3
On
On
On
On
2MB
2 & 3
2 & 3
On
Off
On
On
4MB
2 & 3
1 & 2
On
On
On
Off
8MB
2 & 3
1 & 2
On
Off
On
Off
16MB
1 & 2
1 & 2
On
On
Off
Off
32MB
1 & 2
1 & 2
On
Off
Off
Off
Note : Pins designated should be in the closed position.

CACHE CONFIGURATION
Size
Bank 0
TAG (U32)
TAG (U38)
64KB
(10) 16K x 4
(1) 16K x 4
NONE
256KB
(10) 64K x 4
NONE
(1) 64K x 4

CACHE JUMPER CONFIGURATION
Size
J19
J20
J32
64KB
pins 2 & 3 closed
pins 2 & 3 closed
Open
256KB
pins 1 & 2 closed
pins 1 & 2 closed
Closed

CPU SPEED CONFIGURATION
Speed
J35
J37
25MHz
pins 2 & 3 closed
Open
33MHz
pins 2 & 3 closed
Open
40MHz
pins 1 & 2 closed
Closed

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MARK V BABY SCREAMER Motherboard Settings and Configuration

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Processor	80386DX
Processor Speed	25/33/40MHz
Chip Set	AMI
Max. Onboard DRAM	32MB
Cache	64/256KB
BIOS	AMI
Dimensions	330mm x 218mm
I/O Options	Floppy drive interface, IDE interface, parallel port, serial ports (2)
NPU Options	80387/3167

CONNECTIONS
Purpose	Location	Purpose	Location
IDE interface LED	J1	Turbo switch	J38
External battery	J2	Serial port 2	P1
Power LED & keylock	J10	Serial port 1	P4
Speaker	J11	Parallel port	P5
Reset switch	J12	Floppy interface	P6
Diagnostic LED	J13	IDE interface	P7
Turbo LED	J15

USER CONFIGURABLE SETTINGS
Function		Jumper/Switch	Position
»	ROM access select 0 wait state	J14	Closed
	ROM access select 1 wait state	J14	Open
»	BIOS type select 27256	J18	pins 1 & 2 closed
	BIOS type select 27512	J18	pins 2 & 3 closed
»	Serial port COM2 select IRQ3	J21	pins 2 & 3 closed
	Serial port COM2 select IRQ4	J21	pins 1 & 2 closed
»	Serial port COM1 select IRQ4	J22	pins 2 & 3 closed
	Serial port COM1 select IRQ3	J22	pins 1 & 2 closed
»	Parallel port IRQ select IRQ7	J23	pins 2 & 3 closed
	Parallel port IRQ select IRQ5	J23	pins 1 & 2 closed
»	Segment C800 shadow enabled	J36	pins 2 & 3 closed
	Segment C800 shadow disabled	J36	pins 1 & 2 closed
»	Factory configured - do not alter	SW1/1	Off
»	Monitor type select monochrome	SW1/2	Off
	Monitor type select color	SW1/2	On
»	Video shadow enabled	SW1/3	On
	Video shadow disabled	SW1/3	Off
»	ROM BIOS shadow enabled	SW1/4	On
	ROM BIOS shadow disabled	SW1/4	Off

DRAM CONFIGURATION
Size	Bank 1	Bank 2
1MB	(4) 256K x 9	NONE
2MB	(4) 256K x 9	(4) 256K x 9
4MB	(4) 1M x 9	NONE
8MB	(4) 1M x 9	(4) 1M x 9
16MB	(4) 4M x 9	NONE
32MB	(4) 4M x 9	(4) 4M x 9

DRAM JUMPER/SWITCH CONFIGURATION
Size	J4	J5	SW1/5	SW1/6	SW1/7	SW1/8
1MB	2 & 3	2 & 3	On	On	On	On
2MB	2 & 3	2 & 3	On	Off	On	On
4MB	2 & 3	1 & 2	On	On	On	Off
8MB	2 & 3	1 & 2	On	Off	On	Off
16MB	1 & 2	1 & 2	On	On	Off	Off
32MB	1 & 2	1 & 2	On	Off	Off	Off
Note : Pins designated should be in the closed position.

CACHE CONFIGURATION
Size	Bank 0	TAG (U32)	TAG (U38)
64KB	(10) 16K x 4	(1) 16K x 4	NONE
256KB	(10) 64K x 4	NONE	(1) 64K x 4

CACHE JUMPER CONFIGURATION
Size	J19	J20	J32
64KB	pins 2 & 3 closed	pins 2 & 3 closed	Open
256KB	pins 1 & 2 closed	pins 1 & 2 closed	Closed

CPU SPEED CONFIGURATION
Speed	J35	J37
25MHz	pins 2 & 3 closed	Open
33MHz	pins 2 & 3 closed	Open
40MHz	pins 1 & 2 closed	Closed