CUPID Desktop EISA 486/25 & 486/33 (VER. 1)

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AST RESEARCH, INC.

Model 202351-00X

Processor

80486DX (on external CPU/Memory module)

Processor Speed

25/33MHz

Chip Set

AST

Max. Onboard DRAM

None (16MB on external CPU/Memory module)

SRAM Cache

None

BIOS

AST

Dimensions

330mm x 218mm

I/O Options

32-bit external CPU/Memory module slot, 32-bit external Memory module slot (2), bus mouse port, floppy drive interface, IDE interface, parallel port, serial port (2)

NPU Options

4167 (on external CPU/Memory module)

CONNECTIONS

Purpose

Location

Purpose

Location

Serial port 1 (COM1)

CN1

Bus mouse port

J30

Parallel port

CN2

Front panel switches & LEDs

P11

EISA slave slot

ES

External battery

P14

Speaker

J12

Serial port 2 (COM2)

P18

Floppy drive interface (A: and B:)

J20

32-bit external CPU/Memory module

S1

Third floppy drive interface

J21

32-bit external Memory module slots

S2 & S3

IDE interface

J22

Optional ROM (even)

U32

IDE interface LED

J23

Optional ROM (odd)

U33

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»
Factory configured - do not alter

E1

open

»
Factory configured - do not alter

E2

closed

»
Factory configured - do not alter

E3

open

»
Password check enabled

E4

pins 2 & 3 closed

Password check disabled

E4

pins 1 & 2 closed

»
Factory configured - do not alter

E5

open

»
Factory configured - do not alter

E6

closed

»
Factory configured - do not alter

E7

pins 2 & 3 closed

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»
Parity check enabled

E1

closed

Parity check disabled

E1

open

Note:AST CPU/Memory module part number is 202361-002, 202361-005, or 202361-006 for 25MHz

systems or 202361-004 or 202361-007 for 33MHz systems.

DRAM CONFIGURATION

Size

Bank 0

Bank 1

2MB

(2) 1M x 9

NONE

4MB

(2) 1M x 9

(2) 1M x 9

8MB

(2) 4M x 9

NONE

10MB

(2) 1M x 9

(2) 4M x 9

16MB

(2) 4M x 9

(2) 4M x 9

Notes:128KB of DRAM is reserved for System and VGA BIOS shadowing and cannot be disabled.

Up to two of the following memory boards may be installed in addition to the CPU/Memory

module: AST part numbers 202275-002, 202275-004, 202275-006, 202387-001,

or 202387-005.

Processor	80486DX (on external CPU/Memory module)
Processor Speed	25/33MHz
Chip Set	AST
Max. Onboard DRAM	None (16MB on external CPU/Memory module)
SRAM Cache	None
BIOS	AST
Dimensions	330mm x 218mm
I/O Options	32-bit external CPU/Memory module slot, 32-bit external Memory module slot (2), bus mouse port, floppy drive interface, IDE interface, parallel port, serial port (2)
NPU Options	4167 (on external CPU/Memory module)

CONNECTIONS
Purpose	Location	Purpose	Location
Serial port 1 (COM1)	CN1	Bus mouse port	J30
Parallel port	CN2	Front panel switches & LEDs	P11
EISA slave slot	ES	External battery	P14
Speaker	J12	Serial port 2 (COM2)	P18
Floppy drive interface (A: and B:)	J20	32-bit external CPU/Memory module	S1
Third floppy drive interface	J21	32-bit external Memory module slots	S2 & S3
IDE interface	J22	Optional ROM (even)	U32
IDE interface LED	J23	Optional ROM (odd)	U33

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Factory configured - do not alter	E1	open
»	Factory configured - do not alter	E2	closed
»	Factory configured - do not alter	E3	open
»	Password check enabled	E4	pins 2 & 3 closed
	Password check disabled	E4	pins 1 & 2 closed
»	Factory configured - do not alter	E5	open
»	Factory configured - do not alter	E6	closed
»	Factory configured - do not alter	E7	pins 2 & 3 closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1
2MB	(2) 1M x 9	NONE
4MB	(2) 1M x 9	(2) 1M x 9
8MB	(2) 4M x 9	NONE
10MB	(2) 1M x 9	(2) 4M x 9
16MB	(2) 4M x 9	(2) 4M x 9
Notes:128KB of DRAM is reserved for System and VGA BIOS shadowing and cannot be disabled. Up to two of the following memory boards may be installed in addition to the CPU/Memory module: AST part numbers 202275-002, 202275-004, 202275-006, 202387-001, or 202387-005.