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TEMPO 486-25/33/50 EV-18173

EVEREX SYSTEMS, INC.

TEMPO 486-25/33/50 EV-18173

Processor

80486SX/80487SX/80486DX

Processor Speed

25/33/50MHZ

Chip Set

C & T/Suntac

Max. onboard DRAM

32MB

SRAM Cache

32/64KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

Floppy drive interface, front panel connector, IDE interface

parallel port, serial ports (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Parallel Port

CN1

Reset switch

J1

Serial Port (COM1)

CN2

Speaker

J3

Serial Port (COM2)

CN3

Front panel connector

J10

IDE interface

CN4

IDE interface LED

J13

Floppy drive interface

CN5

Unknown

J18

Note:The location of J1 is unknown.

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

Factory configured - do not alter

JP1

Unknown

Factory configured - do not alter

JP2

Unknown

Factory configured - do not alter

JP3

Unknown

Factory configured - do not alter

JP4

Unknown

I/O bus speed select 1 wait state

JP5

Open

 

I/O bus speed select 0 wait states

JP5

Closed

CMOS memory normal operation

JP8

Unknown

 

CMOS memory clear

JP11

Unknown

Factory configured - do not alter

JP11

Unknown

DRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(4) 256K x 9

NONE

2MB

(4) 256K x 9

(4) 256K x 9

4MB

(4) 1M x 9

NONE

5MB

(4) 1M x 9

(4) 256K x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

17MB

(4) 4M x 9

(4) 256K x 9

20MB

(4) 1M x 9

(4) 4M x 9

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Cache

TAG

Dirty Bit (DB)

32KB

(4) 8K x 8

(1) 8K x 8

(1) 16K x 1

64KB

(4) 16K x 8

(1) 16K x 8

(1) 16K x 1

COM1 DTE/DCE CONFIGURATION

Mode

Jumper Block COM1

DCE

DTE

COM2 DTE/DCE CONFIGURATION

Mode

Jumper Block COM2

DCE

DTE

CACHE RESISTOR CONFIGURATION

Size

TR1

TR2

32KB

Not Installed

Installed

64KB

Installed

Not Installed

CPU TYPE CONFIGURATION

TYPE

JP7

JP9

80486SX

Pins 2 & 3 closed

Open

80487SX

Pins 2 & 3 closed

Open

80486DX

Pins 1 & 2 closed

Closed