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SENSATION! (250-1650)

TANDY/RADIO SHACK

SENSATION! (250-1650)

Processor

80486SX/80487SX/ODP486

Processor Speed

25MHz

Chip Set

Unidentified

Video Chip Set

Unidentified

Maximum Onboard Memory

32MB

Maximum Video Memory

1MB

Cache

None

BIOS

Unidentified

Dimensions

394mm x 381mm

I/O Options

CD-ROM interface, floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial port, VGA feature connector, VGA port, riser slot, audio connector, fax/data modem connector, CD-ROM adapter, modem port MIDI/game port, microphone connector, headphone connector, line out connector

NPU Options

80487SX

CONNECTIONS

Purpose

Location

Purpose

Location

VGA feature connector

CN1

Serial port

Unidentified

Floppy drive interface

CN2

Parallel port

Unidentified

CD audio connector

CN3

MIDI/game port

Unidentified

Fax/data modem connector

CN4

Microphone connector

Unidentified

CD-ROM interface

CN5

Headphone connector

Unidentified

CD-ROM adapter

CN6

Line out connector

Unidentified

IDE interface

CN7

VGA port

Unidentified

PS/2 mouse port

Unidentified

Riser slot

SL1

USER CONFIGURABLE SETTINGS

Function

Label

Position

Factory configured - do not alter

J9

Unidentified

Synthesizer IRQ15 enabled

J11

Closed

 

Synthesizer IRQ15 disabled

J11

Open

Factory configured - do not alter

J12

Unidentified

Monitor type select color

J16

Closed

 

Monitor type select monochrome

J16

Open

Factory configured - do not alter

J17

Unidentified

Waveform IRQ5 enabled

J21

Closed

 

Waveform IRQ5 disabled

J21

Open

Monitor frequency select 31.5KHz

SW1/5

Off

 

Monitor frequency select 40KHz

SW1/5

On

Factory configured - do not alter

SW1/6

On

VGA IRQ9 disabled

SW1/7

Off

 

VGA IRQ9 enabled

SW1/7

On

On board video enabled

SW1/8

On

 

On board video disabled

SW1/8

Off

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

4MB

None

None

None

(1) 1M x 36

6MB

(1) 512K x 36

(1) 512K x 36

(1) 256K x 36

(1) 256K x 36

8MB

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

8MB

None

None

(1) 1M x 36

(1) 1M x 36

8MB

None

None

None

(1) 2M x 36

10MB

(1) 1M x 36

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

12MB

(1) 1M x 36

(1) 1M x 36

(1) 512K x 36

(1) 512K x 36

12MB

None

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

16MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

16MB

None

None

(1) 2M x 36

(1) 2M x 36

18MB

(1) 2M x 36

(1) 2M x 36

(1) 256K x 36

(1) 256K x 36

20MB

(1) 2M x 36

(1) 2M x 36

(1) 512K x 36

(1) 512K x 36

24MB

(1) 2M x 36

(1) 2M x 36

(1) 1M x 36

(1) 1M x 36

32MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

VIDEO MEMORY CONFIGURATION

Note: Board accepts 512KB/1MB of video memory. 512KB is factory installed and is not configurable. The size of the chips are unidentified. The number of banks is unidentified.

VIDEO RESOLUTION SELECTION (800 X 600)

Frequency

SW1/1

SW1/2

56Hz

Off

Off

 

60Hz

Off

On

 

72Hz

On

Off

 

56Hz

On

On

VIDEO RESOLUTION SELECTION (1024 X 768)

Frequency

SW1/3

SW1/4

56Hz interlaced

Off

Off

 

60Hz non-interlaced

Off

On