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EPX (EISA DESKTOP/ FT//EX DESKSIDE)

APRICOT COMPUTERS LIMITED

EPX (EISA DESKTOP/ FT//EX DESKSIDE)

Processor

80486SX/80487SX/ODP486SX/80486DX/80486DX2/Pentium Overdrive/Pentium (depends on CPU card installed)

Processor Speed

25/33/40/50/50(internal)/60/66(internal)/66/80MHz

Chip Set

Unidentified

Max. Onboard DRAM

128/256MB (depends on CPU card installed)

Cache

64/128/256/512/1024KB (depends on CPU card installed)

BIOS

Unidentified

Dimensions

330mm x 218mm

I/O Options

External CPU slot, 32-bit VESA local bus slots (2), IDE interface, SCSI connectors (2), parallel port, PS/2 mouse port, serial ports (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

PS/2 mouse port

CN1

SCSI connector

CN6

Serial port 1

CN2

Parallel port

CN7

Serial port 2

CN3

Reset switch

JP7

IDE interface

CN4

External CPU slot

SL1

SCSI connector

CN5

32-bit VESA local bus slots

SL2 & SL3

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Factory configured - do not alter

JP5

Open

Password enabled

JP6

Pins 1 & 2 closed

 

Password disabled

JP6

Pins 2 & 3 closed

IRQ type select IRQ10

JP8

Pins 1 & 2 closed

 

IRQ type select IRQ11

JP8

Pins 2 & 3 closed

On board buzzer enabled

JP9

Pins 1 & 2 closed

 

External speaker installed

JP9

Pins 2 & 3 closed

DRAM CONFIGURATION (80486 EPX DESKTOP & FT//EX DESKSIDE)

Size

Bank 0

Bank 1

Bank 2

Bank 3

4MB

(1) 1M x 36

NONE

NONE

NONE

8MB

(1) 2M x 36

NONE

NONE

NONE

8MB

(1) 1M x 36

(1) 1M x 36

NONE

NONE

12MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

NONE

16MB

(1) 2M x 36

(1) 2M x 36

NONE

NONE

16MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

16MB

(1) 4M x 36

NONE

NONE

NONE

20MB

(1) 1M x 36

(1) 4M x 36

NONE

NONE

24MB

(1) 1M x 36

(1) 1M x 36

(1) 4M x 36

NONE

24MB

(1) 1M x 36

(1) 4M x 36

(1) 1M x 36

NONE

28MB

(1) 1M x 36

(1) 1M x 36

(1) 4M x 36

(1) 1M x 36

28MB

(1) 1M x 36

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

32MB

(1) 8M x 36

NONE

NONE

NONE

32MB

(1) 4M x 36

(1) 4M x 36

NONE

NONE

36MB

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

NONE

36MB

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

NONE

40MB

(1) 1M x 36

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

40MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

(1) 4M x 36

40MB

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

48MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

NONE

52MB

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

52MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

64MB

(1) 8M x 36

(1) 8M x 36

NONE

NONE

64MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

64MB

(1) 16M x 36

NONE

NONE

NONE

72MB

(1) 1M x 36

(1) 1M x 36

(1) 16M x 36

NONE

80MB

(1) 4M x 36

(1) 16M x 36

NONE

NONE

84MB

(1) 1M x 36

(1) 4M x 36

(1) 16M x 36

NONE

84MB

(1) 4M x 36

(1) 16M x 36

(1) 1M x 36

NONE

88MB

(1) 1M x 36

(1) 1M x 36

(1) 4M x 36

(1) 16M x 36

88MB

(1) 4M x 36

(1) 16M x 36

(1) 1M x 36

(1) 1M x 36

96MB

(1) 4M x 36

(1) 4M x 36

(1) 16M x 36

NONE

96MB

(1) 4M x 36

(1) 16M x 36

(1) 4M x 36

NONE

DRAM CONFIGURATION (80486 EPX DESKTOP & FT//EX DESKSIDE CON'T)

Size

Bank 0

Bank 1

Bank 2

Bank 3

100MB

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

(1) 16M x 36

100MB

(1) 4M x 36

(1) 16M x 36

(1) 4M x 36

(1) 1M x 36

112MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 16M x 36

112MB

(1) 4M x 36

(1) 16M x 36

(1) 4M x 36

(1) 4M x 36

128MB

(1) 16M x 36

(1) 16M x 36

NONE

NONE

132MB

(1) 16M x 36

(1) 16M x 36

(1) 1M x 36

NONE

136MB

(1) 16M x 36

(1) 16M x 36

(1) 1M x 36

(1) 1M x 36

144MB

(1) 16M x 36

(1) 16M x 36

(1) 4M x 36

NONE

144MB

(1) 4M x 36

(1) 16M x 36

(1) 16M x 36

NONE

148MB

(1) 1M x 36

(1) 4M x 36

(1) 16M x 36

(1) 16M x 36

148MB

(1) 16M x 36

(1) 16M x 36

(1) 4M x 36

(1) 1M x 36

160MB

(1) 1M x 36

(1) 1M x 36

(1) 16M x 36

(1) 16M x 36

160MB

(1) 1M x 36

(1) 16M x 36

(1) 1M x 36

(1) 16M x 36

160MB

(1) 16M x 36

(1) 16M x 36

(1) 1M x 36

(1) 1M x 36

192MB

(1) 16M x 36

(1) 16M x 36

(1) 16M x 36

NONE

208MB

(1) 4M x 36

(1) 16M x 36

(1) 16M x 36

(1) 16M x 36

208MB

(1) 16M x 36

(1) 16M x 36

(1) 4M x 36

(1) 16M x 36

256MB

(1) 16M x 36

(1) 16M x 36

(1) 16M x 36

(1) 16M x 36

DRAM CONFIGURATION (PENTIUM EPX DESKTOP)

Size

Bank 0

Bank 1

Bank 2

Bank 3

8MB

(1) 1M x 36

(1) 1M x 36

NONE

NONE

16MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

16MB

(1) 2M x 36

(1) 2M x 36

NONE

NONE

24MB

(1) 1M x 36

(1) 1M x 36

(1) 2M x 36

(1) 2M 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

32MB

(1) 4M x 36

(1) 4M x 36

NONE

NONE

40MB

(1) 1M x 36

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

40MB

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

48MB

(1) 2M x 36

(1) 2M x 36

(1) 4M x 36

(1) 4M x 36

48MB

(1) 4M x 36

(1) 4M x 36

(1) 2M x 36

(1) 2M x 36

64MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

64MB

(1) 8M x 36

(1) 8M x 36

NONE

NONE

72MB

(1) 1M x 36

(1) 1M x 36

(1) 8M x 36

(1) 8M x 36

72MB

(1) 8M x 36

(1) 8M x 36

(1) 1M x 36

(1) 1M x 36

80MB

(1) 2M x 36

(1) 2M x 36

(1) 8M x 36

(1) 8M x 36

80MB

(1) 8M x 36

(1) 8M x 36

(1) 2M x 36

(1) 2M x 36

96MB

(1) 4M x 36

(1) 4M x 36

(1) 8M x 36

(1) 8M x 36

96MB

(1) 8M x 36

(1) 8M x 36

(1) 4M x 36

(1) 4M x 36

128MB

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

DRAM CONFIGURATION (PENTIUM FT//EX DESKSIDE MAINBOARD)

Size

Bank 0

Bank 1

Bank 2

Bank 3

8MB

(1) 1M x 36

(2) 1M x 36

NONE

NONE

16MB

(1) 1M x 36

(1) 1M x 36

NONE

NONE

24MB

(1) 1M x 36

(1) 1M x 36

(1) 2M x 36

(1) 2M x 36

32MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

56MB

(1) 1M x 36

(1) 1M x 36

(1) 2M x 36

(1) 2M x 36

64MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

120MB

(1) 1M x 36

(1) 1M x 36

(1) 2M x 36

(1) 2M x 36

128MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

256MB

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

Note: If installing 8MB or 24MB use only DRAM sockets on mainboard. Any other configuration uses this table and the table below.

DRAM CONFIGURATION (PENTIUM FT//EX DESKSIDE CPU BOARD)

Size

Bank 0

Bank 1

Bank 2

Bank 3

16MB

(1) 1M x 36

(1) 1M x 36

NONE

NONE

32MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

56MB

(1) 4M x 36

(1) 4M x 36

NONE

NONE

64MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

120MB

(1) 4M x 36

(1) 4M x 36

(1) 8M x 36

(1) 8M x 36

128MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

256MB

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

Note: If installing 8MB or 24MB use only DRAM sockets on mainboard. Any other configuration uses this table and the table above.

SCSI CONFIGURATION

Setting

JP1

JP2

Installed

Open

Open

Not installed

Closed

Closed

VESA WAIT STATE CONFIGURATION

Wait states

JP3

0 wait states

Pins 1 & 2 closed

1 wait state

Pins 2 & 3 closed

BUS SPEED CONFIGURATION

CPU speed

JP4

<= 33MHz

Pins 1 & 2 closed

> 33MHz

Pins 2 & 3 closed

BATTERY TYPE CONFIGURATION

Type

JP10

JP11

JP12

JP13

Dallas

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

B.M.

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

VLB LADS MHz support select 33MHz

JP3

Pins 1 & 2 closed

 

VLB LADS MHz support select 50MHz

JP3

Pins 2 & 3 closed

Local bus disabled

JP10

Pins 1 & 2 closed

 

Local bus enabled

JP10

Pins 2 & 3 closed

CACHE CONFIGURATION

Note: The bank configuration and chip sizes are unidentified by the manufacturer.

CACHE JUMPER CONFIGURATION

Size

JP11

JP12

JP13

JP14

JP18

JP19

JP20

64KB

Open

Open

Open

Open

Open

Open

Open

128KB

Closed

Open

Open

Open

Open

Closed

Open

256KB

Closed

Closed

Open

Open

Open

Closed

Closed

1024KB

Closed

Closed

Closed

Closed

Closed

Closed

Closed

CACHE BANK CONFIGURATION

Size

JP15

JP16

Single bank

Pins 1 & 2 closed

Pins 1 & 2 closed

Double bank

Pins 2 & 3 closed

Pins 2 & 3 closed

CPU TYPE CONFIGURATION

Type

JP4

80486SX

Pins 1 & 2 closed

80487SX

Pins 2 & 3 closed

ODP486SX

Pins 2 & 3 closed

80486DX/DX2

Open

Pentium Overdrive

Pins 2 & 3 closed

CPU SPEED CONFIGURATION

Speed

JP8

JP9

25MHz

Pins 1 & 2 closed

Pins 1 & 2 closed

33MHz

Pins 1 & 2 closed

Pins 2 & 3 closed

40MHz

Pins 2 & 3 closed

Pins 1 & 2 closed

50iMHz

Pins 1 & 2 closed

Pins 1 & 2 closed

50MHz

Pins 2 & 3 closed

Pins 2 & 3 closed

66iMHz

Pins 1 & 2 closed

Pins 2 & 3 closed

CPU CLOCK SPEED CONFIGURATION

Speed

JP1

JP2

25MHz

Open

Open

33MHz

Open

Closed

40MHz

Closed

Open

50iMHz

Open

Open

50MHz

Closed

Closed

66iMHz

Open

Closed

BUS SPEED CONFIGURATION

CPU speed

JP17

<= 33MHz

Pins 1 & 2, 3 & 4 closed

> 33MHz

Pins 2 & 3 closed

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Factory configured - do not alter

JP4

Open

CACHE CONFIGURATION

Note: The bank configuration and chip sizes are unidentified by the manufacturer.

CACHE JUMPER CONFIGURATION

Size

JP11

JP12

JP14

JP15

256KB

Open

Open

Open

Open

1024KB

Closed

Closed

Closed

Closed

CPU OSCILLATOR SPEED CONFIGURATION

Speed

JP1

JP2

JP3

33MHz

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

40MHz

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

50MHz

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

60MHz

Pins 2 & 3 closed

N/A

N/A

66MHz

N/A

Pins 1 & 2 closed

Pins 1 & 2 closed

80MHz

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Local bus enabled

JP4

Pins 1 & 2 closed

 

Local bus disabled

JP4

Pins 2 & 3 closed

CACHE CONFIGURATION

Note: The bank configuration and chip sizes are unidentified by the manufacturer.

CACHE JUMPER CONFIGURATION

Size

JP10

JP11

JP12

JP13

JP14

JP15

128KB

Open

Open

Open

Open

Open

Open

256KB

Closed

Open

Open

Closed

Open

Open

512KB

Closed

Closed

Open

Closed

Closed

Open

1024KB

Closed

Closed

Closed

Closed

Closed

Closed

CACHE BANK CONFIGURATION

Size

JP8

JP9

Single bank

(4) 8K x 8

(1) 8K x 8

Double bank

(4) 32K x 8

(1) 32K x 8

CPU OSCILLATOR SPEED CONFIGURATION

Speed

JP1

JP2

JP3

33MHz

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

40MHz

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

50MHz

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

66MHz

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

80MHz

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed