MICRO EQUIPMENT CORPORATION

UN-1081 VL

Data bus:

32-bit VL-Bus

Size:

Three/quarter, full-height card

Hard drive supported:

Two IDE (AT) interface drives

Floppy drives supported:

Two 360KB, 720KB, 1.2MB, or 1.44MB drives

CONNECTIONS

Function

Location

4-pin connector - drive active LED

J1

40-pin IDE (AT) interface connector

J2

34-pin control cable connector - floppy drive

J3

16-pin game port - internal

J4

10-pin serial port - external (via ribbon cable)

J5

10-pin serial port - internal

J6

25-pin parallel port - external

P1

USER CONFIGURABLE SETTINGS

Function

Location

Setting

»

HDD IRQ14 select

W6/pins 1 & 2

closed

 

HDD IRQ15 select

W6/pins 2 & 3

closed

»

Floppy drive primary address is 3F0h - 3F7h

W7/pins 2 & 3

closed

 

Floppy drive secondary address is 370h - 377h

W7/pins 1 & 2

closed

»

IDE (AT) primary address is 1F0h - 1F7h, & 3F6h - 3F7h

W8/pins 2 & 3

closed

 

IDE (AT) secondary address is 170h - 177h, & 376h - 377h

W8/pins 1 & 2

closed

»

IDE (AT) interface enabled

W9/pins 1 & 2

closed

 

IDE (AT) interface disabled

W9/pins 2 & 3

closed

»

Floppy controller enabled

W10/pins 1 & 2

closed

 

Floppy controller disabled

W10/pins 2 & 3

closed

»

Printer port unidirectional select

W17/pins 1 & 2

closed

 

Printer port bidirectional select

W17/pins 2 & 3

open

»

Game port enabled

W26

closed

 

Game port disabled

W26

open

IDE (AT) TRANSFER RATE CONFIGURATION

Trans. Rate

VL Speed

W1

W2

W3

W4

W5

»

3.9MB/sec

£ 33MHz

1 & 2

2 & 3

2 & 3

2 & 3

1 & 2

 

3.3MB/sec

£ 33MHz

2 & 3

2 & 3

1 & 2

2 & 3

1 & 2

 

3.3MB/sec

<33MHz

1 & 2

2 & 3

1 & 2

2 & 3

2 & 3

 

3.5MB/sec

£ 33MHz

2 & 3

1 & 2

2 & 3

2 & 3

1 & 2

 

3.6MB/sec

>33MHz

1 & 2

1 & 2

2 & 3

2 & 3

2 & 3

 

3.7MB/sec

£ 33MHz

2 & 3

1 & 2

1 & 2

2 & 3

1 & 2

 

3.8MB/sec

>33MHz

1 & 2

1 & 2

1 & 2

2 & 3

2 & 3

 

4.2MB/sec

£ 33MHz

1 & 2

2 & 3

1 & 2

2 & 3

1 & 2

 

4.2MB/sec

>33MHz

2 & 3

2 & 3

2 & 3

1 & 2

2 & 3

 

4.4MB/sec

£ 33MHz

1 & 2

1 & 2

2 & 3

2 & 3

1 & 2

 

4.5MB/sec

>33MHz

2 & 3

2 & 3

1 & 2

1 & 2

2 & 3

 

4.8MB/sec

£ 33MHz

1 & 2

1 & 2

1 & 2

2 & 3

1 & 2

 

5.0MB/sec

>33MHz

2 & 3

1 & 2

2 & 3

1 & 2

2 & 3

 

5.1MB/sec

£ 33MHz

2 & 3

2 & 3

2 & 3

1 & 2

1 & 2

 

5.6MB/sec

£ 33MHz

2 & 3

2 & 3

1 & 2

1 & 2

1 & 2

 

5.6MB/sec

>33MHz

2 & 3

1 & 2

1 & 2

1 & 2

2 & 3

IDE (AT) TRANSFER RATE CONFIGURATION (CON’T)

Trans. Rate

VL Speed

W1

W2

W3

W4

W5

6.1MB/sec

£ 33MHz

2 & 3

1 & 2

2 & 3

1 & 2

1 & 2

6.3MB/sec

>33MHz

1 & 2

2 & 3

2 & 3

1 & 2

2 & 3

6.7MB/sec

£ 33MHz

2 & 3

1 & 2

1 & 2

1 & 2

1 & 2

7.2MB/sec

>33MHz

1 & 2

1 & 2

1 & 2

1 & 2

2 & 3

7.4MB/sec

£ 33MHz

1 & 2

2 & 3

2 & 3

1 & 2

1 & 2

8.3MB/sec

£ 33MHz

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

Note: Pins designated are in the closed position.

SERIAL PORT 1 CONFIGURATION

COM

W11

W12

»

COM1 (3F8h)

pins 1 & 2 closed

pins 2 & 3 closed

 

COM3 (3E8h)

pins 2 & 3 closed

pins 1 & 2 closed

 

COM4 (2E8h)

pins 1 & 2 closed

pins 1 & 2 closed

 

Disabled

pins 2 & 3 closed

pins 2 & 3 closed

SERIAL PORT 2 CONFIGURATION

COM

W13

W14

»

COM2 (2F8h)

pins 1 & 2 closed

pins 2 & 3 closed

 

COM3 (3E8h)

pins 1 & 2 closed

pins 1 & 2 closed

 

COM4 (2E8h)

pins 2 & 3 closed

pins 1 & 2 closed

 

Disabled

pins 2 & 3 closed

pins 2 & 3 closed

PARALLEL PORT CONFIGURATION

LPT

W15

W16

»

LPT1 (378h)

pins 2 & 3 closed

pins 1 & 2 closed

 

LPT2 (278h)

pins 1 & 2 closed

pins 2 & 3 closed

 

LPT3 (3BCh)

pins 1 & 2 closed

pins 1 & 2 closed

 

Disabled

pins 2 & 3 closed

pins 2 & 3 closed

SERIAL PORT 1 INTERRUPT SELECTION

IRQ

W18

W19

W20

»

4

closed

open

open

 

3

open

closed

open

 

5

open

open

closed

SERIAL PORT 2 INTERRUPT SELECTION

IRQ

W21

W22

W23

»

3

closed

open

open

 

4

open

closed

open

 

5

open

open

closed

PARALLEL PORT INTERRUPT SELECTION

IRQ

W24

W25

»

7

closed

open

 

5

open

closed