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MIO-550 (REV.C/D)

DIAMOND FLOWER, INC.

MIO-550 (REV.C/D)

Card Type

Hard drive controller

Hard Drives supported

Two IDE (AT) drives

Floppy drives supported

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

Data Bus

16-bit ISA

Card Size

Half-length, full-height

CONNECTIONS

Function

Location

Function

Location

2-pin connector - drive active LED

J1

40-pin IDE(AT) connector

J5

34-pin cable connector - floppy drive

J2

9-pin serial port 1 - external

J6

16-pin game port

J3

25-pin parallel port - external

J8

10-pin serial port 2 - internal

J4

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

Serial port 1 DMA enabled

JP1/pins 1 & 3

Closed

 

Serial port 1 DMA disabled

JP1/pins 1 & 3

Open

Serial port 2 DMA enabled

JP1/pins 2 & 4

Closed

 

Serial port 2 DMA disabled

JP1/pins 2 & 4

Open

1.8432MHz input clock of UART enabled

JP2

Pins 2 & 3 closed

 

7.3728MHz input clock of UART enabled

JP2

Pins 1 & 2 closed

Game port enabled

JP3/11

Closed

 

Game port disabled

JP3/11

Open

Floppy drive interface enabled

JP3/12

Closed

 

Floppy drive interface disabled

JP3/12

Open

IDE(AT) interface enabled

JP3/13

Closed

 

IDE(AT) interface disabled

JP3/13

Open

Parallel port is uni-directional

JP6

Closed

 

Parallel port is bi-directional

JP6

Open

Note:When the 1.8432MHz is selected, the MIO-550 supports up to 56K bps. When the 7.3728MHz clock is selected, the MIO-550 supports up to 448K bps.

SERIAL PORT 1 DMA CHANNEL SELECTION

Channel

JP5/pins 1 & 2

JP5/pins 3 & 4

JP5/pins 5 & 6

JP5/pins 7 & 8

1 (receive)

Open

Closed

Open

Closed

 

1 (transmit)

Pins 1 & 3 closed

Open

Closed

 

3 (receive)

Pins 2 & 4 closed

Closed

Open

 

3 (transmit)

Closed

Open

Closed

Open

Note:When selecting DMA, make sure JP1/pins 1 & 3 are closed.

SERIAL PORT 2 DMA CHANNEL SELECTION

Channel

JP5/pins 9 & 10

JP5/pins 11 & 12

JP5/pins 13 & 14

JP5/pins 15 & 16

 

1 (receive)

Open

Closed

Open

Closed

 

1 (transmit)

Pins 9 & 11 closed

Open

Closed

3 (receive)

Pins 10 & 12 closed

Closed

Open

 

3 (transmit)

Closed

Open

Closed

Open

Note:When selecting DMA, make sure JP1/pins 2 & 4 are closed.

PARALLEL PORT ADDRESS SELECTION

Setting

JP3/9

JP3/10

LPT1 (378h)

Open

Closed

 

LPT2 (278h)

Closed

Open

 

Disabled

Open

Open

SERIAL PORT 1 ADDRESS SELECTION

Setting

JP3/1

JP3/2

JP3/3

JP3/4

COM1 (3F8h)

Open

Open

Open

Closed

 

COM2 (2F8h)

Open

Closed

Open

Open

 

COM3 (3E8h)

Open

Open

Closed

Open

 

COM4 (2E8h)

Closed

Open

Open

Open

 

Disabled

Open

Open

Open

Open

SERIAL PORT 2 ADDRESS SELECTION

Setting

JP3/5

JP3/6

JP3/7

JP3/8

 

COM1 (3F8h)

Open

Open

Open

Closed

COM2 (2F8h)

Open

Closed

Open

Open

 

COM3 (3E8h)

Open

Open

Closed

Open

 

COM4 (2E8h)

Closed

Open

Open

Open

 

Disabled

Open

Open

Open

Open

SERIAL PORT 1 INTERRUPT SELECTION

IRQ

JP4/1

JP4/2

JP4/3

JP4/4

 

IRQ2

Closed

Open

Open

Open

 

IRQ3

Open

Open

Open

Closed

IRQ4

Open

Open

Closed

Open

 

IRQ5

Open

Closed

Open

Open

SERIAL PORT 2 INTERRUPT SELECTION

IRQ

JP4/5

JP4/6

JP4/7

JP4/8

 

IRQ2

Closed

Open

Open

Open

IRQ3

Open

Open

Open

Closed

 

IRQ4

Open

Open

Closed

Open

 

IRQ5

Open

Closed

Open

Open

PARALLEL PORT INTERRUPT SELECTION

IRQ

JP4/9

JP4/10

 

IRQ5

Closed

Open

IRQ7

Open

Closed