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MIO-550

DIAMOND FLOWER INC.

MIO-550

Data bus: 16-bit, ISA

Size: Half-length, full-height card

Hard drives supported: Two IDE (AT) Interface drives

Floppy drives supported: Two 360KB, 720KB, 1.2MB, or 1.44MB drives

CONNECTIONS

Function

Location

2-pin connector-drive active LED

CN1

34-pin data cable connector-floppy drive

CN2

16-pin connector-game port

CN3

10-pin connector-serial port 2

CN4

40-pin IDE (AT) Interface connector-internal

CN5

DB-9 male connector-serial port 1

CN6

DB-25 female connector-parallel port

CN7

USER CONFIGURABLE SETTINGS

Function

Location

Setting

Serial Port 1 (CN6) DMA disabled

JP1

open

 

Serial Port 1 (CN6) DMA enabled

JP1

closed

Serial Port 2 (CN4) DMA disabled

JP1A

open

 

Serial Port 2 (CN4) DMA enabled

JP1A

closed

Baud rate up to 448Kbps (Clock input is 7.3728)

JP2

pins 1 & 2 closed

 

Baud rate up to 56Kbps (Clock input is 1.8432)

JP2

pins 2 & 3 closed

Game port enabled

JP3/jumper 11

closed

 

Game port disabled

JP3/jumper 11

open

Floppy drive enabled

JP3/jumper 12

closed

 

Floppy drive disabled

JP3/jumper 12

open

Hard drive enabled

JP3/jumper 13

closed

 

Hard drive disabled

JP3/jumper 13

open

SERIAL PORT CONFIGURATION JUMPERS - JP3

JUMPERS 1-4 - SERIAL PORT 1 (DEFAULT SETTING = )

JUMPERS 5-8 - SERIAL PORT 2 (DEFAULT SETTING = Í )

COM

Jumper 1/5

Jumper 2/6

Jumper 3/7

Jumper 4/8

COM1 (3F8)

open

open

open

closed

í COM2 (2F8)

open

closed

open

open

 

COM3 (3E8)

open

open

closed

open

 

COM4 (2E8)

closed

open

open

open

PARALLEL PORT CONFIGURATION JUMPERS - JP3

LPT

JP3 Jumper 9

JP3 Jumper 10

LPT1 (378)

open

closed

 

LPT2 (278)

closed

open

SERIAL PORT IRQ JUMPERS - JP4

JUMPERS 1-4 - SERIAL PORT 1 (DEFAULT SETTING = )

JUMPERS 5-8 - SERIAL PORT 2 (DEFAULT SETTING = Í )

IRQ

Jumper 1/5

Jumper 2/6

Jumper 3/7

Jumper 4/8

 

IRQ2

closed

open

open

open

 

IRQ5

open

closed

open

open

IRQ4

open

open

closed

open

í IRQ3

open

open

open

closed

PARALLEL PORT IRQ

IRQ

JP4 Jumper 9

JP4 Jumper 10

 

IRQ5

closed

open

IRQ7

open

closed

SERIAL PORT DMA MODE SELECT JUMPERS - JP5

PINS 1-8 - SERIAL PORT 1 (DEFAULT SETTING = )

PINS 9-16 - SERIAL PORT 2 (DEFAULT SETTING = Í )

DMA

Serial Port 1 (CN6)

Serial Port 2 (CN4)

Receive DMA1

pins 3 & 4 and 7 & 8 closed

pins 11 & 12 and 15 & 16 closed

 

Transmit DMA1

pins 1 & 3 and 7 & 8 closed

pins 9 & 11 and 15 & 16 closed

í Receive DMA3

pins 2 & 4 and 5 & 6 closed

pins 10 & 12 and 13 & 14 closed

 

Transmit DMA3

pins 1 & 2 and 5 & 6 closed

pins 9 & 10 and 13 & 14 closed