beautypg.com

Measurement Computing Daq PC-Card User Manual

Page 49

background image

Daq* Hardware

DaqBoards [ISA-types Only]

DaqBook / DaqBoard [ISA-types] / Daq PC-Card User’s Manual

10-18-00

Daq* Hardware 3-19

Base Address (SW1)

The computer must know the DaqBoard’s base address. Check the base address setting (3-digit hex) on the
Base Address switch (see figure). The factory default is 300 hex (within the standard range for a prototype
card; see table). If the default value does not work, you must select an address within 200 to 3FF (256 to
1023 decimal). In addition, the address must be on a 4-byte boundary, and it must not conflict with
addresses already in use.

External Analog Expansion Power (JP1)

This 4×2 header (JP1) has 3 possible
settings. If analog option cards (DBKs) are
used, the JP1 pins are set to provide
±15 VDC to the cards. If such cards are
not used, the counter/timer CTR0 is
available, and JP1 must be set accordingly.
The default setting is for use of analog
option cards.

&$87,21

If using a DBK32A Auxiliary Power Supply or a DBK33 Triple-Output Power
Supply Card, the JP1 shunt jumpers must be entirely removed. Placing the
jumpers on -OCTOUT and -OCLKIN will damage the 8254 timer chip.

Refer to the

Power Management

section in chapter 7, DBK Option Cards and Modules, as needed.

Industry Standard I/O Addresses

Note: Systems vary. This is only a guide.

Hex Range

Device

000-1FF

Internal system

200-207

Game I/O

20C-20D

Reserved

21F

Reserved

278-27F

Parallel printer port 2

2B0-2DF

Alternate enhanced graphics adapter

2E1

GPIB (Adapter 0)

2E2 & 2E3

Data acquisition (Adapter 0)

2F8-2FF

Serial port 2

300-31F

Prototype card

360-363

PC network (low address)

364-367

Reserved

368-36B

PC network (high address)

36C-36F

Reserved

378-37F

Parallel printer port 1

380-38F

SDLC, bisynchronous 2

390-393

Reserved

3A0-3AF

Bisynchronous 1

3B0-3BF

Monochrome display and printer adapter

3C0-3CF

Enhanced graphics adapter

3D0-3DF

Color/Graphics monitor adapter

3F0-3F7

Diskette Controller

3F8-3FF

Serial port 1

Note: I/O addresses, hex 000 to 0FF, are reserved for

the system board I/O. Hex 100 to 3FF are available on
the I/O channel.

304

308

30C

310

300

Fa ctory
D e fau lt

0
1

6 7 8

5

2 3

1

4

O P E N

A2 A3 A4 A5 A6 A7 A8 A9

0
1

6 7 8

5

2 3

1

4

O P E N

A2 A3 A4 A5 A6 A7 A8 A9

0

1

6 7 8

5

2 3

1

4

O P E N

A2 A3 A4 A5 A6 A7 A8 A9

0
1

6 7 8

5

2 3

1

4

O P E N

A2 A3 A4 A5 A6 A7 A8 A9

0
1

6 7 8

5

2 3

1

4

O P E N

A2 A3 A4 A5 A6 A7 A8 A9

Sample Base Addresses on SW1

JP 1

-1 5 V

-O C TO U T

-O C L K IN

+1 5 V

A n a lo g O ptio n

C ard U se

JP 1

-1 5V

-O C TO U T

-O C L K IN

+1 5 V

C o un te r/Tim e r U se

(1 6-bit m o d e on ly)

JP 1

-1 5 V

-O C TO U T

-O C L K IN

+1 5 V

D B K 3 2A o r D B K 3 3

O p tio n C a rd U se

JP1 External Analog Expansion Settings