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2) make board connections, Calibration, Dma and interrupt – Measurement Computing Daq PC-Card User Manual

Page 16: Base address

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1-8 DaqBoard [ISA Type] Quick Start Guide

01-11-00

457-0942, rev 1.2

JP7

Calibration

Leave JP7 in default position. Only use JP7 during calibration. See user’s manual.

JP8 –

DMA and Interrupt

Interrupt Selection. DaqBoard may be set to interrupt the PC when certain hardware conditions occur. The interrupt may
be set to IRQ level 10, 11, 12, 14 or 15. DaqBoard’s IRQ level cannot be shared with another device. To disable interrupt
assistance and background transfers you can configure JP8 to “Open Interrupt” (see following figure).

DMA Selection. Direct Memory Access (DMA) configuration provides for:

(a)

high-speed data transfer from the ADC FIFO, or

(b)

high-speed data transfer to the DAC FIFO.

Only DMA channels 5-7 (of an ISA AT machine’s seven channels) are available to DaqBoard.
Set DRQ and DACK jumpers to the desired DMA channels. Note that DaqBoard does not share DMA channels.
Set the DMA jumpers to OPEN when other devices will be using DMA channels 5, 6 and 7.

SW1

- Base Address

SW1’s factory default is 300 Hex. If 300 Hex presents an address conflict, set a new SW1 address within the range of
1FF to 3FF (256 to 1023 Decimal). Note that the address must be on a 4-byte boundary.

(2) Make Board Connections

Before connecting your DaqBoard, you should review the following connector descriptions.

P1 Analog I/O. Provides 16 analog input channels, 2 analog output channels, a 16-bit counter/timer, 4 TTL inputs and
outputs, and various signals for driving expansion cards.

P2 Digital I/O. Provides three 8-bit TTL programmable I/O ports and external interrupt input. To ensure reliable
operation, for P2 expansion cables do not exceed 14 inches per attached DBK card.

P3 Frequency I/O. Provides five 16-bit counters and 16 high-speed digital inputs and external interrupt input.

Industry Standard I/O Addresses

Hex Range

Device

Hex Range

Device

000-1FF

Internal system

368-36B

PC network (high address)

200-207

Game I/O

36C-36F

Reserved

20C-20D

Reserved

378-37F

Parallel printer port 1

21F

Reserved

380-38F

SDLC, bisynchronous 2

278-27F

Parallel printer port 2

390-393

Reserved

2B0-2DF

Alternate enhanced graphics adapter

3A0-3AF

Bisynchronous 1

2E1

GPIB (Adapter 0)

3B0-3BF

Monochrome display and printer adapter

2E2 & 2E3

Data acquisition (Adapter 0)

3C0-3CF

Enhanced graphics adapter

2F8-2FF

Serial port 2

3D0-3DF

Color/Graphics monitor adapter

300-31F

Prototype card

3F0-3F7

Diskette Controller

360-363

PC network (low address)

3F8-3FF

Serial port 1

364-367

Reserved

Notes:
(1) SW1’s address must be unique, i.e., not used by another device.
(2) I/O addresses, hex 000 to 0FF, are reserved for system board I/O.
(3) Hex 100 to 3FF are available on the I/O channel.
(4) Although the above table represents industry standards, some systems may vary.