Kontron VMOD-2D Manual do Utilizador descarregar pdf (Página 54)

VMOD-2/VMOD-2D

12/15/97

Configuration

Page 3 - 7Man. ID 03139, Rev. Index 0200

See also table 3-8 below for further interrupt vector setting information,

which may be helpful to you, in order to see how and when to use the

three-pin setting options of jumpers B1 and B11.

3.1.5Using Interrupt Vector

Jumpers B4... B11 as described in the preceding section, provide a binary coded interrupt

vector, and may be freely programmed with each jumper representing an individual data bit,

B4 = MSB and B11 = LSB.

The table below will help you to decide when and how to use which settings, according to

what facilities your chosen piggybacks support.

Table 3-7:

Interrupt Vector Selection (With Jumper B1 BeingCompletely Open)

Interrupt Vector

Bit

D7 D6 D5 D4 D3 D2 D1 D0

Jumper Numbers

B04 B05 B06 B07 B08 B09 B10 B11

Jumper Decod-

ing

May be any setting "Don't Care" since these settings are ignored

Upper PBs Vec-

tor

Derived from "intelligent" piggyback

Lower PBs Vec-

tor

Derived from "intelligent" piggyback

Table 3-8: Interrupt Vector Configuration Examples

Configuration

Vector Modes

B1 Settings

B4...B11

Settings

1) Two piggybacks, both able

to generate interrupt vec-

tors are fitted to the VMOD-

2 and the user wants "intel-

ligent" vectors.

Use Piggyback

Generated

Vectors

Jumper B1

is left open.

Jumpers

B4... B11 ar e

not decoded

and ca n be lef t

in any setting.

2a) Two piggybacks, both

unable to ge nerat e inter-

rupt vectors but can send

interrupt request are fitted

to the VMOD-2 and use

"Dumb" vectors (both the

same vector)

Use the same

Jumper set

VMOD-2 Vec-

tor for both Pig-

gybacks

B1 is to be

set to 1-2.

Jumpers

B4... B10 ar e

set for appro-

priate byte cod-

ing. B11 is set

to 1- 2.

1 2 ... 49 50 51 52 53 54 55 56 57 58 59 ... 81 82

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