Intermec 6100 Guia De Referência

R

Serves four functions:

"

Display a message to the screen (like the Echo command)

"

Wait for some amount of time to expire before continuing (like a Sleep comĆ

mand or DOS 6 Choice command with a timeĆout specified)

"

Pause system execution until a key is pressed (like the Pause command)

"

Return an error level based on which key, if any, was pressed (like the DOS

6 Choice command)

The first three functions can be performed even when DELAY is loaded as a deĆ

vice driver.  Since the error level concept does not apply to CONFIG.SYS processĆ

ing, the fourth function applies only to command line (or batch file) execution.

1. To display the message Press any key to continue. . ., no command line paĆ

rameters are required.  To display one or more different messages, supply

the new messages in double quotes on the command line.  Each quoted text

string displays on a separate line.  A null message (") can be used to disĆ

play a blank line.  To keep the cursor positioned immediately following the

last character displayed, do not supply the trailing quote (").  To simply disĆ

play a message without waiting for either a timeĆout or a key press, specify

a delay timeĆout of zero (/0).

2. To force DELAY to exit after a period of time has elapsed, even if no key has

been pressed, specify a /nnnn" switch on the command line anywhere, even

within quoted text.  The value of nnnn is the decimal value for how many

hundredths of seconds that must elapse before DELAY automatically exits.

The maximum delay is about 640 seconds (or about 10 minutes).

3. No command line parameter is required to cause this program to wait for a

key press.  DELAY always exits whenever a key is pressed, even if it is

waiting for time to elapse first.

4. When DELAY is executed from a command shell, as opposed to being

loaded as a device driver, the error level set upon return is based on the

key, if any, that was pressed prior to exiting.  The return value is specificalĆ

ly geared to make it easy to tell which numeric key was pressed.

Table 1Ć7 

Error Level

Key Pressed

0

`0'

1

`1'

2

`2'

3

`3'

4

`4'

5

`5'

6

`6'

7

`7'

8

`8'

9

`9'

10

`:'

11

`;'

12 to 154

The values returned consist of the key value minus 30h.

255

No key was pressed; the time expired first