Measurement-computing Micro 488/EX rev.2.1 Uživatelský manuál stáhnout pdf (Strana 89)

Section 5 Command Descriptions

5.19

COUNT

The

COUNT

command returns the loop count, appended with the serial output

terminator(s), of the last invoked Macro buffer. The number returned is the remaining

number of loops left to execute. It, therefore, is a decrementing count. If Macro 1

requests a

COUNT

then calls Macro 0, any subsequent

COUNT

requests made by Macro

1 will return the Macro 0 loop

COUNT

. The following contents of Macro 1's buffer

should illustrate this…

MACRO 1

Creates Macro Buffer #1

COUNT

This will return Macro #1's loop count

DOMACRO 0

This command executes Macro #0

COUNT

This will return Macro #0's loop count since it

was the last Macro to be invoked

ENDM01

If Macro #1, in the previous example, was invoked multiple times, each time the

loop counts will be reported as described. This is due to the fact that looping is a re-

invocation of the looped Macro. This command is only valid when contained within a

Macro. Execution outside of a Macro will generate an '

INVALID

COMMAND

' error.

SYNTAX COUNT

RESPONSE numeric loop count (

255

) of last invoked Macro buffer.

MODE Any

BUS STATES None

EXAMPLE

10 PRINT #1,"MACRO"

Build Macro #0

20 PRINT #1,"COMMENT 'Loop Number =\'"

30 PRINT #1,"COUNT"

40 PRINT #1,"ENDM"

50 PRINT #1,"DOMACRO0,5" Execute the Macro five times

60 FOR N = 1 TO 5

70 INPUT #1,L$:PRINT L$

Read Comment & Count

80 NEXT N

1 2 ... 84 85 86 87 88 89 90 91 92 93 94 ... 217 218

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