Caple C871i Bedienungsanleitung PDF herunterladen (Seite 67)

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Apple II Computer Info

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### Created : Friday, September 27, 1996 Modified: Friday, September 27, 1996

### File Type: "TEXT" File Creator: "LMAN"

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Path: news.uiowa.edu!chi-news.cic.net!uwm.edu!lll-

winken.llnl.gov!enews.sgi.com!news.mathworks.com!newsfeed.internetmci.com!news.uor

egon.edu!cie-2.uoregon.edu!nparker

From: [email protected] (Neil Parker)

Newsgroups: comp.sys.apple2

Subject: Re: Clock, BASIC, and IIgs

Date: 12 Jun 1996 07:52:02 GMT

Organization: University of Oregon Campus Information Exchange

Lines: 86

Message-ID: <[email protected]>

References: <[email protected]>

NNTP-Posting-Host: cie-2.uoregon.edu

In article <[email protected]> [email protected] (Snit) writes:

>Does anybody know how to access the clock from BASIC on a IIgs? Is

>there a way of doing something similaron a IIe (obviosly not wth the

>real time, unless you have a clock added). Specificly, I am trying to

>record the times of a photosensor attached to PDL (0) into a text file

>that can be imported into a spreadsheet or stats program. Thanks...

There are no BASIC commands for accessing the clock--the only good way to

do it is to call a machine-language routine.

The most portable way to access the clock is through ProDOS. Your BASIC

program calls this machine-language routine:

JSR $BF00

DFB $82 ; GET_TIME

DW 0

RTS

Then you can PEEK the time and date out of the ProDOS global page. The

minute is PEEK(49042), and the hour is PEEK(49043). The date is in

PEEK(49040) and PEEK(49041), but after PEEKing it, you have to unpack it

before you can use it (see the example below).

10 FOR X = 0 TO 6: READ Y: POKE 768 + X,Y: NEXT

20 DATA 32,0,191,130,0,0,96: REM Machine code

30 CALL 768

40 HR = PEEK (49043): REM Hour (0..23)

50 MI = PEEK (49042): REM Minute (0..59)

60 D = PEEK (49040) + 256 * PEEK (49041)

70 X = INT (D / 32)

80 DA = D - 32 * X: REM Day (1..31)

90 D = X:X = INT (D / 16)

100 MO = D - 16 * X: REM Month (1..12)

110 YR = X + 1940: REM Year (1940..2039)

If the day and the month are both zero, then either no clock is available,

Apple II Computer Technical Information : Apple II Family Hardware Info

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