DM41X Hints & Tips - Make It Tea

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====== DM41X Snippets ======

===== Extended Memory =====

FIXME 

Copy a program to Extended Memory:

  * Put Prog's name in ''Alpha'' register
  * XEQ ''storep''
  * The prog remains in main memory but can be deleted (''CLP'') if memory needed
  * To restore to main memory put name in ''Alpha'' and then ''XEQ'' ''GETSUB''


===== DDAYS =====

**To find the number of days between two dates**


  * enter 1<sup>st</sup> date into Y-stack as ''dd.mmyyyy''
  * key in 2<sup>nd</sup> date into X-stack as ''dd.mmyyyy''
  * <key>XEQ</key> <key>ALPHA</key> <key>D</key> <key>D</key> <key>'A'</key> <key>Y</key> <key>'S'</key> <key>ALPHA</key> 
  * result is the difference in days.
  * ''DDAYS'' can be added to the ''CST'' program chooser to make it easier if multiple calculations are required

==== Example====

Days between 27/2/66 and 31/5/22

''27.021966'' <key>ENTER</key>
''31.052022'' <key>XEQ</key> <key>ALPHA</key> <key>D</key> <key>D</key> <key>'A'</key> <key>Y</key> <key>S</key> <key>ALPHA</key>

Result = ''20,547''

Check : 

''365'' <key>÷</key> 

Result ''56.293''

I'm 56 and a bit... sounds right...

===== XYZALM =====

**Various Alarm functions**

Put any message for the Alarm into the ''ALHPA'' register

Load the stack registers with:

  * Z : Repeat Interval ''HHHH.MMSSs'' or ''0'' 
  * Y : Date ''DD.MMYYYY'' or ''0''
  * X : Time ''HH.MMSSs''

Execute ''XYZALM'' to set the alarm

When alarm goes off it is ''acknowledged'' by pressing any key except ''STO''.
 
  * Acknowledging a non-repeating (i.e. ''Z'' was ''0'') alarm cancels it. 
  * Acknowledging a repeating alarm cancels it and re-arms it, adding the ''Repeat Interval'' to create the new alarm time.
  * Pressing <key>STO</key> cancels the alarm but makes it a ''PAST DUE'' alarm.

==== Example ====

Set alarm for 22:20, today, not repeating, called ''Supper''

  * <key>ALPHA</key> <key>'S'</key> <key>U</key> <key>P</key> <key>P</key><key>E</key><key>R</key> <key>ALPHA</key>
  * <key>0</key> <key>ENTER</key> (for Z = repeat interval)
  * <key>0</key> <key>ENTER</key> (for Y = Date = Today)
  * ''22.20'' <key>XEQ</key> <key>ALPHA</key> <key>X</key> <key>Y</key> <key>Z</key> <key>'A'</key> <key>L</key> <key>M</key> <key>ALPHA</key>

At ''22:20'' the alarm is activated. ''ALPHA'' shows ''SUPPER''. 

Alarm is cancelled by pressing //any key but <key>STO</key>//

Pressing <key>STO</key> creates a ''PAST DUE'' alarm which means it gets re-triggered if the calculator is turned off. It can be cancelled and deleted by pressing any key (except <key>STO</key>) and then the calculator will turn off. Pressing <key>STO</key> will create a new Past Due alarm, and allow the calculator to turn off. On turn on the Past Due alarm will still exist and turning off will trigger it again.

A Past Due alarm is useful to remind you that something happened previously and turning the calculator off is a memory-jogger.

''CATALOGUE 5'' ''R/S'' and ''⇑'' ''⇓'' steps through all alarms. 

To clear an alarm from the Catalogue: ''SHIFT'' ''C'' ( where ''C'' is ''√'' on top row )  





--- //John Pumford-Green 31/05/22 13:13//

Page last updated: ~~LASTMOD~~

{{tag>dm41x calculator}}

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