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--- public:calculator:guides:dm41_snippets [03/07/22 17:48 BST] – [Example] john
+++ public:calculator:guides:dm41_snippets [06/03/25 06:49 GMT] (current) – external edit 127.0.0.1
@@ Line 2: / Line 2: @@
-====== DM41X : Snippets ======
+====== DM41X Snippets ======
+==== Advantage Pac : Flag 21 ====
+I found that using some of the Advantage Pac programs (e.g. ''MATRX'' or ''CFIT'') would lead to ''AVIEW'' instructions in programs run subsequently to cause a ''HALT'' - requiring use of the <key>R/S</key> key.
+I was told via a question on the [[https://forum.swissmicros.com/viewforum.php?f=24 | Swiss Micros Forum ]] that this was likely to be due to the Advantage Pac setting ''FLAG 21'' (printer active) to help in its own presentation of information on the display.
+''FLAG 21'' SET while ''FLAG 55'' is CLEAR (since there's no Printer Module active) causes AVIEW instructions to halt awaiting user intervention (<key>R/S</key> key)
+To restore things to //normal// : either ''CLEAR'' Flag 21 via ''CF'' or simply turn the calculator off and on again.
+See APPENDIX D in the HP41CX User Manual Volume 2 for a better explanation of the use of Flag 21 to control ''AVIEW'' behaviour.
+===== 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 =====
@@ Line 11: / Line 38: @@
   * 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>
+  * <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
@@ Line 19: / Line 46: @@
 Days between 27/2/66 and 31/5/22
-''27.021966'' <key>''ENTER''</key>
+''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>
+''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''
@@ Line 26: / Line 53: @@
 Check :
-''365'' <key>''÷''</key>
+''365'' <key>÷</key>
 Result ''56.293''
@@ Line 50: / Line 77: @@
   * 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.
+  * Pressing <key>STO</key> cancels the alarm but makes it a ''PAST DUE'' alarm.
 ==== Example ====
@@ Line 56: / Line 83: @@
 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>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 Z = repeat interval)
-  * <key>''0''</key> <key>''ENTER''</key> (for Y = Date = Today)
+  * <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>
+  * ''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 ''STO''//
+Alarm is cancelled by pressing //any key but <key>STO</key>//
-Pressing ''STO'' 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 ''STO'') and then the calculator will turn off. Pressing ''STO'' 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.
+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.