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--- public:calculator:guides:dm41_snippets [08/04/24 00:49 BST] – [Example] john
+++ public:calculator:guides:dm41_snippets [06/03/25 06:49 GMT] (current) – external edit 127.0.0.1
@@ Line 3: / Line 3: @@
 ====== 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 =====
@@ Line 23: / 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 32: / Line 47: @@
 ''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 68: / 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 Y = Date = Today)