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--- public:calculator:guides:dm41_snippets [03/08/24 15:05 BST] – john
+++ public:calculator:guides:dm41_snippets [19/01/26 07:30 GMT] (current) – [Module Switching] john
@@ Line 2: / Line 2: @@
-====== DM41X Snippets ======
+====== DM41X Hints & Tips ======
-==== Advantage Pac : Flag 21 ====
+===== Module Switching =====
-I found that using any Advantage Pac program (e.g. ''MATRX'' or ''CFIT'') would lead to ''PSE'' instructions in programs run subsequently to be interpreted as ''STOP'' - requiring use of the <key>R/S</key> key.
+Using the [[dm41x_ladybug_module| Ladybug module]] for Integer/Base calculations means it's impossible to also have the [[41z_module| 41Z complex number module]] or the [[hp16c_emulator| HP16C simulator module]] and the necessary library "plugged in" at the same time. There is a clash between ''Library 4'' needed for ''41z'' (and also needed for ''16C'') and ''OS/4'' which is needed for ''Ladybug''.
+I've used the DM41X "module save/load" function to have different module-plugged states:
+  * ''41z.m41'' : with ''41Z 2x2 Deluxe'' and ''Library 4'' modules active
+  * ''16c.m41'' : with ''HP16 C Simulator'' and ''Library 4'' modules active
+  * ''lady.m41'' : with ''Boost'', ''OS/4'' and ''Ladybug'' modules active
+  * ''adv.m41'' : with ''Advantage Pac'' module active
+These are accessed via ''setup'' -> ''2. Module'' -> ''4. Load Modules'' -> ''1. Load AM list''
+Choosing the required *.m41 file will automatically unplug/plug whichever modules were active when the config. was saved.
+This makes it easier to remember which supporting library/module are needed to use each particular module's functions.
+It's possible to also save the ''flash'' state - which modules have been pre-loaded into the DM41X's Flash Memory making them //available// to be //plugged in// using different options at the ''setup'' ''2. Module'' choices.... you'll work it out.
+===== 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.
-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'' turns ''PSE'' into ''STOP'', it appears.