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| public:calculator:info:dm15l_information [27/01/26 18:05 GMT] – [Swiss Micros Official] john | public:calculator:info:dm15l_information [01/02/26 08:35 GMT] (current) – [Update January 2026] john |
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| ''sudo lpc21isp <firmware_file> /dev/ttyUSB0 115200 12000'' | ''sudo lpc21isp <firmware_file> /dev/ttyUSB0 115200 12000'' |
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| ==== Swiss Micros Official ==== | ==== Upgrade firware on Windows ==== |
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| === Serial USB Driver for Windows === | === Serial USB Driver for Windows === |
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| {{ :public:calculator:voyage_firmware_tool.zip |}} | {{ :public:calculator:voyage_firmware_tool.zip |}} |
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| | ==== Swiss Micros Official ==== |
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| | === Swiss Micros Firmware files === |
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| ^Date^Serial No.^Firmware^Version^Firmware Files^Comments^ | ^Date^Serial No.^Firmware^Version^Firmware Files^Comments^ |
| |24/05/22 |21350 |DM15_M1B |V32 |{{ :public:calculator:dm15_m1b_32.zip |}}| Extended User Registers| | |24/05/22 |21350 |DM15_M1B |32 |{{ :public:calculator:dm15_m1b_32.zip |}}| Extended User Registers| |
| |22/11/23|21350|DM15|V32| {{ :public:calculator:info:dm15_32.zip |}} | Standard User Registers | | |22/11/23|21350|DM15|32| {{ :public:calculator:info:dm15_32.zip |}} | Standard User Registers | |
| |21/12/24 | 21350 | DM15_M1B | V33 | {{ :public:calculator:info:dm15_m1b_33.zip |}}| New 2-line stack and other mods | | |21/12/24 | 21350 | DM15_M1B | 33 | {{ :public:calculator:info:dm15_m1b_33.zip |}}| New 2-line stack and other mods | |
| |23/01/26 | 21350 | DM15_M1B | V34 | {{ :public:calculator:info:dm15_m1b_34.hex |}} | Bug fixes to new version | | |23/01/26 | 21350 | DM15_M1B | 34 | {{ :public:calculator:info:dm15_m1b_34.hex |}} | Bug fixes to new version | |
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| ^ROM ^ Allocatable registers ^ RAM base addr. ^ Initial Memory Status^ | ^ROM ^ Allocatable registers ^ RAM base addr. ^ Initial Memory Status^ |
| * From HP Forum [[https://www.hpmuseum.org/forum/thread-20046.html]] | * From HP Forum [[https://www.hpmuseum.org/forum/thread-20046.html]] |
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| ++++ Tabulated List of LF15C firmware versions | | For more details see [[LF15C]] |
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| ^Date^Firmware^Version^Firmware File^Comments^ | |
| |12/09/24 | LF15C | beta240911| {{ :public:calculator:info:lf15c_beta240911.zip |}} | initial public beta | | |
| |15/09/24 | LF15C | beta240914 | {{ :public:calculator:info:lf15c_beta240914.zip |}} | | | |
| |17/09/24 | LF15C | beta240916 | {{ :public:calculator:info:lf15c_beta240916.zip |}} | | | |
| |17/09/24 | LF15C | beta240916_2 | {{ :public:calculator:info:lf15c_beta240916_2.zip |}} | | | |
| | 21/09/24 | LF15C | beta240920 | {{ :public:calculator:info:lf15c_beta240920.zip |}} | very fast [[..:bench2#Results| benchmarking]], roots of -ve numbers bug | | |
| | 21/09/24 | LF15C | beta240921 | {{ :public:calculator:info:lf15c_beta240921.zip |}} | Fix of "powers of negative numbers" bug, new 10%%^%%x bug | | |
| | 23/09/24 | LF15C | beta240923 | {{ :public:calculator:info:lf15c_beta240923.zip |}} | 10%%^%%x fix, other bug fixes | | |
| |25/09/24 | LF15C | beta240925 | {{ :public:calculator:info:lf15c_beta240925.zip |}} | [[https://www.hpmuseum.org/forum/thread-20046-post-192246.html#pid192246 | Bug fixes]] [[https://www.hpmuseum.org/forum/thread-20046-post-192255.html#pid192255 | More new bugs]] | | |
| |28/09/24| LF15C | beta240928 | {{ :public:calculator:info:lf15c_beta240928.zip |}} | [[https://www.hpmuseum.org/forum/thread-20046-post-192465.html#pid192465 | bug fixes ]] | | |
| | 30/09/24 | LF15C | beta240929 | {{ :public:calculator:info:lf15c_beta240929.zip |}} | [[https://www.hpmuseum.org/forum/thread-20046-post-192556.html#pid192556 | Bug Fixes etc. ]] | | |
| | 30/09/24 | LF15C | beta240929_2 | {{ :public:calculator:info:lf15c_beta240929_2.zip |}} | [[https://www.hpmuseum.org/forum/thread-20046-post-192560.html#pid192560 | RCL I Bug fix ]]| | |
| | 01/10/24 | LF15C | beta240930 | {{ :public:calculator:info:lf15c_beta240930.zip |}} | [[https://www.hpmuseum.org/forum/thread-20046-post-192625.html#pid192625 | Bug Fixes ]] | | |
| | 02/10/24 | LF15C | debug241001 | {{ :public:calculator:info:lf15c_debug_for_john241001.zip |}} | [[https://www.hpmuseum.org/forum/thread-20046-post-192676.html#pid192676 | version pre-loaded with my B.Fil prog for debug purposes ]] | | |
| | 02/10/24 | LF15C | beta241002 | {{ :public:calculator:info:lf15c_beta241002.zip |}} | [[https://www.hpmuseum.org/forum/thread-20046-post-192696.html#pid192696| Bug Fix ]] my B.Fil runs correctly. No known showstoppers left? | | |
| | 03/10/24 | LF15C | beta241003 | {{ :public:calculator:info:lf15c_beta241003.zip |}} | fPREFIX fix. Discovered inverse HYP SIN bug | | |
| | 06/10/24 | LF15C | beta241005 | {{ :public:calculator:info:lf15c_beta241005.zip |}} |[[https://www.hpmuseum.org/forum/thread-20046-post-192859.html#pid192859 | fixes ]],HYP ASIN bug still present | | |
| | 07/10/24 | LF15C | beta241006 | {{ :public:calculator:info:lf15c_beta241006.zip |}} | [[https://www.hpmuseum.org/forum/thread-20046-post-192907.html#pid192907 | Bug fix and new runTime function ]] | | |
| | 08/10/24 | LF15C | beta241007 | {{ :public:calculator:info:lf15c_beta241007.zip |}} | [[https://www.hpmuseum.org/forum/thread-20046-post-192956.html#pid192956 | Bug Fixes ]] | | |
| | 10/10/24 | LF15C | beta241009 | {{ :public:calculator:info:lf15c_beta241009.zip |}} | [[https://www.hpmuseum.org/forum/thread-20046-post-193093.html#pid193093 | Bug Fixes ]] | | |
| | 12/10/24 | LF15C | beta241011 | {{ :public:calculator:info:lf15c_beta241011.zip |}} | [[https://www.hpmuseum.org/forum/thread-20046-post-193245.html#pid193245 | RND bug fix ]]| | |
| | 14/10/24 | LF15C | beta241014 | {{ :public:calculator:info:lf15c_beta241014.zip |}} | | | |
| | 20/10/24 | LF15C | beta241020 | {{ :public:calculator:info:lf15c_beta241020.zip |}} | | | |
| | 21/10/24 | LF15C | beta241021 | {{ :public:calculator:info:lf15c_beta241021.zip |}} | | | |
| | 22/10/24 | LF15C | beta241022 | {{ :public:calculator:info:lf15c_beta241022.zip |}} | | | |
| | 24/10/24 | LF15C | beta241024 | {{ :public:calculator:info:lf15c_beta241024.zip |}} | | | |
| | 31/10/24 | LF15C | beta241031 | {{ :public:calculator:info:lf15c_beta241031.zip |}} | | | |
| | 02/11/24 | LF15C | beta241102 | {{ :public:calculator:info:lf15c_beta241102.zip |}} | | | |
| | 10/12/24 | LF15C | beta241210_2 | {{ :public:calculator:info:lf15c_beta241210_2.zip |}} | [[https://www.hpmuseum.org/forum/thread-20046-post-196923.html#pid196923 |Integrate feature]] | | |
| | 17/12/24 | LF15C | beta241217 | {{ :public:calculator:info:lf15c_beta241217.zip |}} | [[https://www.hpmuseum.org/forum/thread-20046-post-197261.html#pid197261 | Integrate improvements ]]| | |
| | 21/12/24 | LF15C | beta241221 | {{ :public:calculator:info:lf15c_beta241221.zip |}} | [[https://www.hpmuseum.org/forum/thread-20046-post-197462.html#pid197462 | Bug Fixes ]]| | |
| | 22/12/24 | LF15C | beta241222 | {{ :public:calculator:info:lf15c_beta241222.zip |}} | [[https://www.hpmuseum.org/forum/thread-20046-post-197516.html#pid197516 | Sin(180)=0 Fixed ]] | | |
| | 14/02/25 | LF15C | beta250123 | {{ :public:calculator:info:lf15c_beta250123.zip |}} |[[https://www.hpmuseum.org/forum/thread-20046-post-198747.html#pid198747| Enter Key bug fixes ]] | | |
| | 15/02/25 | LF15C | beta250215 | {{ :public:calculator:info:lf15c_beta250215.zip |}} |[[https://www.hpmuseum.org/forum/thread-20046-post-199820.html#pid199820 | Better integration routine and bug fixes]] | | |
| | 16/02/25 | LF15C | beta250216 | {{ :public:calculator:info:lf15c_beta250216.zip |}} | Y↑X and TEST [[https://www.hpmuseum.org/forum/thread-20046-post-199841.html#pid199841 | bug fixes]] | | |
| | 17/02/25 | LF15C | beta250217b | {{ :public:calculator:info:lf15c_beta250217b.zip |}} | Integration [[https://www.hpmuseum.org/forum/thread-20046-post-199875.html#pid199875 | bug fix ]]| | |
| | 19/02/25 | LF15C | beta250218 | {{ :public:calculator:info:lf15c_beta250218.zip |}} | Integration [[https://www.hpmuseum.org/forum/thread-20046-post-199946.html#pid199946 | programability ]]| | |
| | 20/02/25 | LF15C | beta250220 | {{ :public:calculator:info:lf15c_beta250220.zip |}} | [[https://www.hpmuseum.org/forum/thread-20046-post-200014.html#pid200014 | Linear Regression bug fix ]] | | |
| | 21/02/25 | LF15C | beta250221 | {{ :public:calculator:info:lf15c_beta250221.zip |}} | [[https://www.hpmuseum.org/forum/thread-20046-post-200051.html#pid200051 | Complex/non-integer factorial ]] | | |
| | 25/02/25 | LF15C | beta250225 | {{ :public:calculator:info:lf15c_beta250225.zip |}} | [[https://www.hpmuseum.org/forum/thread-20046-post-200298.html#pid200298 | improved precision in x! function ]] | | |
| | 26/02/25 | LF15C | beta250226 | {{ :public:calculator:info:lf15c_beta250226.hex |}} | [[https://www.hpmuseum.org/forum/thread-20046-post-200326.html#pid200326 | f-PREFIX bug fix ]] | | |
| | 12/01/26 | LF15C | 250408 | {{ :public:calculator:info:lf15c_250408.hex |}} | no longer BETA. Stable version - mature?? | | |
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| ++++ | |
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| === LF15C General Info === | |
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| The firmware behaves mostly like a normal HP15C with a few differences: | |
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| * Press <key>'f'</key> <key>'I'</key> in normal mode to create **& destroy** a complex number from<=>to ''y'' (real) and ''x'' (imaginary) | |
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| * <key>3</key><key>ENTER</key><key>4</key> | |
| * ''Y: 3.000'' | |
| * ''X: 4.000'' | |
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| * <key>'f'</key><key>'I'</key> creates | |
| * ''X: 3.000 4.000i'' | |
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| * Press <key>'f'</key> <key>(i)</key> to change ''x'' to its complex conjugate | |
| * ''X: 3.000 -4.000i'' | |
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| * Press <key>'f'</key><key>Re<>Im</key> to switch Real and Imaginary parts of complex number in ''x'' | |
| * ''X: -4.000 3.000i'' | |
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| * Press <key>'f'</key> <key>'I'</key> will destroy the complex number back to ''y'' (real) and ''x'' (imaginary) | |
| * ''Y: -4.000'' | |
| * ''X: 3.000'' | |
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| * FIX/SCI/ENG don't round numbers unless <key>'g'</key><key>RND</key> is pressed. Section 5 (page 59) of the manual suggests that the precision set with SCI sets how the number is rounded during operation | |
| * <key>'f'</key><key>ENG</key>''nn'' sets the number of significant digits as requested, **UNLIKE** the original HP15C where <key>'f'</key><key>ENG</key>''n'' sets the significant digits to ''n + 1'' | |
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| * To run a program other than A-E press <key>'f'</key> <key>LBL</key> ''##'' which is different than on the original HP15C where to run a label you used <key>GSB</key>''##'' | |
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| * Long press <key>STO</key> to dump program memory to serial. Long press <key>RCL</key> to put the calculator in listen mode, where numbers received on the serial interface are written to program memory. The speed of the serial port is 57600 baud. | |
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| * In program mode, <key>'f'</key> <key>CLEAR PREFIX</key> places the ''runTime'' opCode in the program. ''runTime'' writes to ''x'' the program execution time once it's executed. | |
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| * Indirect addressing the labels A to E is done with I = 100 to 104. | |
| * There are 10 user flags, from 0 to 9. | |
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| * Long press <key>GTO</key> in program mode to access go to label feature (single press in run mode) | |
| * Long press <key>GSB</key> in program mode to access go to line feature (single press in run mode) | |
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| * <key>'f'</key> <key>→R</key> and <key>'g'</key><key>→P</key> apply on complex numbers - **NOT** between ''x'' and ''y'' stack levels. | |
| * ''R'' and ''P'' are //mode switching// commands. When in ''P''olar mode **ALL** Complex numbers on the stack are in Magnitude/Angle format and normal arithmetic can be done in this mode. | |
| * this is unlike the HP15C, where complex arithmetic has to be done in ''R''ectangular mode - and ''P''olar format numbers must be converted -> ''R'' first. | |
| * To confirm the mode in use an annunciator is always present ''R'' or ''P'' | |
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| * It’s possible to delete a single program with <key>'f'</key> <key>CLEAR PRGM</key> followed by a label | |
| * <key>'f'</key> and a long press on <key>CLEAR PRGM</key> deletes the entire program memory | |
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| * <key>'f'</key> <key>USER</key> and <key>'g'</key><key> MEM</key> are not implemented and don't do anything at the moment. | |
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| * When running a program step by step, a long press on <key>SST</key> doesn’t execute the current step. | |
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| * ''SOLVE'' and ''Integrate'' work in similar ways to stock HP-15C | |
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| === LF15C Serial Port Info === | |
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| * Serial Port dump info : [[https://www.hpmuseum.org/forum/thread-20046-post-194697.html#pid194697]] | |
| * Serial Port settings | |
| * Rate : 57600 | |
| * Data : 8 bit | |
| * Stop : 1 bit | |
| * Parity : None | |
| * Flow Control : None | |
| * To extract a dump from calculator press and hold <key>STO</key> | |
| * the non-zero digits can be copy/pasted into a text file for storage | |
| * To upload a previously saved dump | |
| * copy it to clipboard and then | |
| * press and hold <key>RCL</key> until the terminal shows ''Paste PrgMemory:'' | |
| * in Putty <key>Shift</key><key>Insert</key> to paste clipboard text into terminal | |
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| * RTC appears to continue running even when switching firmware | * RTC appears to continue running even when switching firmware |
| * LF15C has no ability to display RTC but it the rate appears unaffected by the firmware changes | * LF15C has no ability to display RTC but it the rate appears unaffected by the firmware changes |
| | * Requires that Swiss Micros firmware is loaded in order to check current RTC time |
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| ==== Update January 2026 ==== | ==== Update January 2026 ==== |
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| | Using my [[..:..:miscellany:watches:watchcheck|python Watchcheck]] |
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| ^Date Start^Date Check^Delta^Latest Rate Error^Average Rate Error^Comments^ | ^Date Start^Date Check^Delta^Latest Rate Error^Average Rate Error^Comments^ |
| |23/01/26| 24/01/26| -47.0 |+2.1 | +2.1 | After 24 hours | | |23/01/26| 24/01/26| -47.0 |+2.1 | +2.1 | After 24 hours | |
| |23/01/26| 26/01/26 | -43.4 | +1.9 | +2.0 | After 3 days | | |23/01/26| 26/01/26 | -43.4 | +1.9 | +2.0 | After 3 days | |
| |23/01/26| 27/01/26 | -41.9 | +1.8 | +1.9 | After 4 days | | |23/01/26| 27/01/26 | -41.9 | +1.8 | +1.9 | After 4 days. LF15C loaded after time check | |
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