<-[[.:]] ====== DM15L Info ====== {{ :public:calculator:da15_3.jpg?direct&400 |}} {{ :public:calculator:dm15_2.jpg?direct&400 |}} {{ :public:calculator:dm15_1.jpg?direct&400 |}} {{ :public:calculator:2022-05-24_23.22.32.jpg?direct&400 |}} ===== Purchase Information ===== * Date : September 2021 * From : Swiss Micros (direct) * Price : £95 * Serial : 21350 * New Battery * July 27^th 2022 * July 26^th 2024 ===== Firmware ===== ==== Upgrade firmware on Linux ==== ''sudo lpc21isp /dev/ttyUSB0 115200 12000'' ==== Upgrade firware on Windows ==== === Serial USB Driver for Windows === {{ :public:calculator:info:cp210x_universal_windows_driver.zip |}} === Windows Firmware Upload Tool === {{ :public:calculator:voyage_firmware_tool.zip |}} ==== Swiss Micros Official ==== === Swiss Micros Firmware files === ^Date^Serial No.^Firmware^Version^Firmware Files^Comments^ |24/05/22 |21350 |DM15_M1B |32 |{{ :public:calculator:dm15_m1b_32.zip |}}| Extended User Registers| |22/11/23|21350|DM15|32| {{ :public:calculator:info:dm15_32.zip |}} | Standard User Registers | |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 | 34 | {{ :public:calculator:info:dm15_m1b_34.hex |}} | Bug fixes to new version | ^ROM ^ Allocatable registers ^ RAM base addr. ^ Initial Memory Status^ |DM15 (Original ROM)| 64 |0xc0| 19 46 0-0| |DM15_M80|128|0x80|19 110 0-0| |DM15_M1B|229|0x1b|19 211 0-0| ==== LF15C - 3rd Party Firmware ==== * From HP Forum [[https://www.hpmuseum.org/forum/thread-20046.html]] For more details see [[LF15C]] ===== RTC Error ===== * RTC is not capable of calibration/correction * 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 * Requires that Swiss Micros firmware is loaded in order to check current RTC time ==== Update January 2026 ==== Using my [[..:..:miscellany:watches:watchcheck|python Watchcheck]] ^Date Start^Date Check^Delta^Latest Rate Error^Average Rate Error^Comments^ |23/01/26| | -49.0 | | | Delta -49.0. New firmware DM15 V34 loaded. New Period | |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| 27/01/26 | -41.9 | +1.8 | +1.9 | After 4 days. LF15C loaded after time check | ===== Swiss Micros Info ===== * Firmware : [[https://technical.swissmicros.com/voyager/firmware/]] * Documentation : [[https://technical.swissmicros.com/voyager/doc/voyager_user_manual.html| Online HTML User Manual]] * Documentation : {{ :public:calculator:info:voyager_user_manual.pdf | PDF Manual}} * Product Page : [[https://www.swissmicros.com/product/dm15l|DM15L]] ===== HP-15C Owner's Handbooks ===== Download from [[https://literature.hpcalc.org/ ]] * HP-15C Owner's Handbook : [[https://literature.hpcalc.org/community/hp15c-oh-en.pdf]] * HP-15C Advanced Functions Handbook : [[https://literature.hpcalc.org/community/hp15c-afh-en.pdf]] ===== DM15L Memory Dumps and Program Listings===== * See [[public:calculator:progs:dm15l_progs|]] {{tag>calculator dm15l}}