HP Navigation Pac ROM >>RawFile DM42
Posted: Sun Feb 25, 2018 1:44 pm
Hi Sailors
The Navigation Pac ROM for the HP-41 is apparently rare.
On ebay you find the HP41c Navigation Pac for a Buy it now price off 185 US dollar
With a lot of help from Thomas Okken, the Nav ROM is converted to a HP42S Raw file.
All the program's have run on the DM42 with no problem.
When it’s work with the HP Printer 82240B sometimes the calulator freeze during printing of a long list of waypoints on a great cirkel track
I believe that the Nav Pac might offer some helpful code and ideas.
The Nav pac manual is big to put in the zipfile , but its not to hard find on the internet.
SIZE 054 is sufficient for the programs.
The program GCPLOT works very well when the longitudinal separation is less than or equal to 90 deg. For longitudinal separation greater than then 90 deg, the program GCPLAN should be used to generate intermediate points less than 90 deg apart.
Then GCPLOT can be used for intervals between the intermediate points. GCPLOT will not work completely on intervals greater dan 90 deg.
Happy Sailing,
Rupert van Swol
Here's the table of Contents:
Course planning programs are :
Great-circle course and distance [XEQ] "GC"
Great- circle position [XEQ]"GCPOS"
Rhumb-line course and distance [XEQ] "RL"
Rhumb-line positions. [XEQ]"RLPOS"
Great-circle plotting and Voyage planning .[XEQ]"GCPLOT" or [XEQ]"GCPLAN"
Dead Reckoning.[XEQ] "DR"
Longitude to Latitude,
This calculates the latitude at which a specified longitude is reached on a great circle defined by two points. [XEQ]"LOTOL"
Celestial navigation programs
Reducing celestial sights is simplified to keying in date, time, sextant height, and the name of the object sighted.
Permissible objects, include 57 navigational stars, Polris, the sun, the Moon, Venus, Mars, Jupiter and Saturn.
Provision is made for substituting nautical almanac values for the computer almanac. After reducing a sight , you can use one of the course-planning programs to update your dead reckoning position.
programs :
Sight reduction and [XEQ]"SIGHT"
Perpetual Almanac- Stars, Sun, Planets, Moon [XEQ]"BODY"
Almanac interpolator [XEQ]"SIGHT"
Calendar functions [XEQ]"D+T" [XEQ]"JD"
Greenwich sidereal Time [XEQ]"GST"
Star Almanac [XEQ]"STAR"
Astronomical coordinate conversion
Equatorial spherical to equatorial rectangular coordinates [XEQ]"LBRYZX"
Ecliptic spherical to equatorial rectangular[XEQ]"LBRYZX"
equatorial rectangular to equatorial spherical coordinates [XEQ]"ZYXdHA"
The Navigation Pac ROM for the HP-41 is apparently rare.
On ebay you find the HP41c Navigation Pac for a Buy it now price off 185 US dollar
With a lot of help from Thomas Okken, the Nav ROM is converted to a HP42S Raw file.
All the program's have run on the DM42 with no problem.
When it’s work with the HP Printer 82240B sometimes the calulator freeze during printing of a long list of waypoints on a great cirkel track
I believe that the Nav Pac might offer some helpful code and ideas.
The Nav pac manual is big to put in the zipfile , but its not to hard find on the internet.
SIZE 054 is sufficient for the programs.
The program GCPLOT works very well when the longitudinal separation is less than or equal to 90 deg. For longitudinal separation greater than then 90 deg, the program GCPLAN should be used to generate intermediate points less than 90 deg apart.
Then GCPLOT can be used for intervals between the intermediate points. GCPLOT will not work completely on intervals greater dan 90 deg.
Happy Sailing,
Rupert van Swol
Here's the table of Contents:
Course planning programs are :
Great-circle course and distance [XEQ] "GC"
Great- circle position [XEQ]"GCPOS"
Rhumb-line course and distance [XEQ] "RL"
Rhumb-line positions. [XEQ]"RLPOS"
Great-circle plotting and Voyage planning .[XEQ]"GCPLOT" or [XEQ]"GCPLAN"
Dead Reckoning.[XEQ] "DR"
Longitude to Latitude,
This calculates the latitude at which a specified longitude is reached on a great circle defined by two points. [XEQ]"LOTOL"
Celestial navigation programs
Reducing celestial sights is simplified to keying in date, time, sextant height, and the name of the object sighted.
Permissible objects, include 57 navigational stars, Polris, the sun, the Moon, Venus, Mars, Jupiter and Saturn.
Provision is made for substituting nautical almanac values for the computer almanac. After reducing a sight , you can use one of the course-planning programs to update your dead reckoning position.
programs :
Sight reduction and [XEQ]"SIGHT"
Perpetual Almanac- Stars, Sun, Planets, Moon [XEQ]"BODY"
Almanac interpolator [XEQ]"SIGHT"
Calendar functions [XEQ]"D+T" [XEQ]"JD"
Greenwich sidereal Time [XEQ]"GST"
Star Almanac [XEQ]"STAR"
Astronomical coordinate conversion
Equatorial spherical to equatorial rectangular coordinates [XEQ]"LBRYZX"
Ecliptic spherical to equatorial rectangular[XEQ]"LBRYZX"
equatorial rectangular to equatorial spherical coordinates [XEQ]"ZYXdHA"