Math LEX 2A release notes
The version 2A is an enhanced Math LEX for the HP-71B.
The release 2A includes the following functional enhancements:
- support of complex arguments in ASIN/ACOS/ATAN , ASINH/ACOSH/ATANH , LGT,
and for the alternate keyword names ASN/ACS/ATN/LOG10,
- addition of the COT, CSC and SEC functions,
- enhancement of the complex square operation z^2, now computed as z*z, for better accuracy,
- the VER$ response is "MATH:2A"
Content:
math2a.l71 : Math 2A Lex with LIF header for download to a HP71
math2a.bin : binary image of the Math 2A ROM, ready for Emu71
Note: the Math Lex is designed to run in Eprom modules or in independent IRAM. Unexpected results can occur if the Math Lex is run in MAIN memory.
How to load the Math Rom into Emu71:
---------------------------------------
For Emu71/DOS, just add the line:
3 ROM 32 math2a.bin
in the [modules] section of the emu71.ini file.
For Emu71/Win, use the port configuration to add a new 32K ROM port with the math2a.bin file.
How to load Math Lex into a HP-71:
-------------------------------------------
The Math Lex needs an independant 32k (or more) RAM port.
- You need a PIL-Box and the ILPer software.
- Connect the HP-71 to the PIL-Box, and start ILPer
- Set the DOSLink in file to math2a.l71
do on HP-71:
FREE PORT(x) ! x is the port number where your 32k module is
COPY :DOSLINK TO :PORT(x)
For additional information on the Math ROM, please visit:
http://www.jeffcalc.hp41.eu/emu71/mathrom.html
J-F Garnier, February 2020.