HUEY - a 6502 assembly scientific calculator

HUEY is a complete, programmable, scientific calculator program for 6502-based microcomputers by Don Rindsberg, and it originally appeared in the Dec. 1977 issue of Kilobaud magazine. As can be guessed from the name, it has similar functionality and structure (four-level stack, RPN) to HP calculators of the time, especially the HP-25.
UPDATE (13.AUG.23): MASS-WERK informs me that it is no longer necessary to strip out a starting 4-digit hex address either by hand or with a spreadsheet program -- just copy-n-paste, and the MASS-WERK disassembler will do the rest, trimming out the non-2-digit-hex! :^)
*** The calculator in the thumbnail is not "Huey," but a Radio Shack EC-421, given to me as a Christmas gift in 1976. Still works. :^)
00:00 Intro
00:33 Finding HUEY
03:09 Source Code
05:58 Relocation
09:31 Patching for PAL-1
12:52 Create AHEX File
18:01 Load and Run
19:36 Testing HUEY/Features
25:06 Outro
RESOURCES
HUEY PROGRAM FOR 6502:
MAIN - www.crbond.com/...
PAL-1 - www.vanportmedi...
HANS OTTEN 6502 SITE:
retro.hansotten...
MASS-WERK:
www.masswerk.a...
CREDITS
LIGHT BULB
Image by Benoît DE HAAS from Pixabay
pixabay.com/il...
The Spartan Conditions here:
Camera: obsolete iPhone 5s
Microphone: castoff USB mic from a karaoke machine
Screen Recording: SimpleScreenRecorder for Linux (free)
Screen Capture: Screenshot (part of Linux Xubuntu)
Video Editing: kdenlive for Linux (free)
Audio Editing: Audacity for Linux (free)
In other words, if I can do it, so can you. :^)
Music: (c) & (p) 2022, David H. Hassler
Best regards.