Copyright 2023 Eric Smith spacewar@gmail.com
SPDX-License-Identifier: GPL-3.0-only
voyager-lcd development is hosted at the voyager-lcd Github repository.
The HP Voyasger series calculators (HP-10C, HP-11C, HP-12C, HP-15C, and HP-16C) were introduced in 1981 to 1982. They used an LCD display with ten seven-segment digits with right hand decimal and comma, and ten annunciators, for a total of 100 display segments. (A 101st segment, a battery low indicator, was present but not under firmware control.)
The display segments were individually controlled by 50 bits in each of two hardware registers. The mapping of bits to segments was based on the physical layout of the LCD, PCB wiring, and chip pinout. As a consequence, the mapping seems quite arbitrary. It is tedious to manually compose display bitmaps. This program presents an approximate graphical representation of the LCD. Segments can be toggled with a mouse clock, and the corresponding control register values are displayed in hexadecimal.
The program builds on Linux or Posix systems, and requires C++20 , Qt 6, Python 3, and SCons 4. It has been (only slightly) tested on Fedora 37 Linux with GCC 12.2.1, Qt 6.4.1, Python 3.11, and SCons 4.4.1.
To build:
scons
or, after building any other target (e.g., win32):
scons target=posix
The resulting executable will be build/posix/voyager-lcd.
The executable may be installed simply by copying it into any desired
directory.
Cross-compiling for Windows requires a mingw32 cross-compilation toolchain, cross-development Qt packages, and msitools. On Fedora 37, install the required packages by:
sudo dnf install mingw32-g++ mingw32-qt6-qtbase msitools
To build:
scons target=win32
The resuling MSI installation package will be build/win32/voyager-lcd.msi.
The voyager-lcd program is licensed under the Free Software Foundation
General Public License version 3. See LICENSE/gpl-3.0.txt for details.