VSNCHART.EXE lists and plots chart files from VSNet, Kyoto University, Japan.
VGA and MSDOS5 (or later) are required. It can be installed under a Windows icon.
VSNCHART.ZIP contains 3 files;- INFO-VSN.TXT + VSNCHART.EXE + VSNALPH.BIN
or download them separately;
Sample chart: SN1998SProgram operation is largely self-evident with single key presses listed on screen.
Faint magnitude limiting
Examples of re-lettered charts;-
The program was originally compiled in November 1995 from MS QuickBasic4.5.
A revised version was written in May 1998.
Here is the source code listing.