I just tried. The results are... promising.
[attach=1]
You'll need
the latest Dosbox-X release.
Copy the
dosbox.reference.conf as
dosbox.conf.
Edit
dosbox.conf, find the line that says
machine=(something) and change it to
machine=pc98.
Run Dosbox-X, and in the DOS prompt, type:
imgmount d path_and_name_of_your_image_file.hdi
d:
autoexec
Then tweak the cycles with Ctrl-F11 and Ctrl+F12 until the game runs smoothly (around 30k cycles should work).
This is cutting edge stuff (the developer got Touhou to run 2 months ago) so expect bugs. 東方靈異伝 ~ The Highly Responsive to Prayers has a bunch of red garbage squares on screen for example.