DOSTIPS.COM does not work on XP

[Jer]

DOSTIPS works fine on my old Pentium 4 PC with Windows XP Home SP3.
Firefox 47.0.1 had no font issues when viewing DOSTIPS.
After an upgrade to Firefox 52.5.2 ESR, viewing is still good.
All fonts are clear.

The desktop PC is dual-bootable, has 2 harddisks, one with Windows 7
and the other Windows XP. I keep it in case of incompatabilities
with the laptop (Win 7) and new destop (Win 10) and older software I may want
to use.