A very credible challenge - I commend you...
I don't know the answer. However, I hope I can point you in the right direction.
Goto the Altera's "
download center (
https://www.altera.com/downloads/download-center.html)". Towards the bottom of the page are all the old versions of Quartus you can still download - right back to Version 3.0. From memory, this release is earlier than you're looking for.
Unfortunately, selecting each of the earlier releases doesn't automatically identify which devices it supports. However, under each version you can read the release notes. These do state which devices and operating system are supported.
For that board you're also looking for a version of Quartus that supports the ByteBlaster II programming cable. Refer to the "
byteblaster ii download cable user guide (
https://www.altera.com/content/dam/altera-www/global/en_us/pdfs/literature/ug/ug_bbii.pdf?)". The PLDT-2 board, almost certainly (I can't find a schematic), replicates the circuitry in the ByteBlaster II cable allowing you to connect to it using a standard parallel port cable.
Use the newest release of Quartus that supports your device and the ByteBlaster II cable.
Good luck!
Cheers,
Alex