Dear Phantom
Hi..
I am not sure. but I could find 'iyagi50.exe' at postech.
Try, ftp hwarang.postech.ac.kr
and change directory 'cd /pub/msdos/emulator/ '.
Or try, ftp kum.kaist.ac.kr
and change directory 'cd /pub/pc/hangul/ '.
You will find 'i53_1.exe', 'i53_2.exe',....'i53_4.exe'.
I hope that these are what you wanted..
Good luck..
hyun.