IMHO porting code from SED 1335 Controller to KS0108 is not a simple job.
The first is AKA "intelligent controller" like T6963, the second is a lower cost
controller (like SED1520) without character generator ROM and with
some paging access to screen(s).
You have to get some fonts and write low level routines to handle screen.
Study and use assembler routines produced by FastAvr for instance,
it's a good start point !