May be you can start by displaying the first alpha "A" in your table like this.
I program the 2732 using my 8051 assembler to generate a BIN file.
If the EPROM is not allowed, you might think of a way using address decoders and diodes to form the data for the characters thus replacing the eprom.
But this type of job is best done using a mcu...
View attachment 137100
Thanks for your advice and for the circuit sir..