How would I arrange the 3 EPROMs for the 3 BCD digit outputsYou can make your own using 8x32 PROMs; 8 bits would require 3 of them. If you were tempted to go that route, you should just program an EPROM with a 16 bit output. In the thread I referenced earlier, I programmed one to do 4 BCD digits.
I said 3 PROMs. If you programmed 7488 using the table from the 74185 datasheet, it would take three of them.How would I arrange the 3 EPROMs for the 3 BCD digit outputs
I've never used EPROMs or PROMs so I don't know how to do that, could this work instead or should I rather use the M27C4002I said 3 PROMs. If you programmed 7488 using the table from the 74185 datasheet, it would take three of them.
Form the Nat Semi datasheet:
View attachment 253197
I think it would be less work to program a 16 bit wide EPROM like M27C4002. If you do as I did and program it for 4 BCD digits, it can be used for other projects.
You could do it either way. If you have an EPROM programmer, I think wiring will be simpler due to the pinout of M27C4002.I've never used EPROMs or PROMs so I don't know how to do that, could this work instead or should I rather use the M27C4002