IDE interface scheme
Note: Instead 74LS03 you may use any OC
inverter. Instead 74HCT245 -74LS245 will be OK.
Interface will work even without this two bus driver (then connect D0-D15 directly), what is recommended with short IDE cable.
Lines CE1 & CE2 are for optional TOS 2.06 ROM chips, in ST machines. This is for solution with 4 pieces of 27512 EPROMs.
Of course all capacitors are ceramic, and must
be soldered shortest possible.
+5V on pin 20 is standard now for supply power to CF and IDE-Flash disks - it simplifies connection.
GAL listing JEDEC