I am having trouble time writing the EPROM chip, like the datasheet told me to have 12-13v connect to VPP while GVpp is on high, I add 8 more volts with button so 4.5 plus 8v is 12.5-13v(8-9v battery minus goes to ground, and plus goes to vpp). But the chip would not write. How do I get the chip to write?
Schematics: https://prnt.sc/j4iqqp (Math mistake, 0.2 ohm suppose to be 0.5 ohm)
I tied 4-5v to vcc. But I didn't tie any address to high nor low which should have a default address to 0000000000000000000.