05-06-2022, 10:41 AM
Hi Witchy,
RESET, if this is LOW or rather not high it will hold your system in RESET and not fire up.
Once out of RESET the CPU will go through all the addresses from 0000h all the way up to 8000h where IC22 will output on pin 11 a Low ROMSEL to select your ROM BASIC.
Check C21 if leaky will hold the system in reset.
Ernest
RESET, if this is LOW or rather not high it will hold your system in RESET and not fire up.
Once out of RESET the CPU will go through all the addresses from 0000h all the way up to 8000h where IC22 will output on pin 11 a Low ROMSEL to select your ROM BASIC.
Check C21 if leaky will hold the system in reset.
Ernest