Google the bios pinout and check connection between CPU>BIOS>WRAM.
Good morning, what if i will remove the bios from socket and put bios masta on the 68000? if i want to do a rapid bios related test? i tested d0-d15 and it worked, i have no connection between 68k pin38 and 74ls259 pin13.
68k pin 32,33,34 where are they headed?
Found, they are headed to pin 1,2 and 3 of the 74ls259 chip
System exited from watchdog, the next error is:
z80 dead / errored /communication issue
expected: 03
actual: 01
Solved! I have also changed the z80 but the iusse was a broken trace betwen z80 and ym2610.
No audio, SMI unresponsive