watchdog

There is a way to disable mvs watchdog to diagnose problem with neodiag?

Hi. The way to disable watchdog is to fix whatever is causing the system to be stuck in watchdog.

I would start by checking the connections to the bios chip, but I'm sure the pros on these forums have some other ideas about what to check next.

Google the bios pinout and check connection between CPU>BIOS>WRAM.

Xian Xi said:

Google the bios pinout and check connection between CPU>BIOS>WRAM.

Click to expand...

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

I have some bad behaviour in my mind but it could be also a stupidity: "is it possible that multigame cartridge has fried this board audio?"

EDIT:
The actual error is
z80 dead / errored /communication issue
expected: 03
actual: D3

it is the audio ram

Edit: can i use the tms27x0010a or the 27C1000A to flash sm1.rom?
Edit: system audio yesterday worked for a while with crappy audio on the infamous pop'n bounce bootleg cart i have.

can anyone have asd ae29f2008-12 pinout? i would like to use it for flash sm1 and swap the toshiba sm1 rom on the fz board but i am not sure if it is pin compatible.