littlecharlie
Quiz Detective
- Joined
- Jan 10, 2018
- Posts
- 83
Hi, my mv1a is not saving hiscores or unibios options.
I have encountered this problem before in other boards and was able to solve it either fixing a broken trace or replacing a component.
But this time I think I have covered everything and still not working.
I've done the basics, like erasing the backup ram in the bios, and checking that the BRAMs get above 3V all the time.
I've replaced both upper and lower BRAMs with new RAMs chips, and the 74HC32 beside them as well, which sometimes is the culprit.
I've checked all traces and they all seem good. I've checked the connections between both BRAMs and the BIOS(SP1) and the 68k. All fine.
Any ideas?
I have encountered this problem before in other boards and was able to solve it either fixing a broken trace or replacing a component.
But this time I think I have covered everything and still not working.
I've done the basics, like erasing the backup ram in the bios, and checking that the BRAMs get above 3V all the time.
I've replaced both upper and lower BRAMs with new RAMs chips, and the 74HC32 beside them as well, which sometimes is the culprit.
I've checked all traces and they all seem good. I've checked the connections between both BRAMs and the BIOS(SP1) and the 68k. All fine.
Any ideas?