Intermittent lockup occurs on YS 2 HDD v1.03

[egellon]

There is an issue where the entire system intermittently freezes when entering or exiting the temple.
Please refer to the video below.

YS2HDD.lockup.mp4

For reference,
When this problem occurs, I tried debugging,
It has been confirmed that an infinite loop occurs in 0xA46C~0xA470.

Perhaps, in my opinion, there is a condition where the interrupt is not received while waiting for the HDD I/O. Or maybe it's a timing issue...

thank you.