Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Controller locks up on some boards. #8

Open
MJoergen opened this issue May 21, 2024 · 2 comments
Open

Controller locks up on some boards. #8

MJoergen opened this issue May 21, 2024 · 2 comments
Assignees
@MJoergen

Comments

@MJoergen
Copy link
Owner

This is observed when connecting a PicoLemon HyperRAM module to the PMODs of a QMTech Wukong board.

I suspect the problem is due to the increased latency through the board traces and PMODs.
@MJoergen MJoergen self-assigned this May 21, 2024
MJoergen added a commit that referenced this issue May 22, 2024
@MJoergen
Sample RWDS a clock cycle later
c0670f7 
This should hopefully fix issue #8
@AnttiLukats
Copy link

There is no significant routing latency, that is not the problem for sure.

MJoergen added a commit that referenced this issue Jun 26, 2024
@MJoergen
Insert BUFR into RWDS path
7068c29 
This should fix issue #8
@AnttiLukats
Copy link

The lock up is for sure the same issue as with mega65 R6, there is a BUG in hyperram_rx.vhd code, the code as is would lock up at first time when FIFO is empty! This is a real bug that is easy to fix.

MJoergen added a commit that referenced this issue Jul 11, 2024
@MJoergen
Copy files from C64 repo
f839818 
This fixes a lockup seen on the MEGA65, and could be related to issue #8
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees

@MJoergen MJoergen

Labels
None yet
Projects
None yet
Milestone
No milestone
Development

No branches or pull requests
2 participants
@AnttiLukats @MJoergen