OpenCores
Issue List
INT_ACK #2
Closed IPC_123 opened this issue over 6 years ago
IPC_123 commented over 6 years ago

Have been unable to make interrupt acknowledge work.

interrupt mode 2 set.

monitoring IORQ and M1 not happening at the same time.

IPC_123 commented over 6 years ago

It is possible that the interrupt mechanism is not being enabled

gdevic commented over 6 years ago

Do you have a failing sequence of signals / events / code to reproduce the issue? Thanks

IPC_123 commented over 6 years ago

I have installed your z80 cpu on a DE0 nano. It works fine and I am very impressed with it, I have been experimenting with interrupts and have found that the NMI works fine, But when I try the other interrupts the Interrupt acknoledge response M1 and IORQ both going low together doesn't happen.

IPC_123 commented over 6 years ago

Goran, Please accept my apologies, I have been doing further work and found that some how one or more of the a-z80 files was corrupted. I downloaded another copy and used that and everything now works OK.

gdevic closed this almost 6 years ago

Assignee
No one
Labels
Bug