wuchy143
Member
Hello,
I am trying to figure out why a single board computer isn't booting. I am a noob when it comes to processor boards so, here we go. I haven't mentioned much about the actual board because this is more of a general processor board question. Well, I think it is
Just looking to see if I am way off. If i may be on to something please say.
The bootrom(PC28F640J3D-75) output enable pin is being strobed by the processor bridge indefinitely. I had my scope probe on it for 5 minutes and it doesn't stop. I am thinking that the board is getting reset every time it tries to load the boot rom data because it must fail the load and then it resets itself to try again. I'm thinking this is what happens but not sure. I am going to add some fly wires to it to see if the address and data are actually toggling. Plus I can check the resets of the CPU to verify it is indeed resetting itself.
What do you guys think?
I am trying to figure out why a single board computer isn't booting. I am a noob when it comes to processor boards so, here we go. I haven't mentioned much about the actual board because this is more of a general processor board question. Well, I think it is
The bootrom(PC28F640J3D-75) output enable pin is being strobed by the processor bridge indefinitely. I had my scope probe on it for 5 minutes and it doesn't stop. I am thinking that the board is getting reset every time it tries to load the boot rom data because it must fail the load and then it resets itself to try again. I'm thinking this is what happens but not sure. I am going to add some fly wires to it to see if the address and data are actually toggling. Plus I can check the resets of the CPU to verify it is indeed resetting itself.
What do you guys think?