Arduino In-Circuit Tester: Build Project
- Thread starter Judder
- Start date
been lurking here for ages,
would it be an interesting idea to port this to the ST nucleo boards?
they have arduino headers and partial arduino ide support,
but they can run upto 400MHz and have no shortage of ram or flash.
the only difference is the headers, where the MEGA has the double row of pins at the end, the nucleo uses the sides of the board for extra i/o
so a different interface pcb would be needed.
that and it's 3.3v, but 5v tolerant, so it's fine pulling stuff low, but *may* need some pullup resistors.
although it shouldnt because ttl is supposed to consider anything over about 2v as "high"
would it be an interesting idea to port this to the ST nucleo boards?
they have arduino headers and partial arduino ide support,
but they can run upto 400MHz and have no shortage of ram or flash.
the only difference is the headers, where the MEGA has the double row of pins at the end, the nucleo uses the sides of the board for extra i/o
so a different interface pcb would be needed.
that and it's 3.3v, but 5v tolerant, so it's fine pulling stuff low, but *may* need some pullup resistors.
although it shouldnt because ttl is supposed to consider anything over about 2v as "high"
Nes4life said:
If you go here:
http://www.arcaderestoration.com/BrowseGames.aspx
I have all the games from MAME there including Memory Maps, ROM Identification, etc...
Can't guarantee it's 100% accurate, as it was parsed from MAME source, but it should be in 99% of the cases.
It could easily be exported into what ever format you need.
Was looking for Paul's site myself thanks. I've gotten a run of boards made. I had 10 of each made. Smallest order they would run, so I've got 8 spares of each if anyone wants some, just message me. I'm in the states, so whatever shipping is plus a couple bucks to help cover the costs would be fine. You guys seem to have done a lot of work providing all this, just want to say thanks.
I'm having trouble implementing the defender code. Can I save all the libraries and game files in one directory or do I have to create separate library folders? I was able to run Paul's files but when I try to save the defender files it asks to overwrite files and I'm wondering if there are differences I needed to account for. Also there was some comments on the limited file space on the Arduino.... How about using a touch screen with an SD card? Outside my skill level but maybe an idea?
FarmerCal said:
Try my branch for Atom - has it all integrated
https://github.com/Judder/arduino-mega-ict-atom
I've added basic support to the ICT for the main CPU of:
- Punch-Out
- Super Punch-Out
- Arm Wrestling
Files are here:
https://github.com/Phillrb/Arduino-ICT-PVAP
This is currently untested.
- Punch-Out
- Super Punch-Out
- Arm Wrestling
Files are here:
https://github.com/Phillrb/Arduino-ICT-PVAP
This is currently untested.
Hi! I'm a bit late to the party... but with a stack of PCBs that need attention, and Fluke 9100As being made of unobtanium, it was time to put together one of these testers.
I'm seriously impressed by how much can be done with a humble Arduino board and a few connectors. Paul did a fantastic job setting up the software with extensibility in mind. I've been working on additional game support, primarily:
This enabled me to quickly find a bad RAM chip on an Asteroids Deluxe board that had been puzzling me for a long time. I found numerous bad RAM chips and flakey ROM sockets across multiple Battlezone boards, though most still aren't working.
I'm currently working on a few experimental tests for Battlezone:
I'm having trouble getting the math box and VSM tests to work reliably. I think it's because they use 3 and 12 MHz clocks that are normally synchronous with the CPU clock. The ICT is slower and asynchronous, so it can't send a short enough write pulse at exactly the right time. Maybe I'd have better luck using the ICT's master clock mode, which I haven't tried yet.
What's the best way to share these changes? I'll definitely do a pull request to Nes4life for the Asteroids Deluxe stuff, but does Paul still maintain his repo? Or is Judder's Atom-based fork the place to be these days?
Big thanks to everyone who has contributed their time and knowledge to this project. I was hitting a wall on repairs, and this has been a huge help for breaking through it.
I'm seriously impressed by how much can be done with a humble Arduino board and a few connectors. Paul did a fantastic job setting up the software with extensibility in mind. I've been working on additional game support, primarily:
- Improvements to Nes4life's Asteroids Deluxe support (I updated checksums and chip locations, and added I/O mapping differences from Asteroids)
- Support for Battlezone, with provisions for adding Red Baron later on.
This enabled me to quickly find a bad RAM chip on an Asteroids Deluxe board that had been puzzling me for a long time. I found numerous bad RAM chips and flakey ROM sockets across multiple Battlezone boards, though most still aren't working.
I'm currently working on a few experimental tests for Battlezone:
- POKEY (generate simple tones, read switches on the pot inputs, and check for changing values from the random number generator)
- Math box (send the same commands as the ROM self test, check for STOP signal when commands finish, and verify expected values in the output registers)
- Vector state machine (load vector RAM with the same bytes as the ROM self-test, send a "GO" signal to the VSM, and check for HALT signal when it finishes; should also be able to see the test pattern on a scope or monitor)
I'm having trouble getting the math box and VSM tests to work reliably. I think it's because they use 3 and 12 MHz clocks that are normally synchronous with the CPU clock. The ICT is slower and asynchronous, so it can't send a short enough write pulse at exactly the right time. Maybe I'd have better luck using the ICT's master clock mode, which I haven't tried yet.
What's the best way to share these changes? I'll definitely do a pull request to Nes4life for the Asteroids Deluxe stuff, but does Paul still maintain his repo? Or is Judder's Atom-based fork the place to be these days?
Big thanks to everyone who has contributed their time and knowledge to this project. I was hitting a wall on repairs, and this has been a huge help for breaking through it.
Hey Wondras, if you do a pull with all your changes as well as your new games I'll add them all to my repo with your name etc in the readme. Be sure to extend the copyright to include your name / handle. Paul doesn't add games to his repo unless he's seen it work on his own hardware. I could even give you further privileges to make changes when you want.
Thanks for the improvements!!
I really want a mode added to the ICT so I can arbitrarily choose to write a specific data byte to any address or read the contents of any address (and loop either action). Would be great for debugging and have more fluke-like powers!Nes4life2019-05-27 21:03:41
Thanks for the improvements!!
I really want a mode added to the ICT so I can arbitrarily choose to write a specific data byte to any address or read the contents of any address (and loop either action). Would be great for debugging and have more fluke-like powers!Nes4life2019-05-27 21:03:41
Nes4life said:
Cool, I will do that! I need to strip out some of the experimental stuff first, or at least make it a separate commits/requests.
Nes4life said:
As a start in that direction, I added rudimentary console access. I also needed it because my Mega2560 arrived much sooner than the LCD panel.
