wrongdon
New member
I'm just kind of thinking out loud again,but feel free to chime in.I am working on a midway clowns pcb.Game would just boot to a pattern scrolling up and down the screen,so i booted it in test mode and it did the same pattern for a few seconds and then said H.I figured rom H,so i pulled and reseated,no change.Figured i would burn a new one,except they are masked roms and the board calls for 2708's.So i found this page here
http://www.marvin3m.com/video/seawolf.htm
And proceeded to strap the board for 2716's.So I used copy /b and combined H+G , F+E and D+C and burned 3 2716's,this just gave me the same pattern in test and game mode and i didn't get the H.Ok that may not have been the right thing to do,so i burned the roms individually on 6 2716's.Just lines on the screen and coining it up just changes the pattern slightly.
Currently roms are erasing ,tomorrow is another day.
After strapping pin 21 goes to +5 so they should read.
Now i am wondering If maybe i grouped the roms wrong or if i need to do something different with them before i burn them individually.I am just guessing that there should be some sort of message after it passes ram/rom test.
This should keep me out of trouble for a while.
http://www.marvin3m.com/video/seawolf.htm
And proceeded to strap the board for 2716's.So I used copy /b and combined H+G , F+E and D+C and burned 3 2716's,this just gave me the same pattern in test and game mode and i didn't get the H.Ok that may not have been the right thing to do,so i burned the roms individually on 6 2716's.Just lines on the screen and coining it up just changes the pattern slightly.
Currently roms are erasing ,tomorrow is another day.
After strapping pin 21 goes to +5 so they should read.
Now i am wondering If maybe i grouped the roms wrong or if i need to do something different with them before i burn them individually.I am just guessing that there should be some sort of message after it passes ram/rom test.
This should keep me out of trouble for a while.


