kestep
New member
I have an Atari Dig Dug board sold to me as "working".
It boots up and plays fine, but there are some problems with the graphics.
At boot up, the crosshatch is not the normal white grid. The grid is mostly there, but some red and black blocks are present. I would have assumed a RAM problem, but the self test says that the ROM and RAM are OK.
The intro screens have a number of horizontal lines present.
During gameplay, everything looks normal EXCEPT for the bottom most area of the playfield. The are horizontal lines covering parts of the "dirt" in that area.
Voltages are good and the problem is repeatable at every boot. Is this symptomatic of a custom chip issues? The 6116 RAM?
Any thoughts would be greatly appreciated.
It boots up and plays fine, but there are some problems with the graphics.
At boot up, the crosshatch is not the normal white grid. The grid is mostly there, but some red and black blocks are present. I would have assumed a RAM problem, but the self test says that the ROM and RAM are OK.
The intro screens have a number of horizontal lines present.
During gameplay, everything looks normal EXCEPT for the bottom most area of the playfield. The are horizontal lines covering parts of the "dirt" in that area.
Voltages are good and the problem is repeatable at every boot. Is this symptomatic of a custom chip issues? The 6116 RAM?
Any thoughts would be greatly appreciated.


