RESOLVED!! - Mr Do's Castle - odd character display
The unicorns and hittable blocks in the attached image have lines thru them - not aways the same lines, but never correct. Likewise some of the ladders seem to shimmer. The background and score page is always correct. I did notice that the 'castle' on the logo screen shows oddities for the first several seconds after the machine is powered on. All machine tests pass.
I've removed all the removable chips and cleaned the pins, and removed them a 2nd time to make sure i hadn't bent any pins.
Does anyone know if this is an EPROM issue, or a RAM issue?
Does anyone know which EPROM are used for graphics?
thanks for any info,
John
The unicorns and hittable blocks in the attached image have lines thru them - not aways the same lines, but never correct. Likewise some of the ladders seem to shimmer. The background and score page is always correct. I did notice that the 'castle' on the logo screen shows oddities for the first several seconds after the machine is powered on. All machine tests pass.
I've removed all the removable chips and cleaned the pins, and removed them a 2nd time to make sure i hadn't bent any pins.
Does anyone know if this is an EPROM issue, or a RAM issue?
Does anyone know which EPROM are used for graphics?
thanks for any info,
John
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