Revision 1 PPU1 Time Over Bug

The Revision 1 PPU1 Time Over Bug is a hardware problem documented by Nintendo.

Trigger

All three of the following conditions must be present for the problem to trigger:

• The size of OBJ 0 is 16x16, 32x32, or 64x64
• OBJ 0's horizontal position is 0 through 255
• There are other objects with negative horizontal positions (offscreen)

Symptom

• The Time Over Flag becomes set

See Also

• Revision 1 CPU DMA crash

References

• page 2-25-2 of Book I of the official Super Nintendo development manual