Continue Flag

The Continue Flag tells the HDMA controller whether to continue transferring data after the first transfer unit. It is bit 7 of NTRLx.

When set, the DMA controller sends a single transfer unit to the destination for every scanline, during hblank.

When clear, the DMA controller sends a transfer unit to the destination just once, for the first scanline, and then does not transfer anything else at least until reaching the Nth scanline, where N was the initial value of the HDMA Scanline Counter.

References

• page 2-28-13 of Book I of the official Super Nintendo development manual
• the bit cells labeled "C" in the diagrams are the continue flag: Appendix B-2 of Book I, lbid
• https://wiki.superfamicom.org/grog's-guide-to-dma-and-hdma-on-the-snes