1.1 --- a/include/vga_common.h Sat Nov 10 19:20:13 2018 +0100
1.2 +++ b/include/vga_common.h Sat Nov 10 21:30:09 2018 +0100
1.3 @@ -40,4 +40,21 @@
1.4
1.5 #define VSYNC_END 622
1.6
1.7 +/* Define DMA channels if not indicated in the build configuration. */
1.8 +
1.9 +/* CPU-based transfers: no channels. */
1.10 +
1.11 +#ifdef TRANSFER_CPU
1.12 +#define LINE_CHANNELS 0
1.13 +
1.14 +/* DMA-based transfers: single channel by default. */
1.15 +
1.16 +#else
1.17 +
1.18 +#ifndef LINE_CHANNELS
1.19 +#define LINE_CHANNELS 1
1.20 +#endif
1.21 +
1.22 +#endif /* TRANSFER_CPU */
1.23 +
1.24 #endif /* __VGA_COMMON_H__ */