From 4285861027c4ecdfa1855020bed77acba03729cd Mon Sep 17 00:00:00 2001 From: Mahyar Koshkouei Date: Thu, 24 Mar 2022 17:19:36 +0000 Subject: [PATCH] main: add VSYNC delay information Signed-off-by: Mahyar Koshkouei --- src/main.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/src/main.c b/src/main.c index a076360..2b72094 100644 --- a/src/main.c +++ b/src/main.c @@ -1,6 +1,16 @@ #define ENABLE_LCD 0 #define ENABLE_SOUND 0 +/** + * Reducing VSYNC calculation to lower multiple. + * When setting a clock IRQ to DMG_CLOCK_FREQ_REDUCED, count to + * SCREEN_REFRESH_CYCLES_REDUCED to obtain the time required each VSYNC. + * DMG_CLOCK_FREQ_REDUCED = 2^18, and SCREEN_REFRESH_CYCLES_REDUCED = 4389. + */ +#define VSYNC_REDUCTION_FACTOR 16u +#define SCREEN_REFRESH_CYCLES_REDUCED (SCREEN_REFRESH_CYCLES/VSYNC_REDUCTION_FACTOR) +#define DMG_CLOCK_FREQ_REDUCED (DMG_CLOCK_FREQ/VSYNC_REDUCTION_FACTOR) + /* C Headers */ #include