video.h

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/*a Includes */

/*a Types */
/*t t_video_bus */
typedef struct {
    bit    vsync "Asserted for one whole line at start of back porch of frame, simultaneous with hsync";
    bit    hsync "Asserted for one cycle at start of back porch";
    bit    display_enable "Asserted after end of back porch for display pixels/lines";
    bit[8] red;
    bit[8] green;
    bit[8] blue;
} t_video_bus;

/*t t_adv7123
 *
 */
typedef struct {
    bit vs       "Vsync asserted for n horizontal lines";
    bit hs       "Hsync asserted for n cycles to start retrace and the end of a line";
    bit blank_n  "Drive high for RGB out to come from red/green/blue; low for RGB to be blanking level";
    bit sync_n   "Composite sync, drive low if sync-on-green is not required, should only be driven low in blanking";
    bit[10] red   "Red data, latched on rising clock";
    bit[10] green "Green data, latched on rising clock";
    bit[10] blue  "Blue data, latched on rising clock";
} t_adv7123;