#include #include "sh7091/serial.hpp" #include "dve.hpp" #include "holly.hpp" #include "holly_bits.hpp" #include "video_output.hpp" namespace video_output { void set_framebuffer_resolution(const uint32_t x_size, const uint32_t y_size) { holly.Y_COEFF = y_coeff::coefficient_1(0x80) | y_coeff::coefficient_0_2(0x40); // in 6.10 fixed point; 0x0400 is 1x vertical scale holly.SCALER_CTL = scaler_ctl::vertical_scale_factor(0x0400); holly.FB_BURSTCTRL = fb_burstctrl::wr_burst(0x09) | fb_burstctrl::vid_lat(0x3f) | fb_burstctrl::vid_burst(0x39); holly.FB_X_CLIP = fb_x_clip::fb_x_clip_max(x_size - 1) | fb_x_clip::fb_x_clip_min(0); holly.FB_Y_CLIP = fb_y_clip::fb_y_clip_max(y_size - 1) | fb_y_clip::fb_y_clip_min(0); holly.FB_R_SIZE = fb_r_size::fb_modulus(1) | fb_r_size::fb_y_size(y_size - 3) | fb_r_size::fb_x_size((x_size * 16) / 32 - 1); } void set_mode(const struct mode& mode) { holly.FB_R_CTRL = mode.fb_r_ctrl | fb_r_ctrl::fb_depth::_0565_rgb_16bit | fb_r_ctrl::fb_enable; holly.SPG_LOAD = mode.spg_load; holly.SPG_HBLANK = mode.spg_hblank; holly.SPG_VBLANK = mode.spg_vblank; holly.SPG_WIDTH = mode.spg_width; holly.SPG_CONTROL = mode.spg_control; holly.VO_STARTX = mode.vo_startx; holly.VO_STARTY = mode.vo_starty; holly.VO_CONTROL = mode.vo_control; holly.SPG_HBLANK_INT = mode.spg_hblank_int; holly.SPG_VBLANK_INT = mode.spg_vblank_int; } uint32_t get_cable_type() { // set all pins to input sh7091.BSC.PCTRA = 0; // get cable type from pins 9 + 8 return sh7091.BSC.PDTRA & pdtra::cable_type::bit_mask; } void automatic() { switch (get_cable_type()) { case pdtra::cable_type::vga: set_mode(vga); set_framebuffer_resolution(640, 480); aica.common.VREG(vreg::output_mode::vga); break; case pdtra::cable_type::rgb: set_mode(ntsc_ni); set_framebuffer_resolution(320, 240); aica.common.VREG(vreg::output_mode::rgb); break; case pdtra::cable_type::cvbs_yc: set_mode(pal_ni); set_framebuffer_resolution(320, 240); aica.common.VREG(vreg::output_mode::cvbs_yc); break; } } }