108 lines
2.1 KiB
C++
108 lines
2.1 KiB
C++
#include <stdint.h>
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#include "cache.h"
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#include "load.h"
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#include "vga.h"
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#include "sh7091.h"
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#include "sh7091_bits.h"
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#include "memorymap.h"
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#include "systembus.h"
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#include "holly.h"
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#include "holly/core_bits.h"
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#include "rgb.h"
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#include "scene.h"
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extern uint32_t __bss_link_start __asm("__bss_link_start");
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extern uint32_t __bss_link_end __asm("__bss_link_end");
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void serial()
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{
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sh7091.SCIF.SCSCR2 = 0;
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sh7091.SCIF.SCSMR2 = 0;
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sh7091.SCIF.SCBRR2 = 1; // 520833.3
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sh7091.SCIF.SCFCR2 = SCFCR2__TFRST | SCFCR2__RFRST;
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// tx/rx trigger on 1 byte
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sh7091.SCIF.SCFCR2 = 0;
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sh7091.SCIF.SCSPTR2 = 0;
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sh7091.SCIF.SCLSR2 = 0;
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sh7091.SCIF.SCSCR2 = SCSCR2__TE | SCSCR2__RE;
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}
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inline void serial_char(const char c)
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{
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// wait for transmit fifo to become empty
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while ((sh7091.SCIF.SCFSR2 & SCFSR2__TDFE) == 0);
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sh7091.SCIF.SCFTDR2 = static_cast<uint8_t>(c);
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}
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void serial_string(const char * s)
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{
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return;
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while (*s != '\0') {
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serial_char(*s++);
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}
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}
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extern "C"
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void main()
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{
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cache_init();
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// clear BSS
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uint32_t * start = &__bss_link_start;
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uint32_t * end = &__bss_link_end;
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while (start < end) {
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*start++ = 0;
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}
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//serial();
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vga();
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v_sync_in();
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volatile uint16_t * framebuffer = reinterpret_cast<volatile uint16_t *>(&texture_memory[0]);
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for (int y = 0; y < 480; y++) {
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for (int x = 0; x < 640; x++) {
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struct hsv hsv = {(y * 255) / 480, 255, 255};
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struct rgb rgb = hsv_to_rgb(hsv);
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framebuffer[y * 640 + x] = ((rgb.r >> 3) << 11) | ((rgb.g >> 2) << 5) | ((rgb.b >> 3) << 0);
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}
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}
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holly.SOFTRESET = softreset::pipeline_soft_reset
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| softreset::ta_soft_reset;
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holly.SOFTRESET = 0;
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system.LMMODE0 = 1;
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system.LMMODE1 = 1;
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v_sync_out();
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v_sync_in();
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scene_holly_init();
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scene_init_texture_memory();
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int frame = 0;
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while (1) {
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scene_ta_init();
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scene_geometry_transfer();
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scene_wait_opaque_list();
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scene_start_render(frame);
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frame = !frame;
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// I do not understand why, but flycast does not show the first-rendered
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// framebuffer.
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v_sync_out();
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v_sync_in();
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}
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}
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