mirror of
https://github.com/yourtion/30dayMakeOS.git
synced 2026-02-03 01:53:24 +08:00
123 lines
3.7 KiB
C
123 lines
3.7 KiB
C
void io_hlt(void);
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void io_cli(void);
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void io_out8(int port, int data);
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int io_load_eflags(void);
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void io_store_eflags(int eflags);
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void init_palette(void);
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void set_palette(int start, int end, unsigned char *rgb);
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void boxfill8(unsigned char *vram, int xsize, unsigned char c, int x0, int y0, int x1, int y1);
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void init_screen(char *vram, int x, int y);
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#define COL8_000000 0
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#define COL8_FF0000 1
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#define COL8_00FF00 2
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#define COL8_FFFF00 3
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#define COL8_0000FF 4
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#define COL8_FF00FF 5
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#define COL8_00FFFF 6
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#define COL8_FFFFFF 7
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#define COL8_C6C6C6 8
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#define COL8_840000 9
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#define COL8_008400 10
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#define COL8_848400 11
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#define COL8_000084 12
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#define COL8_840084 13
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#define COL8_008484 14
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#define COL8_848484 15
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void HariMain(void)
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{
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char *vram;
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int xsize, ysize;
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short *binfo_scrnx, *binfo_scrny;
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int *binfo_vram;
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init_palette();
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binfo_scrnx = (short *) 0x0ff4;
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binfo_scrny = (short *) 0x0ff6;
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binfo_vram = (int *) 0x0ff8;
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xsize = *binfo_scrnx;
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ysize = *binfo_scrny;
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vram = (char *) *binfo_vram;
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init_screen(vram, xsize, ysize);
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for (;;) {
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io_hlt();
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}
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}
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void init_palette(void)
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{
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static unsigned char table_rgb[16 * 3] = {
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0x00, 0x00, 0x00, /* 0:<3A><> */
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0xff, 0x00, 0x00, /* 1:<3A><><EFBFBD>邢<EFBFBD><E982A2> */
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0x00, 0xff, 0x00, /* 2:<3A><><EFBFBD>邢<EFBFBD><E982A2> */
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0xff, 0xff, 0x00, /* 3:<3A><><EFBFBD>邢<EFBFBD><E982A2><EFBFBD>F */
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0x00, 0x00, 0xff, /* 4:<3A><><EFBFBD>邢<EFBFBD><E982A2> */
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0xff, 0x00, 0xff, /* 5:<3A><><EFBFBD>邢<EFBFBD><E982A2> */
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0x00, 0xff, 0xff, /* 6:<3A><><EFBFBD>邢<EFBFBD><E982A2><EFBFBD>F */
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0xff, 0xff, 0xff, /* 7:<3A><> */
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0xc6, 0xc6, 0xc6, /* 8:<3A><><EFBFBD>邢<EFBFBD>D<EFBFBD>F */
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0x84, 0x00, 0x00, /* 9:<3A>Â<EFBFBD><C382><EFBFBD> */
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0x00, 0x84, 0x00, /* 10:<3A>Â<EFBFBD><C382><EFBFBD> */
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0x84, 0x84, 0x00, /* 11:<3A>Â<EFBFBD><C382><EFBFBD><EFBFBD>F */
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0x00, 0x00, 0x84, /* 12:<3A>Â<EFBFBD><C382><EFBFBD> */
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0x84, 0x00, 0x84, /* 13:<3A>Â<EFBFBD><C382><EFBFBD> */
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0x00, 0x84, 0x84, /* 14:<3A>Â<EFBFBD><C382><EFBFBD><EFBFBD>F */
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0x84, 0x84, 0x84 /* 15:<3A>Â<EFBFBD><C382>D<EFBFBD>F */
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};
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set_palette(0, 15, table_rgb);
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return;
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/* static char <20><><EFBFBD>߂́A<CD81>f<EFBFBD>[<5B>^<5E>ɂ<EFBFBD><C982><EFBFBD><EFBFBD>g<EFBFBD><67><EFBFBD>Ȃ<EFBFBD><C882><EFBFBD><EFBFBD><EFBFBD>DB<44><42><EFBFBD>ߑ<EFBFBD><DF91><EFBFBD> */
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}
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void set_palette(int start, int end, unsigned char *rgb)
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{
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int i, eflags;
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eflags = io_load_eflags(); /* <20><><EFBFBD>荞<EFBFBD><EFBFBD><DD8B>t<C283><74><EFBFBD>O<EFBFBD>̒l<CC92><6C><EFBFBD>L<EFBFBD>^<5E><><EFBFBD><EFBFBD> */
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io_cli(); /* <20><><EFBFBD>t<C283><74><EFBFBD>O<EFBFBD><4F>0<EFBFBD>ɂ<EFBFBD><C982>Ċ<EFBFBD><C48A>荞<EFBFBD>֎~<7E>ɂ<EFBFBD><C982><EFBFBD> */
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io_out8(0x03c8, start);
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for (i = start; i <= end; i++) {
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io_out8(0x03c9, rgb[0] / 4);
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io_out8(0x03c9, rgb[1] / 4);
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io_out8(0x03c9, rgb[2] / 4);
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rgb += 3;
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}
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io_store_eflags(eflags); /* <20><><EFBFBD>荞<EFBFBD><EFBFBD><DD8B>t<C283><74><EFBFBD>O<EFBFBD><4F><EFBFBD><EFBFBD><EFBFBD>ɖ߂<C996> */
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return;
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}
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void boxfill8(unsigned char *vram, int xsize, unsigned char c, int x0, int y0, int x1, int y1)
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{
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int x, y;
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for (y = y0; y <= y1; y++) {
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for (x = x0; x <= x1; x++)
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vram[y * xsize + x] = c;
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}
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return;
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}
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void init_screen(char *vram, int x, int y)
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{
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boxfill8(vram, x, COL8_008484, 0, 0, x - 1, y - 29);
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boxfill8(vram, x, COL8_C6C6C6, 0, y - 28, x - 1, y - 28);
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boxfill8(vram, x, COL8_FFFFFF, 0, y - 27, x - 1, y - 27);
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boxfill8(vram, x, COL8_C6C6C6, 0, y - 26, x - 1, y - 1);
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boxfill8(vram, x, COL8_FFFFFF, 3, y - 24, 59, y - 24);
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boxfill8(vram, x, COL8_FFFFFF, 2, y - 24, 2, y - 4);
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boxfill8(vram, x, COL8_848484, 3, y - 4, 59, y - 4);
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boxfill8(vram, x, COL8_848484, 59, y - 23, 59, y - 5);
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boxfill8(vram, x, COL8_000000, 2, y - 3, 59, y - 3);
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boxfill8(vram, x, COL8_000000, 60, y - 24, 60, y - 3);
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boxfill8(vram, x, COL8_848484, x - 47, y - 24, x - 4, y - 24);
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boxfill8(vram, x, COL8_848484, x - 47, y - 23, x - 47, y - 4);
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boxfill8(vram, x, COL8_FFFFFF, x - 47, y - 3, x - 4, y - 3);
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boxfill8(vram, x, COL8_FFFFFF, x - 3, y - 24, x - 3, y - 3);
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return;
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}
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