mirror of
https://github.com/mauiaaron/apple2.git
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Refactoring coding style for clarity
This commit is contained in:
Aaron Culliney
parent
f7369869d7
commit
57a01d28a8
341
src/display.c
341
src/display.c
@ -20,19 +20,19 @@
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#define BEGIN_MIX 20
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#define TEXT_COLS 40
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uint8_t temp[1024];// HACK to be removed
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static uint8_t vga_mem_page_0[SCANWIDTH*SCANHEIGHT]; /* page0 framebuffer */
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static uint8_t vga_mem_page_1[SCANWIDTH*SCANHEIGHT]; /* page1 framebuffer */
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// framebuffers
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static uint8_t vga_mem_page_0[SCANWIDTH*SCANHEIGHT];
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static uint8_t vga_mem_page_1[SCANWIDTH*SCANHEIGHT];
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uint8_t video__wider_font[0x8000];
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uint8_t video__font[0x4000];
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/* --- Precalculated hi-res page offsets given addr --- */
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// Precalculated framebuffer offsets given VM addr
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unsigned int video__screen_addresses[8192];
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uint8_t video__columns[8192];
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uint8_t *video__fb1,*video__fb2;
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uint8_t *video__fb1 = NULL;
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uint8_t *video__fb2 = NULL;
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uint8_t video__hires_even[0x800];
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uint8_t video__hires_odd[0x800];
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@ -43,40 +43,34 @@ uint8_t video__dhires2[256];
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// Interface font
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static uint8_t video__int_font[3][0x4000];
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int video__current_page; /* Current visual page */
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int video__current_page; // current visual page
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int video__strictcolors = 1;// refactor : should be static
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int video__strictcolors = 1;// 0 is deprecated
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void video_loadfont(int first,
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int quantity,
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const unsigned char *data,
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int mode)
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{
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int i,j;
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unsigned char x,y,fg,bg;
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switch (mode)
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{
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case 2:
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fg = COLOR_BLACK; bg = COLOR_LIGHT_WHITE; break;
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case 3:
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fg = COLOR_FLASHING_WHITE; bg = COLOR_FLASHING_BLACK; break;
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default:
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fg = COLOR_LIGHT_WHITE; bg = COLOR_BLACK; break;
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void video_loadfont(int first, int quantity, const uint8_t *data, int mode) {
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uint8_t fg = 0;
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uint8_t bg = 0;
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switch (mode) {
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case 2:
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fg = COLOR_BLACK;
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bg = COLOR_LIGHT_WHITE;
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break;
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case 3:
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fg = COLOR_FLASHING_WHITE;
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bg = COLOR_FLASHING_BLACK;
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break;
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default:
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fg = COLOR_LIGHT_WHITE;
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bg = COLOR_BLACK;
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break;
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}
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i = quantity * 8;
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while (i--)
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{
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j = 8;
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x = data[i];
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while (j--)
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{
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y = (x & 128) ? fg : bg;
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video__wider_font[(first << 7) + (i << 4) + (j << 1)] =
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video__wider_font[(first << 7) + (i << 4) + (j << 1) + 1] =
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unsigned int i = quantity * 8;
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while (i--) {
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unsigned int j = 8;
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uint8_t x = data[i];
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while (j--) {
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uint8_t y = (x & 128) ? fg : bg;
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video__wider_font[(first << 7) + (i << 4) + (j << 1)] = video__wider_font[(first << 7) + (i << 4) + (j << 1) + 1] =
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video__font[(first << 6) + (i << 3) + j] = y;
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x <<= 1;
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}
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@ -86,11 +80,12 @@ void video_loadfont(int first,
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uint8_t video__odd_colors[2] = { COLOR_LIGHT_PURPLE, COLOR_LIGHT_BLUE };
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uint8_t video__even_colors[2] = { COLOR_LIGHT_GREEN, COLOR_LIGHT_RED };
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/* 40col/80col/lores/hires/dhires line offsets */
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unsigned short video__line_offset[TEXT_ROWS] =
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{ 0x000, 0x080, 0x100, 0x180, 0x200, 0x280, 0x300, 0x380,
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// 40col/80col/lores/hires/dhires line offsets
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unsigned short video__line_offset[TEXT_ROWS] = {
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0x000, 0x080, 0x100, 0x180, 0x200, 0x280, 0x300, 0x380,
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0x028, 0x0A8, 0x128, 0x1A8, 0x228, 0x2A8, 0x328, 0x3A8,
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0x050, 0x0D0, 0x150, 0x1D0, 0x250, 0x2D0, 0x350, 0x3D0 };
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0x050, 0x0D0, 0x150, 0x1D0, 0x250, 0x2D0, 0x350, 0x3D0
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};
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uint8_t video__dhires1[256] = {
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0x0,0x1,0x2,0x3,0x4,0x5,0x6,0x7,0x8,0x9,0xa,0xb,0xc,0xd,0xe,0xf,
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@ -115,114 +110,69 @@ uint8_t video__dhires2[256] = {
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};
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/* -------------------------------------------------------------------------
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c_initialize_dhires_values()
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------------------------------------------------------------------------- */
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static void c_initialize_dhires_values(void) {
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int i;
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/* int value, v; */
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/* unsigned char locolor, hicolor; */
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/* precalculate the colors for all the 256*8 bit combinations. */
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/* for (value = 0x00, v = 0; value <= 0xFF; value++) { */
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/* locolor = (value & 0x0F) | 0x10; */
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/* hicolor = (value << 4) | 0x10; */
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/* dhires_colors[v++] = locolor; */
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/* dhires_colors[v++] = locolor; */
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/* dhires_colors[v++] = locolor; */
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/* dhires_colors[v++] = locolor; */
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/* dhires_colors[v++] = hicolor; */
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/* dhires_colors[v++] = hicolor; */
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/* dhires_colors[v++] = hicolor; */
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/* dhires_colors[v++] = hicolor; */
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/* } */
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for (i = 0; i < 0x80; i++)
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{
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for (unsigned int i = 0; i < 0x80; i++) {
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video__dhires1[i+0x80] = video__dhires1[i];
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video__dhires2[i+0x80] = video__dhires2[i];
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}
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}
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/* -------------------------------------------------------------------------
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c_initialize_hires_values()
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------------------------------------------------------------------------- */
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static void c_initialize_hires_values(void)
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{
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int value, b, v, e, /*color_toggle,*/ last_not_black;
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/* precalculate the colors for all the 256*8 bit combinations. */
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for (value = 0x00; value <= 0xFF; value++) {
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for (e = value * 8, last_not_black = 0, v = value, b = 0; b < 7; b++, v >>= 1, e++) {
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static void c_initialize_hires_values(void) {
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// precalculate colors for all the 256*8 bit combinations. */
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for (unsigned int value = 0x00; value <= 0xFF; value++) {
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for (unsigned int e = value*8, last_not_black=0, v=value, b=0; b < 7; b++, v >>= 1, e++) {
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if (v & 1) {
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if (last_not_black) {
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video__hires_even[e] = COLOR_LIGHT_WHITE;
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video__hires_odd[e] = COLOR_LIGHT_WHITE;
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if (b > 0)
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{
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video__hires_even[ e - 1 ] = COLOR_LIGHT_WHITE,
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video__hires_odd[ e - 1 ] = COLOR_LIGHT_WHITE;
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video__hires_even[e-1] = COLOR_LIGHT_WHITE,
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video__hires_odd [e-1] = COLOR_LIGHT_WHITE;
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}
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} else {
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if (b & 1) {
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if (value & 0x80) {
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video__hires_even[e] = COLOR_LIGHT_RED;
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video__hires_odd[e] = COLOR_LIGHT_BLUE;
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video__hires_odd [e] = COLOR_LIGHT_BLUE;
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} else {
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video__hires_even[e] = COLOR_LIGHT_GREEN;
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video__hires_odd[e] = COLOR_LIGHT_PURPLE;
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video__hires_odd [e] = COLOR_LIGHT_PURPLE;
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}
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} else {
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if (value & 0x80) {
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video__hires_even[e] = COLOR_LIGHT_BLUE;
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video__hires_odd[e] = COLOR_LIGHT_RED;
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video__hires_odd [e] = COLOR_LIGHT_RED;
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} else {
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video__hires_even[e] = COLOR_LIGHT_PURPLE;
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video__hires_odd[e] = COLOR_LIGHT_GREEN;
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video__hires_odd [e] = COLOR_LIGHT_GREEN;
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}
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}
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}
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last_not_black = 1;
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}
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else
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{
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} else {
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video__hires_even[e] = COLOR_BLACK,
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video__hires_odd[e] = COLOR_BLACK,
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video__hires_odd [e] = COLOR_BLACK,
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last_not_black = 0;
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}
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}
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}
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if (color_mode == COLOR_NONE) /* Black and White */
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{
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for (value = 0x00; value <= 0xFF; value++)
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{
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for (b = 0, e = value * 8; b < 7; b++, e++)
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{
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if (video__hires_even[ e ] != COLOR_BLACK)
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{
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video__hires_even[ e ] = COLOR_LIGHT_WHITE;
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if (color_mode == COLOR_NONE) {
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for (unsigned int value = 0x00; value <= 0xFF; value++) {
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for (unsigned int b = 0, e = value * 8; b < 7; b++, e++) {
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if (video__hires_even[e] != COLOR_BLACK) {
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video__hires_even[e] = COLOR_LIGHT_WHITE;
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}
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if (video__hires_odd[ e ] != COLOR_BLACK)
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{
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video__hires_odd[ e ] = COLOR_LIGHT_WHITE;
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if (video__hires_odd[e] != COLOR_BLACK) {
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video__hires_odd[e] = COLOR_LIGHT_WHITE;
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}
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}
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}
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}
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else if (color_mode == COLOR_INTERP) /* Color and strict interpolation */
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{
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for (value = 0x00; value <= 0xFF; value++)
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{
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for (b = 1, e = value * 8 + 1; b <= 5; b += 2, e += 2)
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{
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if (video__hires_even[e] == COLOR_BLACK)
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{
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} else if (color_mode == COLOR_INTERP) {
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for (unsigned int value = 0x00; value <= 0xFF; value++) {
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for (unsigned int b=1, e=value*8 + 1; b <= 5; b += 2, e += 2) {
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if (video__hires_even[e] == COLOR_BLACK) {
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if (video__hires_even[e-1] != COLOR_BLACK &&
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video__hires_even[e+1] != COLOR_BLACK &&
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video__hires_even[e-1] != COLOR_LIGHT_WHITE &&
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@ -252,11 +202,9 @@ static void c_initialize_hires_values(void)
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{
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video__hires_even[e] = (value & 0x80) ? COLOR_LIGHT_BLUE : COLOR_LIGHT_PURPLE;
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}
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}
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if (video__hires_odd[e] == COLOR_BLACK)
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{
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if (video__hires_odd[e] == COLOR_BLACK) {
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if (video__hires_odd[e-1] != COLOR_BLACK &&
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video__hires_odd[e+1] != COLOR_BLACK &&
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video__hires_odd[e-1] != COLOR_LIGHT_WHITE &&
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@ -289,12 +237,9 @@ static void c_initialize_hires_values(void)
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}
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}
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for (b = 0, e = value * 8; b <= 6; b += 2, e += 2)
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{
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if (video__hires_even[ e ] == COLOR_BLACK)
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{
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if (b > 0 && b < 6)
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{
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for (unsigned int b = 0, e = value * 8; b <= 6; b += 2, e += 2) {
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if (video__hires_even[ e ] == COLOR_BLACK) {
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if (b > 0 && b < 6) {
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if (video__hires_even[e-1] != COLOR_BLACK &&
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video__hires_even[e+1] != COLOR_BLACK &&
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video__hires_even[e-1] != COLOR_LIGHT_WHITE &&
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@ -327,10 +272,8 @@ static void c_initialize_hires_values(void)
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}
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}
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if (video__hires_odd[e] == COLOR_BLACK)
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{
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if (b > 0 && b < 6)
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{
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if (video__hires_odd[e] == COLOR_BLACK) {
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if (b > 0 && b < 6) {
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if (video__hires_odd[e-1] != COLOR_BLACK &&
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video__hires_odd[e+1] != COLOR_BLACK &&
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video__hires_odd[e-1] != COLOR_LIGHT_WHITE &&
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@ -367,109 +310,80 @@ static void c_initialize_hires_values(void)
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}
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}
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/* -------------------------------------------------------------------------
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c_initialize_row_col_tables()
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------------------------------------------------------------------------- */
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static void c_initialize_row_col_tables(void)
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{
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int x, y, off, i;
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/* hires page offsets. initialize to invalid values. */
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for (i = 0; i < 8192; i++)
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{
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static void c_initialize_row_col_tables(void) {
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for (unsigned int i = 0; i < 8192; i++) {
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video__screen_addresses[i] = -1;
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}
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for (y = 0; y < TEXT_ROWS; y++)
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{
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for (off = 0; off < 8; off++)
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{
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for (x = 0; x < 40; x++)
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{
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video__screen_addresses[video__line_offset[y] + 0x400*off + x ] =
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(y*16 + 2*off /* + 8*/) * SCANWIDTH + x*14 + 4;
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video__columns[video__line_offset[y] + 0x400*off + x] =
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(uint8_t)x;
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for (unsigned int y = 0; y < TEXT_ROWS; y++) {
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for (unsigned int off = 0; off < 8; off++) {
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for (unsigned int x = 0; x < 40; x++) {
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video__screen_addresses[video__line_offset[y] + (0x400*off) + x] = (y*16 + 2*off /* + 8*/) * SCANWIDTH + x*14 + 4;
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video__columns [video__line_offset[y] + (0x400*off) + x] = (uint8_t)x;
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}
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}
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}
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}
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static void c_initialize_tables_video(void) {
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int x, y, i;
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// initialize text/lores & hires graphics routines
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for (unsigned int y = 0; y < TEXT_ROWS; y++) {
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for (unsigned int x = 0; x < TEXT_COLS; x++) {
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unsigned int idx = video__line_offset[y] + x + 0x400;
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// text/lores pages
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if (y < 20) {
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cpu65_vmem[idx ].w = video__write_2e_text0;
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cpu65_vmem[idx+0x400].w = video__write_2e_text1;
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} else {
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cpu65_vmem[idx ].w = video__write_2e_text0_mixed;
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cpu65_vmem[idx+0x400].w = video__write_2e_text1_mixed;
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}
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/* initialize text/lores & hires graphics */
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for (y = 0; y < TEXT_ROWS; y++)
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{
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for (x = 0; x < TEXT_COLS; x++)
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{
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/* //e mode: text/lores page 0 */
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cpu65_vmem[ video__line_offset[ y ] + x + 0x400].w =
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(y < 20) ? video__write_2e_text0 :
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video__write_2e_text0_mixed;
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cpu65_vmem[ video__line_offset[ y ] + x + 0x800].w =
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(y < 20) ? video__write_2e_text1 :
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video__write_2e_text1_mixed;
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for (i = 0; i < 8; i++)
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{
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/* //e mode: hires/double hires page 0 */
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cpu65_vmem[ 0x2000 + video__line_offset[ y ]
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+ 0x400 * i + x ].w =
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(y < 20) ? ((x & 1) ? video__write_2e_odd0 :
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video__write_2e_even0)
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: ((x & 1) ? video__write_2e_odd0_mixed :
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video__write_2e_even0_mixed);
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cpu65_vmem[ 0x4000 + video__line_offset[ y ]
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+ 0x400 * i + x ].w =
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(y < 20) ? ((x & 1) ? video__write_2e_odd1 :
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video__write_2e_even1)
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: ((x & 1) ? video__write_2e_odd1_mixed :
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video__write_2e_even1_mixed);
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// hires/dhires pages
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for (unsigned int i = 0; i < 8; i++) {
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idx = 0x2000 + video__line_offset[ y ] + (0x400*i) + x;
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if (y < 20) {
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if (x & 1) {
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cpu65_vmem[idx ].w = video__write_2e_odd0;
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cpu65_vmem[idx+0x2000].w = video__write_2e_odd1;
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} else {
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cpu65_vmem[idx ].w = video__write_2e_even0;
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cpu65_vmem[idx+0x2000].w = video__write_2e_even1;
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}
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} else {
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if (x & 1) {
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cpu65_vmem[idx ].w = video__write_2e_odd0_mixed;
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cpu65_vmem[idx+0x2000].w = video__write_2e_odd1_mixed;
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} else {
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cpu65_vmem[idx ].w = video__write_2e_even0_mixed;
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cpu65_vmem[idx+0x2000].w = video__write_2e_even1_mixed;
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}
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}
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}
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}
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}
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}
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void video_set(int flags)
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{
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void video_set(int flags) {
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video__strictcolors = (color_mode == COLOR_INTERP) ? 2 : 1;
|
||||
|
||||
c_initialize_hires_values(); /* precalculate hires values */
|
||||
c_initialize_row_col_tables(); /* precalculate hires offsets */
|
||||
c_initialize_tables_video(); /* memory jump tables for video */
|
||||
|
||||
c_initialize_dhires_values(); /* set up dhires colors */
|
||||
c_initialize_hires_values();
|
||||
c_initialize_row_col_tables();
|
||||
c_initialize_tables_video();
|
||||
c_initialize_dhires_values();
|
||||
}
|
||||
|
||||
void video_loadfont_int(int first, int quantity, const unsigned char *data)
|
||||
{
|
||||
int i,j;
|
||||
unsigned char x;
|
||||
int y;
|
||||
|
||||
i = quantity * 8;
|
||||
|
||||
while (i--)
|
||||
{
|
||||
j = 8;
|
||||
x = data[i];
|
||||
while (j--)
|
||||
{
|
||||
y = (first << 6) + (i << 3) + j;
|
||||
if (x & 128)
|
||||
{
|
||||
video__int_font[0][y] =
|
||||
video__int_font[1][y] = COLOR_LIGHT_GREEN;
|
||||
void video_loadfont_int(int first, int quantity, const uint8_t *data) {
|
||||
unsigned int i = quantity * 8;
|
||||
while (i--) {
|
||||
unsigned int j = 8;
|
||||
uint8_t x = data[i];
|
||||
while (j--) {
|
||||
unsigned int y = (first << 6) + (i << 3) + j;
|
||||
if (x & 128) {
|
||||
video__int_font[0][y] = video__int_font[1][y] = COLOR_LIGHT_GREEN;
|
||||
video__int_font[2][y] = COLOR_LIGHT_RED;
|
||||
}
|
||||
else
|
||||
{
|
||||
video__int_font[0][y] =
|
||||
video__int_font[2][y] = COLOR_BLACK;
|
||||
} else {
|
||||
video__int_font[0][y] = video__int_font[2][y] = COLOR_BLACK;
|
||||
video__int_font[1][y] = COLOR_MEDIUM_BLUE;
|
||||
}
|
||||
x <<= 1;
|
||||
@ -477,6 +391,9 @@ void video_loadfont_int(int first, int quantity, const unsigned char *data)
|
||||
}
|
||||
}
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
// Plotting routines
|
||||
|
||||
static inline void _plot_char40(uint8_t **d, uint8_t **s) {
|
||||
*((uint32_t *)(*d)) = *((uint32_t *)(*s));
|
||||
*d += 4, *s += 4;
|
||||
@ -529,13 +446,11 @@ static inline void _plot_lores(uint8_t **d, const uint32_t val) {
|
||||
*((uint16_t *)(*d)) = (uint16_t)(val & 0xffff);
|
||||
}
|
||||
|
||||
void video_plotchar( int x, int y, int scheme, unsigned char c )
|
||||
{
|
||||
int off;
|
||||
unsigned char *d;
|
||||
unsigned char *s;
|
||||
void video_plotchar( int x, int y, int scheme, uint8_t c ) {
|
||||
uint8_t *d;
|
||||
uint8_t *s;
|
||||
|
||||
off = y * SCANWIDTH * 16 + x * 7 + 4;
|
||||
unsigned int off = y * SCANWIDTH * 16 + x * 7 + 4;
|
||||
s = video__int_font[scheme] + c * 64;
|
||||
d = video__fb1 + off;
|
||||
|
||||
|
||||
@ -63,10 +63,7 @@ void video_set(int flags);
|
||||
* adaptors which color normal text and MouseText differently. I had one
|
||||
* once for a //c.
|
||||
*/
|
||||
void video_loadfont(int first,
|
||||
int qty,
|
||||
const unsigned char *data,
|
||||
int mode);
|
||||
void video_loadfont(int first, int qty, const uint8_t *data, int mode);
|
||||
|
||||
/* Redraw the display. This is called after exiting an interface display,
|
||||
* when changes have been made to the Apple's emulated framebuffer that
|
||||
@ -83,7 +80,7 @@ void video_setpage(int page);
|
||||
/* Like loadfont, but writes to a seperate 256 character table used by
|
||||
* video_plotchar and not the apple text-mode display.
|
||||
*/
|
||||
void video_loadfont_int(int first, int qty, const unsigned char *data);
|
||||
void video_loadfont_int(int first, int qty, const uint8_t *data);
|
||||
|
||||
/* Plot a character to the text mode screen, *not* writing to apple
|
||||
* memory. This is used by the interface screens.
|
||||
@ -95,7 +92,7 @@ void video_loadfont_int(int first, int qty, const unsigned char *data);
|
||||
* 1 - Green text on Blue background
|
||||
* 2 - Red text on Black background
|
||||
*/
|
||||
void video_plotchar(int row, int col, int color, unsigned char code);
|
||||
void video_plotchar(int row, int col, int color, uint8_t code);
|
||||
|
||||
/*
|
||||
* Draws video and possibly handles keyboard input.
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user