| Line 25... |
Line 25... |
static unsigned char buffer[FB_SIZEY * FB_SIZEX];
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static unsigned char buffer[FB_SIZEY * FB_SIZEX];
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static unsigned long pal[256];
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static unsigned long pal[256];
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static int fb_pic;
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static int fb_pic;
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static int fb_cycles;
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static int fb_cycles;
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/* Variable to screen buffer. */
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struct dev_memarea *buf_area;
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static unsigned long fb_addr;
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/* Write a register */
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/* Write a register */
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void fb_buf_write8 (unsigned long addr, unsigned long value)
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void fb_buf_write8 (unsigned long addr, unsigned long value)
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{
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{
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int a = addr - config.fb.bufaddr;
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int a = addr - fb_addr;
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if (a < 0 || a >= FB_SIZEY * FB_SIZEX) {
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if (a < 0 || a >= FB_SIZEY * FB_SIZEX) {
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fprintf (stderr, "Write out of screen buffer (0x%08x)!\n", addr);
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fprintf (stderr, "Write out of screen buffer (0x%08x)!\n", addr);
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cont_run = 0;
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cont_run = 0;
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} else buffer[a] = value;
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} else buffer[a] = value;
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}
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}
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/* Write a register */
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void fb_pal_write32 (unsigned long addr, unsigned long value)
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{
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int a = (addr - config.fb.paladdr) / 4;
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if (a < 0 || a >= 256) {
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fprintf (stderr, "Write out of palette buffer (0x%08x)!\n", addr);
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cont_run = 0;
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} else pal[a] = value;
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}
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/* Read a register */
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/* Read a register */
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unsigned long fb_buf_read8 (unsigned long addr)
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unsigned long fb_buf_read8 (unsigned long addr)
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{
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{
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int a = (addr - config.fb.bufaddr);
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int a = (addr - fb_addr);
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if (a < 0 || a >= FB_SIZEY * FB_SIZEX) {
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if (a < 0 || a >= FB_SIZEY * FB_SIZEX) {
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fprintf (stderr, "Read out of screen buffer (0x%08x)!\n", addr);
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fprintf (stderr, "Read out of screen buffer (0x%08x)!\n", addr);
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cont_run = 0;
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cont_run = 0;
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return 0;
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return 0;
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} else return buffer[a];
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} else return buffer[a];
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}
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}
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static void change_buf_addr (unsigned long addr)
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{
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unsigned long size_mask = bit_mask (FB_SIZEX * FB_SIZEY);
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unsigned long addr_mask = ~size_mask;
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buf_area->addr_mask = addr_mask;
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buf_area->addr_compare = addr & addr_mask;
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fb_addr = addr;
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}
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/* Write a register */
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void fb_write32 (unsigned long addr, unsigned long value)
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{
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int a = (addr - config.fb.baseaddr);
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switch (a) {
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case FB_CTRL: break;
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case FB_BUFADDR: change_buf_addr (value); break;
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default:
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a -= FB_PAL;
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a /= 4;
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if (a < 0 || a >= 256) {
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fprintf (stderr, "Write out of palette buffer (0x%08x)!\n", addr);
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cont_run = 0;
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} else pal[a] = value;
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break;
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}
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}
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/* Read a register */
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/* Read a register */
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unsigned long fb_pal_read32 (unsigned long addr)
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unsigned long fb_read32 (unsigned long addr)
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{
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{
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int a = (addr - config.fb.paladdr) / 4;
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int a = (addr - config.fb.baseaddr);
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switch (a) {
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case FB_CTRL: return 0; break;
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case FB_BUFADDR: return fb_addr; break;
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default:
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a -= FB_PAL;
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a /= 4;
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if (a < 0 || a >= 256) {
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if (a < 0 || a >= 256) {
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fprintf (stderr, "Read out of palette buffer (0x%08x)!\n", addr);
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fprintf (stderr, "Read out of palette buffer (0x%08x)!\n", addr);
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cont_run = 0;
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cont_run = 0;
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return 0;
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return 0;
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} else return pal[a];
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} else return pal[a];
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}
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}
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}
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/* define these also for big endian */
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/* define these also for big endian */
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#define CNV16(x) (x)
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#define CNV16(x) (x)
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#define CNV32(x) (x)
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#define CNV32(x) (x)
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| Line 119... |
Line 147... |
if (!fwrite (&u32, 4, 1, fo)) return 1;
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if (!fwrite (&u32, 4, 1, fo)) return 1;
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for (i = 0; i < 256; i++) {
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for (i = 0; i < 256; i++) {
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unsigned long val, d;
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unsigned long val, d;
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d = pal[i];
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d = pal[i];
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val = ((d >> 0) & 0xff) << 0; /* Blue */
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val = ((d >> 12) & 0xf) << 0 + 4; /* Blue */
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val |= ((d >> 8) & 0xff) << 8; /* Green */
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val |= ((d >> 8) & 0xf) << 8 + 4; /* Green */
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val |= ((d >> 16) & 0xff) << 16; /* Red */
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val |= ((d >> 4) & 0xf) << 16 + 4; /* Red */
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val = CNV32(pal[i]);
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val = CNV32(pal[i]);
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if (!fwrite (&val, 4, 1, fo)) return 1;
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if (!fwrite (&val, 4, 1, fo)) return 1;
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}
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}
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if (config.sim.verbose) printf ("(%i,%i)", sx, sy);
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if (config.sim.verbose) printf ("(%i,%i)", sx, sy);
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| Line 153... |
Line 181... |
fb_pic = 0;
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fb_pic = 0;
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fb_cycles = 0;
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fb_cycles = 0;
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for (i = 0; i < 256; i++)
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for (i = 0; i < 256; i++)
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pal[i] = (i << 16) | (i << 8) | (i << 0);
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pal[i] = (i << 16) | (i << 8) | (i << 0);
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if (config.fb.bufaddr)
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register_memoryarea(config.fb.bufaddr, FB_SIZEX * FB_SIZEY, 1, fb_buf_read8, fb_buf_write8);
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register_memoryarea(config.fb.bufaddr, FB_SIZEX * FB_SIZEY, 1, fb_buf_read8, fb_buf_write8);
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buf_area = cur_area;
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if (config.fb.paladdr)
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if (config.fb.baseaddr)
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register_memoryarea(config.fb.paladdr, 256*4, 4, fb_pal_read32, fb_pal_write32);
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register_memoryarea(config.fb.baseaddr, FB_PAL + 256*4, 4, fb_read32, fb_write32);
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}
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}
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}
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}
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/* Handles one VGA clock */
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/* Handles one VGA clock */
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void fb_clock ()
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void fb_clock ()
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