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Diffstat (limited to 'src/devices/video/pc_vga.cpp')
-rw-r--r--src/devices/video/pc_vga.cpp348
1 files changed, 136 insertions, 212 deletions
diff --git a/src/devices/video/pc_vga.cpp b/src/devices/video/pc_vga.cpp
index 33f2f48d999..9f0bf5c48a7 100644
--- a/src/devices/video/pc_vga.cpp
+++ b/src/devices/video/pc_vga.cpp
@@ -449,42 +449,37 @@ uint32_t vga_device::start_addr()
void vga_device::vga_vh_text(bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
- uint8_t ch, attr;
- uint8_t bits;
- uint32_t font_base;
- uint32_t *bitmapline;
int width=VGA_CH_WIDTH, height = (vga.crtc.maximum_scan_line) * (vga.crtc.scan_doubling + 1);
- int pos, line, column, mask, w, h, addr;
- uint8_t blink_en,fore_col,back_col;
- pen_t pen;
if(vga.crtc.cursor_enable)
vga.cursor.visible = screen().frame_number() & 0x10;
else
vga.cursor.visible = 0;
- for (addr = vga.crtc.start_addr, line = -vga.crtc.preset_row_scan; line < TEXT_LINES;
+ for (int addr = vga.crtc.start_addr, line = -vga.crtc.preset_row_scan; line < TEXT_LINES;
line += height, addr += (offset()>>1))
{
- for (pos = addr, column=0; column<TEXT_COLUMNS; column++, pos++)
+ for (int pos = addr, column=0; column<TEXT_COLUMNS; column++, pos++)
{
- ch = vga.memory[(pos<<1) + 0];
- attr = vga.memory[(pos<<1) + 1];
- font_base = 0x20000+(ch<<5);
+ uint8_t ch = vga.memory[(pos<<1) + 0];
+ uint8_t attr = vga.memory[(pos<<1) + 1];
+ uint32_t font_base = 0x20000+(ch<<5);
font_base += ((attr & 8) ? vga.sequencer.char_sel.A : vga.sequencer.char_sel.B)*0x2000;
- blink_en = (vga.attribute.data[0x10]&8&&screen().frame_number() & 0x20) ? attr & 0x80 : 0;
+ uint8_t blink_en = (vga.attribute.data[0x10]&8&&screen().frame_number() & 0x20) ? attr & 0x80 : 0;
- fore_col = attr & 0xf;
- back_col = (attr & 0x70) >> 4;
+ uint8_t fore_col = attr & 0xf;
+ uint8_t back_col = (attr & 0x70) >> 4;
back_col |= (vga.attribute.data[0x10]&8) ? 0 : ((attr & 0x80) >> 4);
- for (h = std::max(-line, 0); (h < height) && (line+h < std::min(TEXT_LINES, bitmap.height())); h++)
+ for (int h = std::max(-line, 0); (h < height) && (line+h < std::min(TEXT_LINES, bitmap.height())); h++)
{
- bitmapline = &bitmap.pix32(line+h);
- bits = vga.memory[font_base+(h>>(vga.crtc.scan_doubling))];
+ uint32_t *const bitmapline = &bitmap.pix(line+h);
+ uint8_t bits = vga.memory[font_base+(h>>(vga.crtc.scan_doubling))];
+ int mask, w;
for (mask=0x80, w=0; (w<width)&&(w<8); w++, mask>>=1)
{
+ pen_t pen;
if (bits&mask)
pen = vga.pens[blink_en ? back_col : fore_col];
else
@@ -498,6 +493,7 @@ void vga_device::vga_vh_text(bitmap_rgb32 &bitmap, const rectangle &cliprect)
if (w<width)
{
/* 9 column */
+ pen_t pen;
if (TEXT_COPY_9COLUMN(ch)&&(bits&1))
pen = vga.pens[blink_en ? back_col : fore_col];
else
@@ -510,7 +506,7 @@ void vga_device::vga_vh_text(bitmap_rgb32 &bitmap, const rectangle &cliprect)
}
if (vga.cursor.visible&&(pos==vga.crtc.cursor_addr))
{
- for (h=vga.crtc.cursor_scan_start;
+ for (int h=vga.crtc.cursor_scan_start;
(h<=vga.crtc.cursor_scan_end)&&(h<height)&&(line+h<TEXT_LINES);
h++)
{
@@ -525,34 +521,29 @@ void vga_device::vga_vh_text(bitmap_rgb32 &bitmap, const rectangle &cliprect)
void vga_device::vga_vh_ega(bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
- int pos, line, column, c, addr, i, yi;
int height = vga.crtc.maximum_scan_line * (vga.crtc.scan_doubling + 1);
- uint32_t *bitmapline;
- pen_t pen;
int pel_shift = (vga.attribute.pel_shift & 7);
// popmessage("%08x %02x",EGA_START_ADDRESS,pel_shift);
/**/
- for (addr=EGA_START_ADDRESS, pos=0, line=0; line<LINES;
- line += height, addr += offset())
+ for (int addr=EGA_START_ADDRESS, line=0; line<LINES; line += height, addr += offset())
{
- for(yi=0;yi<height;yi++)
+ for (int yi=0;yi<height;yi++)
{
- bitmapline = &bitmap.pix32(line + yi);
+ uint32_t *const bitmapline = &bitmap.pix(line + yi);
- for (pos=addr, c=0, column=0; column<EGA_COLUMNS+1; column++, c+=8, pos=(pos+1)&0xffff)
+ for (int pos=addr, c=0, column=0; column<EGA_COLUMNS+1; column++, c+=8, pos=(pos+1)&0xffff)
{
- int data[4];
+ int data[4] = {
+ vga.memory[(pos & 0xffff)],
+ vga.memory[(pos & 0xffff)+0x10000]<<1,
+ vga.memory[(pos & 0xffff)+0x20000]<<2,
+ vga.memory[(pos & 0xffff)+0x30000]<<3 };
- data[0]=vga.memory[(pos & 0xffff)];
- data[1]=vga.memory[(pos & 0xffff)+0x10000]<<1;
- data[2]=vga.memory[(pos & 0xffff)+0x20000]<<2;
- data[3]=vga.memory[(pos & 0xffff)+0x30000]<<3;
-
- for (i = 7; i >= 0; i--)
+ for (int i = 7; i >= 0; i--)
{
- pen = vga.pens[(data[0]&1) | (data[1]&2) | (data[2]&4) | (data[3]&8)];
+ pen_t pen = vga.pens[(data[0]&1) | (data[1]&2) | (data[2]&4) | (data[3]&8)];
data[0]>>=1;
data[1]>>=1;
@@ -571,26 +562,21 @@ void vga_device::vga_vh_ega(bitmap_rgb32 &bitmap, const rectangle &cliprect)
/* TODO: I'm guessing that in 256 colors mode every pixel actually outputs two pixels. Is it right? */
void vga_device::vga_vh_vga(bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
- int pos, line, column, c, addr, curr_addr;
- uint32_t *bitmapline;
- uint16_t mask_comp;
int height = vga.crtc.maximum_scan_line * (vga.crtc.scan_doubling + 1);
- int yi;
- int xi;
int pel_shift = (vga.attribute.pel_shift & 6);
int addrmask = vga.crtc.no_wrap ? -1 : 0xffff;
/* line compare is screen sensitive */
- mask_comp = 0x3ff; //| (LINES & 0x300);
+ uint16_t mask_comp = 0x3ff; //| (LINES & 0x300);
// popmessage("%02x %02x",vga.attribute.pel_shift,vga.sequencer.data[4] & 0x08);
- curr_addr = 0;
+ int curr_addr = 0;
if(!(vga.sequencer.data[4] & 0x08))
{
- for (addr = start_addr(), line=0; line<LINES; line+=height, addr+=offset(), curr_addr+=offset())
+ for (int addr = start_addr(), line=0; line<LINES; line+=height, addr+=offset(), curr_addr+=offset())
{
- for(yi = 0;yi < height; yi++)
+ for(int yi = 0;yi < height; yi++)
{
if((line + yi) < (vga.crtc.line_compare & mask_comp))
curr_addr = addr;
@@ -599,15 +585,15 @@ void vga_device::vga_vh_vga(bitmap_rgb32 &bitmap, const rectangle &cliprect)
curr_addr = 0;
pel_shift = 0;
}
- bitmapline = &bitmap.pix32(line + yi);
- for (pos=curr_addr, c=0, column=0; column<VGA_COLUMNS+1; column++, c+=8, pos++)
+ uint32_t *const bitmapline = &bitmap.pix(line + yi);
+ for (int pos=curr_addr, c=0, column=0; column<VGA_COLUMNS+1; column++, c+=8, pos++)
{
if(pos > 0x80000/4)
return;
- for(xi=0;xi<8;xi++)
+ for(int xi=0;xi<8;xi++)
{
- if(!screen().visible_area().contains(c+xi-(pel_shift), line + yi))
+ if (!screen().visible_area().contains(c+xi-(pel_shift), line + yi))
continue;
bitmapline[c+xi-(pel_shift)] = pen(vga.memory[(pos & addrmask)+((xi >> 1)*0x10000)]);
}
@@ -617,22 +603,22 @@ void vga_device::vga_vh_vga(bitmap_rgb32 &bitmap, const rectangle &cliprect)
}
else
{
- for (addr = start_addr(), line=0; line<LINES; line+=height, addr+=offset(), curr_addr+=offset())
+ for (int addr = start_addr(), line=0; line<LINES; line+=height, addr+=offset(), curr_addr+=offset())
{
- for(yi = 0;yi < height; yi++)
+ for(int yi = 0;yi < height; yi++)
{
if((line + yi) < (vga.crtc.line_compare & mask_comp))
curr_addr = addr;
if((line + yi) == (vga.crtc.line_compare & mask_comp))
curr_addr = 0;
- bitmapline = &bitmap.pix32(line + yi);
+ uint32_t *const bitmapline = &bitmap.pix(line + yi);
//addr %= 0x80000;
- for (pos=curr_addr, c=0, column=0; column<VGA_COLUMNS+1; column++, c+=0x10, pos+=0x8)
+ for (int pos=curr_addr, c=0, column=0; column<VGA_COLUMNS+1; column++, c+=0x10, pos+=0x8)
{
if(pos + 0x08 > 0x80000)
return;
- for(xi=0;xi<0x10;xi++)
+ for (int xi=0;xi<0x10;xi++)
{
if(!screen().visible_area().contains(c+xi-(pel_shift), line + yi))
continue;
@@ -646,28 +632,23 @@ void vga_device::vga_vh_vga(bitmap_rgb32 &bitmap, const rectangle &cliprect)
void vga_device::vga_vh_cga(bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
- uint32_t *bitmapline;
int height = (vga.crtc.scan_doubling + 1);
- int x,xi,y,yi;
- uint32_t addr;
- pen_t pen;
- int width;
- width = (vga.crtc.horz_disp_end + 1) * 8;
+ int width = (vga.crtc.horz_disp_end + 1) * 8;
- for(y=0;y<LINES;y++)
+ for(int y=0;y<LINES;y++)
{
- addr = ((y & 1) * 0x2000) + (((y & ~1) >> 1) * width/4);
+ uint32_t addr = ((y & 1) * 0x2000) + (((y & ~1) >> 1) * width/4);
- for(x=0;x<width;x+=4)
+ for(int x=0;x<width;x+=4)
{
- for(yi=0;yi<height;yi++)
+ for(int yi=0;yi<height;yi++)
{
- bitmapline = &bitmap.pix32(y * height + yi);
+ uint32_t *const bitmapline = &bitmap.pix(y * height + yi);
- for(xi=0;xi<4;xi++)
+ for(int xi=0;xi<4;xi++)
{
- pen = vga.pens[(vga.memory[addr] >> (6-xi*2)) & 3];
+ pen_t pen = vga.pens[(vga.memory[addr] >> (6-xi*2)) & 3];
if(!screen().visible_area().contains(x+xi, y * height + yi))
continue;
bitmapline[x+xi] = pen;
@@ -681,28 +662,23 @@ void vga_device::vga_vh_cga(bitmap_rgb32 &bitmap, const rectangle &cliprect)
void vga_device::vga_vh_mono(bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
- uint32_t *bitmapline;
int height = (vga.crtc.scan_doubling + 1);
- int x,xi,y,yi;
- uint32_t addr;
- pen_t pen;
- int width;
- width = (vga.crtc.horz_disp_end + 1) * 8;
+ int width = (vga.crtc.horz_disp_end + 1) * 8;
- for(y=0;y<LINES;y++)
+ for(int y=0;y<LINES;y++)
{
- addr = ((y & 1) * 0x2000) + (((y & ~1) >> 1) * width/8);
+ uint32_t addr = ((y & 1) * 0x2000) + (((y & ~1) >> 1) * width/8);
- for(x=0;x<width;x+=8)
+ for(int x=0;x<width;x+=8)
{
- for(yi=0;yi<height;yi++)
+ for(int yi=0;yi<height;yi++)
{
- bitmapline = &bitmap.pix32(y * height + yi);
+ uint32_t *const bitmapline = &bitmap.pix(y * height + yi);
- for(xi=0;xi<8;xi++)
+ for(int xi=0;xi<8;xi++)
{
- pen = vga.pens[(vga.memory[addr] >> (7-xi)) & 1];
+ pen_t pen = vga.pens[(vga.memory[addr] >> (7-xi)) & 1];
if(!screen().visible_area().contains(x+xi, y * height + yi))
continue;
bitmapline[x+xi] = pen;
@@ -716,18 +692,12 @@ void vga_device::vga_vh_mono(bitmap_rgb32 &bitmap, const rectangle &cliprect)
void svga_device::svga_vh_rgb8(bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
- int pos, line, column, c, addr, curr_addr;
- uint32_t *bitmapline;
- uint16_t mask_comp;
int height = vga.crtc.maximum_scan_line * (vga.crtc.scan_doubling + 1);
- int yi;
- int xi;
- uint8_t start_shift;
-// uint16_t line_length;
/* line compare is screen sensitive */
- mask_comp = 0x3ff;
- curr_addr = 0;
+ uint16_t mask_comp = 0x3ff;
+ int curr_addr = 0;
+// uint16_t line_length;
// if(vga.crtc.dw)
// line_length = vga.crtc.offset << 3; // doubleword mode
// else
@@ -735,29 +705,27 @@ void svga_device::svga_vh_rgb8(bitmap_rgb32 &bitmap, const rectangle &cliprect)
// line_length = vga.crtc.offset << 4;
// }
- start_shift = (!(vga.sequencer.data[4] & 0x08)) ? 2 : 0;
+ uint8_t start_shift = (!(vga.sequencer.data[4] & 0x08)) ? 2 : 0;
+ for (int addr = VGA_START_ADDRESS << start_shift, line=0; line<LINES; line+=height, addr+=offset(), curr_addr+=offset())
{
- for (addr = VGA_START_ADDRESS << start_shift, line=0; line<LINES; line+=height, addr+=offset(), curr_addr+=offset())
+ for (int yi = 0;yi < height; yi++)
{
- for(yi = 0;yi < height; yi++)
+ if((line + yi) < (vga.crtc.line_compare & mask_comp))
+ curr_addr = addr;
+ if((line + yi) == (vga.crtc.line_compare & mask_comp))
+ curr_addr = 0;
+ uint32_t *const bitmapline = &bitmap.pix(line + yi);
+ addr %= vga.svga_intf.vram_size;
+ for (int pos=curr_addr, c=0, column=0; column<VGA_COLUMNS; column++, c+=8, pos+=0x8)
{
- if((line + yi) < (vga.crtc.line_compare & mask_comp))
- curr_addr = addr;
- if((line + yi) == (vga.crtc.line_compare & mask_comp))
- curr_addr = 0;
- bitmapline = &bitmap.pix32(line + yi);
- addr %= vga.svga_intf.vram_size;
- for (pos=curr_addr, c=0, column=0; column<VGA_COLUMNS; column++, c+=8, pos+=0x8)
- {
- if(pos + 0x08 >= vga.svga_intf.vram_size)
- return;
+ if(pos + 0x08 >= vga.svga_intf.vram_size)
+ return;
- for(xi=0;xi<8;xi++)
- {
- if(!screen().visible_area().contains(c+xi, line + yi))
- continue;
- bitmapline[c+xi] = pen(vga.memory[(pos+(xi))]);
- }
+ for (int xi=0;xi<8;xi++)
+ {
+ if(!screen().visible_area().contains(c+xi, line + yi))
+ continue;
+ bitmapline[c+xi] = pen(vga.memory[(pos+(xi))]);
}
}
}
@@ -767,38 +735,29 @@ void svga_device::svga_vh_rgb8(bitmap_rgb32 &bitmap, const rectangle &cliprect)
void svga_device::svga_vh_rgb15(bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
#define MV(x) (vga.memory[x]+(vga.memory[x+1]<<8))
- #define IV 0xff000000
+ constexpr uint32_t IV = 0xff000000;
int height = vga.crtc.maximum_scan_line * (vga.crtc.scan_doubling + 1);
- int xi;
- int yi;
- int xm;
- int pos, line, column, c, addr, curr_addr;
-
- uint32_t *bitmapline;
-// uint16_t mask_comp;
/* line compare is screen sensitive */
-// mask_comp = 0xff | (TLINES & 0x300);
- curr_addr = 0;
- yi=0;
- for (addr = TGA_START_ADDRESS, line=0; line<TLINES; line+=height, addr+=offset(), curr_addr+=offset())
+// uint16_t mask_comp = 0xff | (TLINES & 0x300);
+ int curr_addr = 0;
+ int yi=0;
+ for (int addr = TGA_START_ADDRESS, line=0; line<TLINES; line+=height, addr+=offset(), curr_addr+=offset())
{
- bitmapline = &bitmap.pix32(line);
+ uint32_t *const bitmapline = &bitmap.pix(line);
addr %= vga.svga_intf.vram_size;
- for (pos=addr, c=0, column=0; column<TGA_COLUMNS; column++, c+=8, pos+=0x10)
+ for (int pos=addr, c=0, column=0; column<TGA_COLUMNS; column++, c+=8, pos+=0x10)
{
if(pos + 0x10 >= vga.svga_intf.vram_size)
return;
- for(xi=0,xm=0;xi<8;xi++,xm+=2)
+ for(int xi=0,xm=0;xi<8;xi++,xm+=2)
{
- int r,g,b;
-
if(!screen().visible_area().contains(c+xi, line + yi))
continue;
- r = (MV(pos+xm)&0x7c00)>>10;
- g = (MV(pos+xm)&0x03e0)>>5;
- b = (MV(pos+xm)&0x001f)>>0;
+ int r = (MV(pos+xm)&0x7c00)>>10;
+ int g = (MV(pos+xm)&0x03e0)>>5;
+ int b = (MV(pos+xm)&0x001f)>>0;
r = (r << 3) | (r & 0x7);
g = (g << 3) | (g & 0x7);
b = (b << 3) | (b & 0x7);
@@ -811,38 +770,29 @@ void svga_device::svga_vh_rgb15(bitmap_rgb32 &bitmap, const rectangle &cliprect)
void svga_device::svga_vh_rgb16(bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
#define MV(x) (vga.memory[x]+(vga.memory[x+1]<<8))
- #define IV 0xff000000
+ constexpr uint32_t IV = 0xff000000;
int height = vga.crtc.maximum_scan_line * (vga.crtc.scan_doubling + 1);
- int xi;
- int yi;
- int xm;
- int pos, line, column, c, addr, curr_addr;
-
- uint32_t *bitmapline;
-// uint16_t mask_comp;
/* line compare is screen sensitive */
-// mask_comp = 0xff | (TLINES & 0x300);
- curr_addr = 0;
- yi=0;
- for (addr = TGA_START_ADDRESS, line=0; line<TLINES; line+=height, addr+=offset(), curr_addr+=offset())
+// uint16_t mask_comp = 0xff | (TLINES & 0x300);
+ int curr_addr = 0;
+ int yi=0;
+ for (int addr = TGA_START_ADDRESS, line=0; line<TLINES; line+=height, addr+=offset(), curr_addr+=offset())
{
- bitmapline = &bitmap.pix32(line);
+ uint32_t *const bitmapline = &bitmap.pix(line);
addr %= vga.svga_intf.vram_size;
- for (pos=addr, c=0, column=0; column<TGA_COLUMNS; column++, c+=8, pos+=0x10)
+ for (int pos=addr, c=0, column=0; column<TGA_COLUMNS; column++, c+=8, pos+=0x10)
{
if(pos + 0x10 >= vga.svga_intf.vram_size)
return;
- for(xi=0,xm=0;xi<8;xi++,xm+=2)
+ for (int xi=0,xm=0;xi<8;xi++,xm+=2)
{
- int r,g,b;
-
if(!screen().visible_area().contains(c+xi, line + yi))
continue;
- r = (MV(pos+xm)&0xf800)>>11;
- g = (MV(pos+xm)&0x07e0)>>5;
- b = (MV(pos+xm)&0x001f)>>0;
+ int r = (MV(pos+xm)&0xf800)>>11;
+ int g = (MV(pos+xm)&0x07e0)>>5;
+ int b = (MV(pos+xm)&0x001f)>>0;
r = (r << 3) | (r & 0x7);
g = (g << 2) | (g & 0x3);
b = (b << 3) | (b & 0x7);
@@ -855,39 +805,30 @@ void svga_device::svga_vh_rgb16(bitmap_rgb32 &bitmap, const rectangle &cliprect)
void svga_device::svga_vh_rgb24(bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
#define MD(x) (vga.memory[x]+(vga.memory[x+1]<<8)+(vga.memory[x+2]<<16))
- #define ID 0xff000000
+ constexpr uint32_t ID = 0xff000000;
int height = vga.crtc.maximum_scan_line * (vga.crtc.scan_doubling + 1);
- int xi;
- int yi;
- int xm;
- int pos, line, column, c, addr, curr_addr;
- uint32_t *bitmapline;
-
-// uint16_t mask_comp;
/* line compare is screen sensitive */
-// mask_comp = 0xff | (TLINES & 0x300);
- curr_addr = 0;
- yi=0;
- for (addr = TGA_START_ADDRESS<<1, line=0; line<TLINES; line+=height, addr+=offset(), curr_addr+=offset())
+// uint16_t mask_comp = 0xff | (TLINES & 0x300);
+ int curr_addr = 0;
+ int yi=0;
+ for (int addr = TGA_START_ADDRESS<<1, line=0; line<TLINES; line+=height, addr+=offset(), curr_addr+=offset())
{
- bitmapline = &bitmap.pix32(line);
+ uint32_t *const bitmapline = &bitmap.pix(line);
addr %= vga.svga_intf.vram_size;
- for (pos=addr, c=0, column=0; column<TGA_COLUMNS; column++, c+=8, pos+=24)
+ for (int pos=addr, c=0, column=0; column<TGA_COLUMNS; column++, c+=8, pos+=24)
{
if(pos + 24 >= vga.svga_intf.vram_size)
return;
- for(xi=0,xm=0;xi<8;xi++,xm+=3)
+ for (int xi=0,xm=0;xi<8;xi++,xm+=3)
{
- int r,g,b;
-
if(!screen().visible_area().contains(c+xi, line + yi))
continue;
- r = (MD(pos+xm)&0xff0000)>>16;
- g = (MD(pos+xm)&0x00ff00)>>8;
- b = (MD(pos+xm)&0x0000ff)>>0;
- bitmapline[c+xi] = IV|(r<<16)|(g<<8)|(b<<0);
+ int r = (MD(pos+xm)&0xff0000)>>16;
+ int g = (MD(pos+xm)&0x00ff00)>>8;
+ int b = (MD(pos+xm)&0x0000ff)>>0;
+ bitmapline[c+xi] = ID|(r<<16)|(g<<8)|(b<<0);
}
}
}
@@ -896,39 +837,32 @@ void svga_device::svga_vh_rgb24(bitmap_rgb32 &bitmap, const rectangle &cliprect)
void svga_device::svga_vh_rgb32(bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
#define MD(x) (vga.memory[x]+(vga.memory[x+1]<<8)+(vga.memory[x+2]<<16))
- #define ID 0xff000000
+ constexpr uint32_t ID = 0xff000000;
int height = vga.crtc.maximum_scan_line * (vga.crtc.scan_doubling + 1);
- int xi;
- int yi;
- int xm;
- int pos, line, column, c, addr, curr_addr;
- uint32_t *bitmapline;
// uint16_t mask_comp;
/* line compare is screen sensitive */
// mask_comp = 0xff | (TLINES & 0x300);
- curr_addr = 0;
- yi=0;
- for (addr = TGA_START_ADDRESS, line=0; line<TLINES; line+=height, addr+=(offset()), curr_addr+=(offset()))
+ int curr_addr = 0;
+ int yi=0;
+ for (int addr = TGA_START_ADDRESS, line=0; line<TLINES; line+=height, addr+=(offset()), curr_addr+=(offset()))
{
- bitmapline = &bitmap.pix32(line);
+ uint32_t *const bitmapline = &bitmap.pix(line);
addr %= vga.svga_intf.vram_size;
- for (pos=addr, c=0, column=0; column<TGA_COLUMNS; column++, c+=8, pos+=0x20)
+ for (int pos=addr, c=0, column=0; column<TGA_COLUMNS; column++, c+=8, pos+=0x20)
{
if(pos + 0x20 >= vga.svga_intf.vram_size)
return;
- for(xi=0,xm=0;xi<8;xi++,xm+=4)
+ for (int xi=0,xm=0;xi<8;xi++,xm+=4)
{
- int r,g,b;
-
if(!screen().visible_area().contains(c+xi, line + yi))
continue;
- r = (MD(pos+xm)&0xff0000)>>16;
- g = (MD(pos+xm)&0x00ff00)>>8;
- b = (MD(pos+xm)&0x0000ff)>>0;
- bitmapline[c+xi] = IV|(r<<16)|(g<<8)|(b<<0);
+ int r = (MD(pos+xm)&0xff0000)>>16;
+ int g = (MD(pos+xm)&0x00ff00)>>8;
+ int b = (MD(pos+xm)&0x0000ff)>>0;
+ bitmapline[c+xi] = ID|(r<<16)|(g<<8)|(b<<0);
}
}
}
@@ -936,13 +870,11 @@ void svga_device::svga_vh_rgb32(bitmap_rgb32 &bitmap, const rectangle &cliprect)
uint8_t vga_device::pc_vga_choosevideomode()
{
- int i;
-
if (vga.crtc.sync_en)
{
if (vga.dac.dirty)
{
- for (i=0; i<256;i++)
+ for (int i=0; i<256;i++)
{
/* TODO: color shifters? */
set_pen_color(i, (vga.dac.color[3*(i & vga.dac.mask)] & 0x3f) << 2,
@@ -954,7 +886,7 @@ uint8_t vga_device::pc_vga_choosevideomode()
if (vga.attribute.data[0x10] & 0x80)
{
- for (i=0; i<16;i++)
+ for (int i=0; i<16;i++)
{
vga.pens[i] = pen((vga.attribute.data[i]&0x0f)
|((vga.attribute.data[0x14]&0xf)<<4));
@@ -962,7 +894,7 @@ uint8_t vga_device::pc_vga_choosevideomode()
}
else
{
- for (i=0; i<16;i++)
+ for (int i=0; i<16;i++)
{
vga.pens[i] = pen((vga.attribute.data[i]&0x3f)
|((vga.attribute.data[0x14]&0xc)<<4));
@@ -997,13 +929,11 @@ uint8_t vga_device::pc_vga_choosevideomode()
uint8_t svga_device::pc_vga_choosevideomode()
{
- int i;
-
if (vga.crtc.sync_en)
{
if (vga.dac.dirty)
{
- for (i=0; i<256;i++)
+ for (int i=0; i<256;i++)
{
/* TODO: color shifters? */
set_pen_color(i, (vga.dac.color[3*(i & vga.dac.mask)] & 0x3f) << 2,
@@ -1015,7 +945,7 @@ uint8_t svga_device::pc_vga_choosevideomode()
if (vga.attribute.data[0x10] & 0x80)
{
- for (i=0; i<16;i++)
+ for (int i=0; i<16;i++)
{
vga.pens[i] = pen((vga.attribute.data[i]&0x0f)
|((vga.attribute.data[0x14]&0xf)<<4));
@@ -1023,7 +953,7 @@ uint8_t svga_device::pc_vga_choosevideomode()
}
else
{
- for (i=0; i<16;i++)
+ for (int i=0; i<16;i++)
{
vga.pens[i] = pen((vga.attribute.data[i]&0x3f)
|((vga.attribute.data[0x14]&0xc)<<4));
@@ -1132,32 +1062,26 @@ uint32_t svga_device::screen_update(screen_device &screen, bitmap_rgb32 &bitmap,
uint32_t s3_vga_device::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
- uint8_t cur_mode;
-
svga_device::screen_update(screen, bitmap, cliprect);
- cur_mode = pc_vga_choosevideomode();
+ uint8_t cur_mode = pc_vga_choosevideomode();
// draw hardware graphics cursor
// TODO: support 16 bit and greater video modes
if(s3.cursor_mode & 0x01) // if cursor is enabled
{
- uint32_t src;
- uint32_t* dst;
- uint8_t val;
- int x,y;
uint16_t cx = s3.cursor_x & 0x07ff;
uint16_t cy = s3.cursor_y & 0x07ff;
- uint32_t bg_col;
- uint32_t fg_col;
- int r,g,b;
- uint32_t datax;
if(cur_mode == SCREEN_OFF || cur_mode == TEXT_MODE || cur_mode == MONO_MODE || cur_mode == CGA_MODE || cur_mode == EGA_MODE)
return 0; // cursor only works in VGA or SVGA modes
- src = s3.cursor_start_addr * 1024; // start address is in units of 1024 bytes
+ uint32_t src = s3.cursor_start_addr * 1024; // start address is in units of 1024 bytes
+ uint32_t bg_col;
+ uint32_t fg_col;
+ int r,g,b;
+ uint32_t datax;
switch(cur_mode)
{
case RGB15_MODE:
@@ -1204,16 +1128,16 @@ uint32_t s3_vga_device::screen_update(screen_device &screen, bitmap_rgb32 &bitma
// ,(s3.cursor_fg[0])|(s3.cursor_fg[1]<<8)|(s3.cursor_fg[2]<<16)|(s3.cursor_fg[3]<<24));
// for(x=0;x<64;x++)
// printf("%08x: %02x %02x %02x %02x\n",src+x*4,vga.memory[src+x*4],vga.memory[src+x*4+1],vga.memory[src+x*4+2],vga.memory[src+x*4+3]);
- for(y=0;y<64;y++)
+ for(int y=0;y<64;y++)
{
if(cy + y < cliprect.max_y && cx < cliprect.max_x)
{
- dst = &bitmap.pix32(cy + y, cx);
- for(x=0;x<64;x++)
+ uint32_t *const dst = &bitmap.pix(cy + y, cx);
+ for(int x=0;x<64;x++)
{
uint16_t bita = (vga.memory[(src+1) % vga.svga_intf.vram_size] | ((vga.memory[(src+0) % vga.svga_intf.vram_size]) << 8)) >> (15-(x % 16));
uint16_t bitb = (vga.memory[(src+3) % vga.svga_intf.vram_size] | ((vga.memory[(src+2) % vga.svga_intf.vram_size]) << 8)) >> (15-(x % 16));
- val = ((bita & 0x01) << 1) | (bitb & 0x01);
+ uint8_t val = ((bita & 0x01) << 1) | (bitb & 0x01);
if(s3.extended_dac_ctrl & 0x10)
{ // X11 mode
switch(val)