| Line 24... |
Line 24... |
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static void biosfn_set_video_mode();
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static void biosfn_set_video_mode();
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static void biosfn_set_cursor_pos();
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static void biosfn_set_cursor_pos();
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static void biosfn_get_cursor_pos();
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static void biosfn_get_cursor_pos();
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static void biosfn_scroll();
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static void biosfn_scroll();
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static void biosfn_read_char_attr();
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static void biosfn_write_char_attr();
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static void biosfn_write_char_only();
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static void biosfn_write_teletype();
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static void biosfn_write_teletype();
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static void biosfn_load_text_8_16_pat();
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static void biosfn_load_text_8_16_pat();
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static void biosfn_write_string();
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static void biosfn_write_string();
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extern Bit8u video_save_pointer_table[];
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extern Bit8u video_save_pointer_table[];
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| Line 171... |
Line 174... |
push cx
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push cx
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push dx
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push dx
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push bx
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push bx
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push sp
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push sp
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mov bx, sp
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mov bx, sp
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sseg
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add [bx], #10
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add [bx], #10
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sseg
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mov bx, [bx+2]
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mov bx, [bx+2]
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push bp
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push bp
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push si
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push si
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push di
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push di
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| Line 232... |
Line 237... |
; inc sp
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; inc sp
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ret
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ret
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#if defined(USE_BX_INFO) || defined(DEBUG)
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#if defined(USE_BX_INFO) || defined(DEBUG)
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msg_vga_init:
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msg_vga_init:
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.ascii "VGABios $Id: vgabios.c,v 1.7 2009-02-06 03:48:27 zeus Exp $"
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.ascii "VGABios $Id: vgabios.c,v 1.8 2009-03-02 01:02:33 zeus Exp $"
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.byte 0x0d,0x0a,0x00
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.byte 0x0d,0x0a,0x00
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#endif
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#endif
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ASM_END
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ASM_END
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// --------------------------------------------------------------------------------------------
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// --------------------------------------------------------------------------------------------
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| Line 414... |
Line 419... |
biosfn_scroll(GET_AL(),GET_BH(),GET_CH(),GET_CL(),GET_DH(),GET_DL(),0xFF,SCROLL_UP);
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biosfn_scroll(GET_AL(),GET_BH(),GET_CH(),GET_CL(),GET_DH(),GET_DL(),0xFF,SCROLL_UP);
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break;
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break;
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case 0x07:
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case 0x07:
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biosfn_scroll(GET_AL(),GET_BH(),GET_CH(),GET_CL(),GET_DH(),GET_DL(),0xFF,SCROLL_DOWN);
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biosfn_scroll(GET_AL(),GET_BH(),GET_CH(),GET_CL(),GET_DH(),GET_DL(),0xFF,SCROLL_DOWN);
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break;
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break;
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case 0x08:
|
|
biosfn_read_char_attr(GET_BH(),&AX);
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break;
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case 0x09:
|
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biosfn_write_char_attr(GET_AL(),GET_BH(),GET_BL(),CX);
|
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break;
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case 0x0A:
|
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biosfn_write_char_only(GET_AL(),GET_BH(),GET_BL(),CX);
|
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break;
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case 0x0E:
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case 0x0E:
|
// Ralf Brown Interrupt list is WRONG on bh(page)
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// Ralf Brown Interrupt list is WRONG on bh(page)
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// We do output only on the current page !
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// We do output only on the current page !
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biosfn_write_teletype(GET_AL(),0xff,GET_BL(),NO_ATTR);
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biosfn_write_teletype(GET_AL(),0xff,GET_BL(),NO_ATTR);
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break;
|
break;
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| Line 736... |
Line 750... |
}
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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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// --------------------------------------------------------------------------------------------
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// --------------------------------------------------------------------------------------------
|
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static void biosfn_read_char_attr (page,car)
|
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Bit8u page;Bit16u *car;
|
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{Bit16u ss=get_SS();
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Bit8u xcurs,ycurs,mode,line;
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Bit16u nbcols,nbrows,address;
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Bit16u cursor,dummy;
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|
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// Get the mode
|
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mode=read_byte(BIOSMEM_SEG,BIOSMEM_CURRENT_MODE);
|
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line=find_vga_entry(mode);
|
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if(line==0xFF)return;
|
|
|
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// Get the cursor pos for the page
|
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biosfn_get_cursor_pos(page,&dummy,&cursor);
|
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xcurs=cursor&0x00ff;ycurs=(cursor&0xff00)>>8;
|
|
|
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// Get the dimensions
|
|
nbrows=read_byte(BIOSMEM_SEG,BIOSMEM_NB_ROWS)+1;
|
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nbcols=read_word(BIOSMEM_SEG,BIOSMEM_NB_COLS);
|
|
|
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// Compute the address
|
|
address=SCREEN_MEM_START(nbcols,nbrows,page)+(xcurs+ycurs*nbcols)*2;
|
|
|
|
write_word(ss,car,read_word(vga_modes[line].sstart,address));
|
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}
|
|
|
|
// --------------------------------------------------------------------------------------------
|
|
static void biosfn_write_char_attr (car,page,attr,count)
|
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Bit8u car;Bit8u page;Bit8u attr;Bit16u count;
|
|
{
|
|
Bit8u cheight,xcurs,ycurs,mode,line,bpp;
|
|
Bit16u nbcols,nbrows,address;
|
|
Bit16u cursor,dummy;
|
|
|
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// Get the mode
|
|
mode=read_byte(BIOSMEM_SEG,BIOSMEM_CURRENT_MODE);
|
|
line=find_vga_entry(mode);
|
|
if(line==0xFF)return;
|
|
|
|
// Get the cursor pos for the page
|
|
biosfn_get_cursor_pos(page,&dummy,&cursor);
|
|
xcurs=cursor&0x00ff;ycurs=(cursor&0xff00)>>8;
|
|
|
|
// Get the dimensions
|
|
nbrows=read_byte(BIOSMEM_SEG,BIOSMEM_NB_ROWS)+1;
|
|
nbcols=read_word(BIOSMEM_SEG,BIOSMEM_NB_COLS);
|
|
|
|
// Compute the address
|
|
address=SCREEN_MEM_START(nbcols,nbrows,page)+(xcurs+ycurs*nbcols)*2;
|
|
|
|
dummy=((Bit16u)attr<<8)+car;
|
|
memsetw(vga_modes[line].sstart,address,dummy,count);
|
|
}
|
|
|
|
// --------------------------------------------------------------------------------------------
|
|
static void biosfn_write_char_only (car,page,attr,count)
|
|
Bit8u car;Bit8u page;Bit8u attr;Bit16u count;
|
|
{
|
|
Bit8u cheight,xcurs,ycurs,mode,line,bpp;
|
|
Bit16u nbcols,nbrows,address;
|
|
Bit16u cursor,dummy;
|
|
|
|
// Get the mode
|
|
mode=read_byte(BIOSMEM_SEG,BIOSMEM_CURRENT_MODE);
|
|
line=find_vga_entry(mode);
|
|
if(line==0xFF)return;
|
|
|
|
// Get the cursor pos for the page
|
|
biosfn_get_cursor_pos(page,&dummy,&cursor);
|
|
xcurs=cursor&0x00ff;ycurs=(cursor&0xff00)>>8;
|
|
|
|
// Get the dimensions
|
|
nbrows=read_byte(BIOSMEM_SEG,BIOSMEM_NB_ROWS)+1;
|
|
nbcols=read_word(BIOSMEM_SEG,BIOSMEM_NB_COLS);
|
|
|
|
// Compute the address
|
|
address=SCREEN_MEM_START(nbcols,nbrows,page)+(xcurs+ycurs*nbcols)*2;
|
|
|
|
while(count-->0)
|
|
{write_byte(vga_modes[line].sstart,address,car);
|
|
address+=2;
|
|
}
|
|
}
|
|
|
|
// --------------------------------------------------------------------------------------------
|
static void biosfn_write_teletype (car, page, attr, flag)
|
static void biosfn_write_teletype (car, page, attr, flag)
|
Bit8u car;Bit8u page;Bit8u attr;Bit8u flag;
|
Bit8u car;Bit8u page;Bit8u attr;Bit8u flag;
|
{// flag = WITH_ATTR / NO_ATTR
|
{// flag = WITH_ATTR / NO_ATTR
|
|
|
Bit8u cheight,xcurs,ycurs,mode,line,bpp;
|
Bit8u cheight,xcurs,ycurs,mode,line,bpp;
|
