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Add 4 color cga mode scrolling.

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@460
This commit is contained in:
Sjoerd van der Berg 2002-10-28 22:15:02 +00:00
parent 63cd877bab
commit 7cdf73a07e
1 changed files with 28 additions and 7 deletions
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35
src/ints/int10_char.cpp
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@ -24,6 +24,17 @@
#include "inout.h"
#include "int10.h"
static INLINE void CGA_CopyRow(VGAMODES * curmode,Bit8u cleft,Bit8u cright,Bit8u rold,Bit8u rnew,PhysPt base) {
PhysPt dest=base+((curmode->twidth*rnew)*(curmode->cheight/2)+cleft)*2;
PhysPt src=base+((curmode->twidth*rold)*(curmode->cheight/2)+cleft)*2;
Bitu copy=(cright-cleft)*2;Bitu nextline=curmode->twidth*2;
for (Bits i=0;i<curmode->cheight/2;i++) {
MEM_BlockCopy(dest,src,copy);
MEM_BlockCopy(dest+8*1024,src+8*1024,copy);
dest+=nextline;src+=nextline;
}
}
static INLINE void PLANAR4_CopyRow(VGAMODES * curmode,Bit8u cleft,Bit8u cright,Bit8u rold,Bit8u rnew,PhysPt base) {
PhysPt src,dest;Bitu copy;
dest=base+(curmode->twidth*rnew)*curmode->cheight+cleft;
@ -38,7 +49,6 @@ static INLINE void PLANAR4_CopyRow(VGAMODES * curmode,Bit8u cleft,Bit8u cright,B
for (;copy>0;copy--) {
for (Bitu x=0;x<rowsize;x++) mem_writeb(dest+x,mem_readb(src+x));
dest+=nextline;src+=nextline;
}
/* Restore registers */
IO_Write(0x3ce,5);IO_Write(0x3cf,0); /* Normal transfer mode */
@ -52,6 +62,19 @@ static INLINE void TEXT_CopyRow(VGAMODES * curmode,Bit8u cleft,Bit8u cright,Bit8
MEM_BlockCopy(dest,src,(cright-cleft)*2);
}
static INLINE void CGA_FillRow(VGAMODES * curmode,Bit8u cleft,Bit8u cright,Bit8u row,PhysPt base,Bit8u attr) {
PhysPt dest=base+((curmode->twidth*row)*(curmode->cheight/2)+cleft)*2;
Bitu copy=(cright-cleft)*2;Bitu nextline=curmode->twidth*2;
for (Bits i=0;i<curmode->cheight/2;i++) {
for (Bitu x=0;x<copy;x++) {
mem_writeb(dest+x,attr);
mem_writeb(dest+8*1024+x,attr);
}
dest+=nextline;
}
}
static INLINE void PLANAR4_FillRow(VGAMODES * curmode,Bit8u cleft,Bit8u cright,Bit8u row,PhysPt base,Bit8u attr) {
/* Set Bitmask / Color / Full Set Reset */
IO_Write(0x3ce,0x8);IO_Write(0x3cf,0xff);
@ -77,12 +100,10 @@ static INLINE void TEXT_FillRow(VGAMODES * curmode,Bit8u cleft,Bit8u cright,Bit8
mem_writew(dest,fill);
dest+=2;
}
}
void INT10_ScrollWindow(Bit8u rul,Bit8u cul,Bit8u rlr,Bit8u clr,Bit8s nlines,Bit8u attr,Bit8u page) {
/* Do some range checking */
BIOS_NCOLS;BIOS_NROWS;
if(rul>rlr) return;
@ -116,9 +137,10 @@ void INT10_ScrollWindow(Bit8u rul,Bit8u cul,Bit8u rlr,Bit8u clr,Bit8s nlines,Bit
case MTEXT:
case CTEXT:
TEXT_CopyRow(curmode,cul,clr,start,start+nlines,base);break;
case CGA:
CGA_CopyRow(curmode,cul,clr,start,start+nlines,base);break;
case PLANAR4:
PLANAR4_CopyRow(curmode,cul,clr,start,start+nlines,base);break;
}
} while (start!=end);
/* Fill some lines */
@ -134,6 +156,8 @@ filling:
case MTEXT:
case CTEXT:
TEXT_FillRow(curmode,cul,clr,start,base,attr);break;
case CGA:
CGA_FillRow(curmode,cul,clr,start,base,attr);break;
case PLANAR4:
PLANAR4_FillRow(curmode,cul,clr,start,base,attr);break;
}
@ -260,9 +284,6 @@ INLINE static void WriteChar(Bit16u col,Bit16u row,Bit8u page,Bit8u chr,Bit8u at
}
}
void INT10_WriteChar(Bit8u chr,Bit8u attr,Bit8u page,Bit16u count,bool showattr) {
if(page==0xFF) page=real_readb(BIOSMEM_SEG,BIOSMEM_CURRENT_PAGE);
Bit8u cur_row=CURSOR_POS_ROW(page);