New window scrolling and fix for setting active page
Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@246
This commit is contained in:
Sjoerd van der Berg
parent
71fc0f2cf6
commit
bd5ef63d38
1 changed files with 113 additions and 156 deletions
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@ -16,7 +16,6 @@
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/* Character displaying moving functions */
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#include "dosbox.h"
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@ -25,185 +24,143 @@
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#include "inout.h"
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#include "int10.h"
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static INLINE void PLANAR4_CopyRow(VGAMODES * curmode,Bit8u cleft,Bit8u cright,Bit8u rold,Bit8u rnew,PhysPt base) {
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PhysPt src,dest;Bitu copy;
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dest=base+(curmode->twidth*rnew)*curmode->cheight+cleft;
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src=base+(curmode->twidth*rold)*curmode->cheight+cleft;
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Bitu nextline=curmode->twidth;
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/* Setup registers correctly */
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IO_Write(0x3ce,5);IO_Write(0x3cf,1); /* Memory transfer mode */
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IO_Write(0x3c4,2);IO_Write(0x3c5,0xf); /* Enable all Write planes */
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/* Do some copying */
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Bitu rowsize=(cright-cleft);
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copy=curmode->cheight;
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for (;copy>0;copy--) {
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for (Bitu x=0;x<rowsize;x++) mem_writeb(dest+x,mem_readb(src+x));
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dest+=nextline;src+=nextline;
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void INT10_ScrollDownWindow(Bit8u rul,Bit8u cul,Bit8u rlr,Bit8u clr,Bit8u nlines,Bit8u attr,Bit8u page) {
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}
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/* Restore registers */
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IO_Write(0x3ce,5);IO_Write(0x3cf,0); /* Normal transfer mode */
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}
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// Bit8u mode;
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Bit16u fill=( (attr << 8) | ' ');
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static INLINE void TEXT_CopyRow(VGAMODES * curmode,Bit8u cleft,Bit8u cright,Bit8u rold,Bit8u rnew,PhysPt base) {
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PhysPt src,dest;
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src=base+(rold*curmode->twidth+cleft)*2;
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dest=base+(rnew*curmode->twidth+cleft)*2;
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MEM_BlockCopy(dest,src,(cright-cleft)*2);
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}
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static INLINE void PLANAR4_FillRow(VGAMODES * curmode,Bit8u cleft,Bit8u cright,Bit8u row,PhysPt base,Bit8u attr) {
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/* Set Bitmask / Color / Full Set Reset */
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IO_Write(0x3ce,0x8);IO_Write(0x3cf,0xff);
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IO_Write(0x3ce,0x0);IO_Write(0x3cf,attr);
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IO_Write(0x3ce,0x1);IO_Write(0x3cf,0xf);
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IO_Write(0x3ce,5);IO_Write(0x3cf,0); /* Normal transfer mode */
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/* Write some bytes */
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PhysPt dest;
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dest=base+(curmode->twidth*row)*curmode->cheight+cleft;
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Bitu nextline=curmode->twidth;
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Bitu copy=curmode->cheight; Bitu rowsize=(cright-cleft);
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for (;copy>0;copy--) {
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for (Bitu x=0;x<rowsize;x++) mem_writeb(dest+x,0xff);
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dest+=nextline;
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}
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}
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static INLINE void TEXT_FillRow(VGAMODES * curmode,Bit8u cleft,Bit8u cright,Bit8u row,PhysPt base,Bit8u attr) {
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/* Do some filing */
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PhysPt dest;
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dest=base+(row*curmode->twidth+cleft)*2;
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Bit16u fill=(attr<<8)+' ';
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for (Bit8u x=0;x<(cright-cleft);x++) {
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mem_writew(dest,fill);
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dest+=2;
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}
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}
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void INT10_ScrollWindow(Bit8u rul,Bit8u cul,Bit8u rlr,Bit8u clr,Bit8s nlines,Bit8u attr,Bit8u page) {
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/* Do some range checking */
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BIOS_NCOLS;BIOS_NROWS;
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if(rul>rlr) return;
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if(cul>clr) return;
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if(rlr>=nrows) rlr=(Bit8u)nrows-1;
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if(clr>=ncols) clr=(Bit8u)ncols-1;
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// Get the current page
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clr++;
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/* Get the correct page */
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if(page==0xFF) page=real_readb(BIOSMEM_SEG,BIOSMEM_CURRENT_PAGE);
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VGAMODES * curmode=GetCurrentMode();
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PhysPt base=PhysMake(curmode->sstart,curmode->slength*page);
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/* Get this from active video mode */
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Bit16u textseg=0xb800;
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PhysPt start=PhysMake(textseg,ncols*nrows*2*page);
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/* See how much lines need to be copies */
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Bit8u start,end;Bits next;
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/* Copy some lines */
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if (nlines>0) {
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start=rlr-nlines+1;
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end=cul;
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next=-1;
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} else if (nlines<0) {
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start=cul-nlines-1;
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end=clr;
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next=1;
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} else {
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nlines=rlr-rul+1;
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goto filling;
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}
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do {
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start+=next;
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switch (curmode->memmodel) {
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case MTEXT:
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case CTEXT:
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TEXT_CopyRow(curmode,cul,clr,start,start+nlines,base);break;
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case PLANAR4:
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PLANAR4_CopyRow(curmode,cul,clr,start,start+nlines,base);break;
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Bit32u dcol=clr-cul+1;
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Bit32u drow=rlr-rul+1;
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Bit32u tocopy;
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PhysPt dest=start+((rlr*ncols)+cul)*2;
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PhysPt src = 0;/* for gcc */
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if (nlines==0) {
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nlines=(Bit8u)nrows;
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}
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if (nlines>=drow) {
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tocopy=0;
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} else {
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tocopy=drow-nlines;
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src=start+(((rul+tocopy-1)*ncols)+cul)*2;
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}
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for (Bit32u y=0;y<drow;y++) {
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if (tocopy) {
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for(Bit32u x=0;x<dcol;x++) {
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mem_writew(dest,mem_readw(src));
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src+=2;
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dest+=2;
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}
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src-=(ncols+dcol)*2;
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dest-=(ncols+dcol)*2;
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tocopy--;
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} else {
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for(Bit32u x=0;x<dcol;x++) {
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mem_writew(dest,fill);
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dest+=2;
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}
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dest-=(ncols+dcol)*2;
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}
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}
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} while (start!=end);
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/* Fill some lines */
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filling:
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if (nlines>0) {
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start=rul;
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} else {
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nlines-=nlines;
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start=rlr-nlines;
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}
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for (;nlines>0;nlines--) {
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switch (curmode->memmodel) {
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case MTEXT:
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case CTEXT:
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TEXT_FillRow(curmode,cul,clr,start,base,attr);break;
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case PLANAR4:
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PLANAR4_FillRow(curmode,cul,clr,start,base,attr);break;
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}
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start++;
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}
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}
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void INT10_ScrollUpWindow(Bit8u rul,Bit8u cul,Bit8u rlr,Bit8u clr,Bit8u nlines,Bit8u attr,Bit8u page) {
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// Bit8u mode;
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Bit16u fill=( (attr << 8) | ' ');
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BIOS_NCOLS;BIOS_NROWS;
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if(rlr>nrows) rlr=(Bit8u)nrows;
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if(clr>ncols) clr=(Bit8u)ncols;
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if(rul>rlr) return;
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if(cul>clr) return;
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VGAMODES * curmode=GetCurrentMode();
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switch (curmode->memmodel) {
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case CGA:
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{
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if (nlines==0) {
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/* Clear Screen that we can */
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PhysPt dest=PhysMake(0xb800,0);
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for (Bit32u tel=0;tel<0x4000;tel++) {
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mem_writew(dest,0x0000);
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dest+=2;
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}
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return;
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}
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LOG_WARN("INT10:Scroll in CGA Mode");
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}
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case MTEXT:
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case CTEXT:
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break;
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default:
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LOG_ERROR("INT10:Scroll on non supported graphics mode");
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}
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// Get the current page
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if(page==0xFF) page=real_readb(BIOSMEM_SEG,BIOSMEM_CURRENT_PAGE);
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/* Get this from active video mode */
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Bit16u textseg=0xb800;
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PhysPt start=PhysMake(textseg,ncols*nrows*2*page);
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Bit32u dcol=clr-cul+1;
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Bit32u drow=rlr-rul+1;
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Bit32u tocopy;
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PhysPt dest=start+((rul*ncols)+cul)*2;
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PhysPt src;
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if (nlines==0) {
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nlines=(Bit8u)nrows;
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}
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if (nlines>=drow) {
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tocopy=0;
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} else {
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tocopy=drow-nlines;
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src=start+(((rul+nlines)*ncols)+cul)*2;
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}
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for (Bit32u y=0;y<drow;y++) {
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if (tocopy) {
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for (Bit32u x=0;x<dcol;x++) {
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mem_writew(dest,mem_readw(src));
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src+=2;
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dest+=2;
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}
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src+=(ncols-dcol)*2;
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dest+=(ncols-dcol)*2;
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tocopy--;
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} else {
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for(Bit32u x=0;x<dcol;x++) {
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mem_writew(dest,fill);
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dest+=2;
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}
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dest+=(ncols-dcol)*2;
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}
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}
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}
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void INT10_SetActivePage(Bit8u page) {
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Bit16u mem_address;
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Bit16u vid_address;
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Bit8u cur_col=0 ,cur_row=0 ;
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VGAMODES * curmode=GetCurrentMode();
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if (curmode==0) return;
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if (page>7) return;
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switch (curmode->memmodel) {
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case MTEXT:
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case CTEXT:{
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BIOS_NCOLS;BIOS_NROWS;
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cur_col=CURSOR_POS_COL(page);
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cur_row=CURSOR_POS_ROW(page);
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vid_address=SCREEN_IO_START(ncols,nrows,page);
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mem_address=SCREEN_MEM_START(ncols,nrows,page);
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break;
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}
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case CGA:{
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vid_address=0;
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mem_address=0;
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break;
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}
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case PLANAR4:{
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mem_address=0;
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vid_address=((((curmode->sheight*curmode->swidth)>>3)|0xff)+1)*page;
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break;
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}
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default:
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vid_address=0;
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mem_address=0;
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break;
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}
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// Calculate the address knowing nbcols nbrows and page num
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mem_address=page*curmode->slength;
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/* Write the new page start */
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real_writew(BIOSMEM_SEG,BIOSMEM_CURRENT_START,mem_address);
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if (curmode->svgamode<8) mem_address>>=1;
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// CRTC regs 0x0c and 0x0d
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/* Write the new start address in vgahardware */
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IO_Write(real_readw(BIOSMEM_SEG,BIOSMEM_CRTC_ADDRESS),0x0c);
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IO_Write(real_readw(BIOSMEM_SEG,BIOSMEM_CRTC_ADDRESS)+1,(vid_address&0xff00)>>8);
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IO_Write(real_readw(BIOSMEM_SEG,BIOSMEM_CRTC_ADDRESS)+1,(mem_address&0xff00)>>8);
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IO_Write(real_readw(BIOSMEM_SEG,BIOSMEM_CRTC_ADDRESS),0x0d);
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IO_Write(real_readw(BIOSMEM_SEG,BIOSMEM_CRTC_ADDRESS)+1,vid_address&0x00ff);
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IO_Write(real_readw(BIOSMEM_SEG,BIOSMEM_CRTC_ADDRESS)+1,mem_address&0x00ff);
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// And change the BIOS page
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real_writeb(BIOSMEM_SEG,BIOSMEM_CURRENT_PAGE,page);
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@ -362,7 +319,7 @@ void INT10_TeletypeOutput(Bit8u chr,Bit8u attr,bool showattr, Bit8u page) {
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}
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// Do we need to scroll ?
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if(cur_row==nrows) {
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INT10_ScrollUpWindow(0,0,nrows-1,ncols-1,1,0x07,page);
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INT10_ScrollWindow(0,0,nrows-1,ncols-1,-1,0x07,page);
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cur_row--;
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}
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// Set the cursor for the page
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