Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-05-10 16:21:42 +03:00
Code Issues Actions Packages Projects Releases Wiki Activity

fix CLR and CPY operations when the copy direction is from right to left -> this fix some gfx bugs in kothello

Browse Source
This commit is contained in:
Roberto Zandona 2008-08-03 10:09:06 +00:00
parent ef65c9cce7
commit 6c3fe42bae
1 changed files with 78 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

96
src/mame/drivers/shanghai.c
View File

@ -195,7 +195,7 @@ static void docpy(int opcode,int src,int *dst,INT16 _ax,INT16 _ay)
if (opcode & 0x0800)
{
if (ay == 0) break;
else if (ay > 0)
if (_ay > 0)
{
src = (src - 384) & (HD63484_RAM_SIZE-1);
*dst = (*dst + dstep1) & (HD63484_RAM_SIZE-1);
@ -325,8 +325,9 @@ static void HD63484_command_w(UINT16 cmd)
logerror("%04x ",fifo[i]);
logerror("\n");
if (fifo[0] == 0x0400) /* ORG */
if (fifo[0] == 0x0400) { /* ORG */
org = ((fifo[1] & 0x00ff) << 12) | ((fifo[2] & 0xfff0) >> 4);
}
else if ((fifo[0] & 0xffe0) == 0x0800) /* WPR */
{
if (fifo[0] == 0x0800)
@ -359,33 +360,91 @@ logerror("unsupported register\n");
}
else if (fifo[0] == 0x5800) /* CLR */
{
rwp *= 2;
doclr(fifo[0],fifo[1],&rwp,2*fifo[2]+1,fifo[3]);
rwp /= 2;
int ax = 2*fifo[2];
rwp *= 2;
if (fifo[2] & 0x8000) { rwp += 1; ax -= 1; } else { ax += 1; }
doclr(fifo[0],fifo[1],&rwp,ax,fifo[3]);
if (fifo[2] & 0x8000) rwp -= 1;
rwp /= 2;
/*
{
int fifo2 = (int)fifo[2],fifo3 = (int)fifo[3];
if (fifo2<0) fifo2 *= -1;
if (fifo3<0) fifo3 *= -1;
rwp += ((fifo2+1)*(fifo3+1));
}
*/
}
else if ((fifo[0] & 0xfffc) == 0x5c00) /* SCLR */
{
rwp *= 2;
doclr(fifo[0],fifo[1],&rwp,2*fifo[2]+1,fifo[3]);
rwp /= 2;
int ax = 2*fifo[2];
rwp *= 2;
if (fifo[2] & 0x8000) { rwp += 1; ax -= 1; } else { ax += 1; }
doclr(fifo[0],fifo[1],&rwp,ax,fifo[3]);
if (fifo[2] & 0x8000) rwp -= 1;
rwp /= 2;
/*
{
int fifo2 = (int)fifo[2],fifo3 = (int)fifo[3];
if (fifo2<0) fifo2 *= -1;
if (fifo3<0) fifo3 *= -1;
rwp += ((fifo2+1)*(fifo3+1));
}
*/
}
else if ((fifo[0] & 0xf0ff) == 0x6000) /* CPY */
{
int src;
int src,ax;
src = ((fifo[1] & 0x00ff) << 12) | ((fifo[2] & 0xfff0) >> 4);
rwp *= 2;
docpy(fifo[0],2*src,&rwp,2*fifo[3]+1,fifo[4]);
rwp /= 2;
ax = 2*fifo[3];
src = (((fifo[1] & 0x00ff) << 12) | ((fifo[2] & 0xfff0) >> 4))*2;
rwp *= 2;
if (fifo[3] & 0x8000) { rwp += 1; src += 1; ax -= 1; } else { ax += 1; }
docpy(fifo[0],src,&rwp,ax,fifo[4]);
if (fifo[3] & 0x8000) rwp -= 1;
rwp /= 2;
/*
{
int fifo2 = (int)fifo[2],fifo3 = (int)fifo[3];
if (fifo2<0) fifo2 *= -1;
if (fifo3<0) fifo3 *= -1;
rwp += ((fifo2+1)*(fifo3+1));
}
*/
}
else if ((fifo[0] & 0xf0fc) == 0x7000) /* SCPY */
{
int src;
int src,ax;
src = ((fifo[1] & 0x00ff) << 12) | ((fifo[2] & 0xfff0) >> 4);
rwp *= 2;
docpy(fifo[0],2*src,&rwp,2*fifo[3]+1,fifo[4]);
rwp /= 2;
ax = 2*fifo[3];
src = (((fifo[1] & 0x00ff) << 12) | ((fifo[2] & 0xfff0) >> 4))*2;
rwp *= 2;
if (fifo[3] & 0x8000) { rwp += 1; src += 1; ax -= 1; } else { ax += 1; }
docpy(fifo[0],src,&rwp,ax,fifo[4]);
if (fifo[3] & 0x8000) rwp -= 1;
rwp /= 2;
/*
{
int fifo2 = (int)fifo[2],fifo3 = (int)fifo[3];
if (fifo2<0) fifo2 *= -1;
if (fifo3<0) fifo3 *= -1;
rwp += ((fifo2+1)*(fifo3+1));
}
*/
}
else if (fifo[0] == 0x8000) /* AMOVE */
{
@ -595,6 +654,7 @@ rwp /= 2;
pcx = fifo[1];
pcy = fifo[2];
src = (2*org + pcx - pcy * 384) & (HD63484_RAM_SIZE-1);
dst = (2*org + cpx - cpy * 384) & (HD63484_RAM_SIZE-1);