diff options
Diffstat (limited to 'src/spec.c')
| -rw-r--r-- | src/spec.c | 45 |
1 files changed, 32 insertions, 13 deletions
@@ -84,6 +84,7 @@ static Z80Byte mem[0x10000]; */ static Z80Val SCAN_CYCLES=224; static int scanline=0; +static int enable_screen=TRUE; /* GFX vars @@ -244,7 +245,7 @@ static void DumpZ80(Z80 *z80) /* ---------------------------------------- PRIVATE FUNCTIONS */ -void DrawScanline(int y) +void DrawScanlineAt(int y, int sline) { int aline; int f,r; @@ -253,7 +254,7 @@ void DrawScanline(int y) Z80Byte b; Z80Byte att; - aline=scanline-TOPL; + aline=sline-TOPL; GFXHLine(0,GFX_WIDTH-1,y,coltable[border].col); @@ -284,7 +285,7 @@ void DrawScanline(int y) } for(r=0,b=*scr++;r<8;r++) - if (b&(1<<(8-r))) + if (b&(1<<(7-r))) GFXFastPlot(f*8+r+OFF_X,y,coltable[ink].col); else GFXFastPlot(f*8+r+OFF_X,y,coltable[paper].col); @@ -294,6 +295,7 @@ void DrawScanline(int y) } } +#define DrawScanline(y) DrawScanlineAt(y,scanline) static void RomPatch(void) { @@ -403,15 +405,18 @@ static int CheckTimers(Z80 *z80, Z80Val val) Z80Interrupt(z80,0xff); - GFXEndFrame(TRUE); - GFXStartFrame(); + if (enable_screen) + { + GFXEndFrame(TRUE); + GFXStartFrame(); + } } /* Draw scanline */ y=scanline-TOPL+OFF_Y; - if (y>=0 && y<GFX_HEIGHT) + if (y>=0 && y<GFX_HEIGHT && enable_screen) DrawScanline(y); /* TODO: Process sound emulation */ @@ -546,13 +551,6 @@ Z80Word SPECReadWord(Z80 *z80, Z80Word addr) void SPECWriteWord(Z80 *z80, Z80Word addr, Z80Word val) { - if (addr==0xff4e && val==0) - { - Z80State s; - Z80GetState(z80,&s); - Debug("Wrote %4.4x to %4.4x @%4.4x\n",val,addr,s.PC); - } - if (addr>=ROMLEN) mem[addr]=val&0xff; @@ -830,6 +828,27 @@ const char *SPECInfo(Z80 *z80) } +void SPECEnableScreen(int enable) +{ + enable_screen=enable; +} + + +void SPECShowScreen(void) +{ + int f; + int y; + + for(f=0;f<TOTL;f++) + { + y=f-TOPL+OFF_Y; + + if (y>=0 && y<GFX_HEIGHT) + DrawScanlineAt(y,f); + } +} + + void SPECReset(Z80 *z80) { } |