X-Git-Url: http://4ch.mooo.com/gitweb/?a=blobdiff_plain;ds=inline;f=src%2Flib%2Fmodex16.c;h=0aa6904b1daa289ca79646d456cb9a4f5122ef17;hb=900779b8b2ce8c05c3df897d3ae3fa5d8cb414c6;hp=b6e12c1e83ce3ebd169cb2678dca9ca7ae43f506;hpb=5d3247c2c17bc8133d3dbae26cadb0268e964710;p=16.git

diff --git a/src/lib/modex16.c b/src/lib/modex16.c
index b6e12c1e..0aa6904b 100755
--- a/src/lib/modex16.c
+++ b/src/lib/modex16.c
@@ -35,7 +35,7 @@ static byte tmppal[PAL_SIZE];
 // setvideo() - This function Manages the video modes												//
 //																														//
 /////////////////////////////////////////////////////////////////////////////
-void VGAmodeX(sword vq, boolean cm, global_game_variables_t *gv)
+void VGAmodeX(sword vq, boolean cmem, global_game_variables_t *gv)
 {
 	union REGS in, out;
 
@@ -54,7 +54,7 @@ void VGAmodeX(sword vq, boolean cm, global_game_variables_t *gv)
 			//int86(0x10, &in, &out);
 			gv->video.old_mode = vgaGetMode();//out.h.al;
 			// enter mode
-			modexEnter(vq, cm, gv);
+			modexEnter(vq, cmem, gv);
 		break;
 	}
 }
@@ -86,25 +86,68 @@ vgaGetMode()
 }
 
 /* -========================= Entry  Points ==========================- */
-void modexEnter(sword vq, boolean cm, global_game_variables_t *gv)
+void modexEnter(sword vq, boolean cmem, global_game_variables_t *gv)
 {
 	word i;
 	dword far*ptr=(dword far*)VGA;      /* used for faster screen clearing */
 	int CRTParmCount;
 	/* common mode X initiation stuff~ */
-	modexsetBaseXMode(gv->video.page);
+	modexsetBaseXMode();
 
 	switch(vq)
 	{
 		case 1:
-			CRTParmCount = sizeof(ModeX_320x240regs) / sizeof(ModeX_320x240regs[0]);
+			//CRTParmCount = sizeof(ModeX_320x240regs) / sizeof(ModeX_320x240regs[0]);
 			/* width and height */
-			gv->video.page[0].sw=320;
-			gv->video.page[0].sh=240;
+			gv->video.page[0].sw=vga_state.vga_width = 320; // VGA lib currently does not update this
+			gv->video.page[0].sh=vga_state.vga_height = 240; // VGA lib currently does not update this
 
 			/* send the CRTParms */
-			for(i=0; i<CRTParmCount; i++) {
+			/*for(i=0; i<CRTParmCount; i++) {
 				outpw(CRTC_INDEX, ModeX_320x240regs[i]);
+			}*/
+			{
+			struct vga_mode_params cm;
+			vga_read_crtc_mode(&cm);
+
+// 	0x5f00,		/* Horizontal total */
+// 	0x4f01,		/* horizontal display enable end */
+// 	0x5002,		/* Start horizontal blanking */
+// 	0x8203,		/* End horizontal blanking */
+// 	0x5404,		/* Start horizontal retrace */
+// 	0x8005,		/* End horizontal retrace */
+// 	0x0d06,		 /* vertical total */
+// 	0x3e07,		 /* overflow (bit 8 of vertical counts) */
+// 	0x4109,		 /* cell height (2 to double-scan */
+// 	0xea10,		 /* v sync start */
+// 	0xac11,		 /* v sync end and protect cr0-cr7 */
+// 	0xdf12,		 /* vertical displayed */
+// 	0x2813,		/* offset/logical width */
+// 	0x0014,		 /* turn off dword mode */
+// 	0xe715,		 /* v blank start */
+// 	0x0616,		 /* v blank end */
+// 	0xe317		  /* turn on byte mode */
+
+			// 320x240 mode 60Hz
+			cm.horizontal_total=0x5f + 5; /* CRTC[0]             -5 */
+			cm.horizontal_display_end=0x4f + 1; /* CRTC[1]       -1 */
+			cm.horizontal_blank_start=0x50 + 1; /* CRTC[2] */
+			cm.horizontal_blank_end=0x82 + 1;   /* CRTC[3] bit 0-4 & CRTC[5] bit 7 */
+			cm.horizontal_start_retrace=0x54;/* CRTC[4] */
+			cm.horizontal_end_retrace=0x80;	/* CRTC[5] bit 0-4 */
+			//cm.horizontal_start_delay_after_total=0x3e; /* CRTC[3] bit 5-6 */
+			//cm.horizontal_start_delay_after_retrace=0x41; /* CRTC[5] bit 5-6 */
+			cm.vertical_total = 0x20D + 2;
+			cm.vertical_start_retrace = 0x1EA;
+			cm.vertical_end_retrace = 0x1EC;
+			cm.vertical_display_end = 480;
+			cm.vertical_blank_start = 0x1E7 + 1;
+			cm.vertical_blank_end = 0x206 + 1;
+			cm.clock_select = 0; /* misc register = 0xE3  25MHz */
+			cm.vsync_neg = 1;
+			cm.hsync_neg = 1;
+
+			vga_write_crtc_mode(&cm,0);
 			}
 		break;
 		case 2:
@@ -154,14 +197,12 @@ void modexEnter(sword vq, boolean cm, global_game_variables_t *gv)
 	}
 
 	/* clear video memory */
-	switch (cm)
+	switch (cmem)
 	{
 		case 1:
 		/* clear video memory */
-		outpw(SC_INDEX, 0x0f02);
-		for(i=0; i<0x8000; i++) {
-			ptr[i] = 0x0000;
-		}
+		vga_write_sequencer(2/*map mask register*/,0xf/*all 4 planes*/);
+		for(i=0; i<0x8000; i++) ptr[i] = 0x0000;
 		break;
 	}
 	gv->video.page[0].tilesw = gv->video.page[0].sw/TILEWH;
@@ -174,8 +215,8 @@ void modexEnter(sword vq, boolean cm, global_game_variables_t *gv)
 
 void
 modexLeave() {
-    /* TODO restore original mode and palette */
-    vgaSetMode(TEXT_MODE);
+	/* TODO restore original mode and palette */
+	vgaSetMode(TEXT_MODE);
 }
 
 //    setBaseXMode() does the initialization to make the VGA ready to
@@ -183,30 +224,12 @@ modexLeave() {
 //    involves enabling writes to index 0 to 7 of the CRT controller (port
 //    0x3D4), by clearing the most significant bit (bit 7) of index 0x11.
 void
-modexsetBaseXMode(page_t *page)
+modexsetBaseXMode()
 {
-	word temp;
 	/* TODO save current video mode and palette */
 	vgaSetMode(VGA_256_COLOR_MODE);
-
-	/* disable chain4 mode */
-	outpw(SC_INDEX, 0x0604);
-
-	/* synchronous reset while setting Misc Output */
-	outpw(SC_INDEX, 0x0100);
-
-	/* select 25 MHz dot clock & 60 Hz scanning rate */
-	outp(MISC_OUTPUT, 0xe3);
-
-	/* undo reset (restart sequencer) */
-	outpw(SC_INDEX, 0x0300);
-
-	/* reprogram the CRT controller */
-	outp(CRTC_INDEX, 0x11); /* VSync End reg contains register write prot */
-//	temp = inp(CRTC_DATA) & 0x7F;
-//	outp(CRTC_INDEX, 0x11);
-	outp(CRTC_DATA, 0x7f);  /* get current write protect on varios regs */
-//	outp(CRTC_DATA, temp);  /* get current write protect on varios regs */
+	vga_enable_256color_modex();
+	update_state_from_vga();
 }
 
 page_t