X-Git-Url: http://4ch.mooo.com/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fmodex16.c;h=6a4fbe1c5f819bfa01246b98a5d9438435143ad3;hb=9f7214fd9c7455cdde58349d0be24c4bd0343ab5;hp=6f8d64fa64a8810526e373e10e6a203cc9ff9849;hpb=e7560148aa2da2b398dfeb8c5ee7e49bf9deff0b;p=16.git

diff --git a/src/lib/modex16.c b/src/lib/modex16.c
index 6f8d64fa..6a4fbe1c 100755
--- a/src/lib/modex16.c
+++ b/src/lib/modex16.c
@@ -115,6 +115,10 @@ void modexEnter(sword vq, boolean cmem, global_game_variables_t *gv)
 			cm.clock_select = 0; /* misc register = 0xE3  25MHz */
 			cm.vsync_neg = 1;
 			cm.hsync_neg = 1;
+
+			cm.scanline_div2=1;	/* CRTC[0x17] bit 2 */
+			cm.scan_double=0;		/* CRTC[0x09] bit 7 */
+			cm.max_scanline=4;		/* CRTC[0x09] bit 4-0 */
 			break;
 		case 2: // TODO: 160x120 according to ModeX_160x120regs
 			return;
@@ -1045,3 +1049,30 @@ modexWaitBorder() {
 	// spin
     }
 }*/
+
+void bios_cls() {
+	VGA_ALPHA_PTR ap;
+	VGA_RAM_PTR rp;
+	unsigned char m;
+
+	m = int10_getmode();
+	if ((rp=vga_state.vga_graphics_ram) != NULL && !(m <= 3 || m == 7)) {
+		unsigned int i,im;
+
+		im = (FP_SEG(vga_state.vga_graphics_ram_fence) - FP_SEG(vga_state.vga_graphics_ram));
+		if (im > 0xFFE) im = 0xFFE;
+		im <<= 4;
+		for (i=0;i < im;i++) vga_state.vga_graphics_ram[i] = 0;
+	}
+	else if ((ap=vga_state.vga_alpha_ram) != NULL) {
+		unsigned int i,im;
+
+		im = (FP_SEG(vga_state.vga_alpha_ram_fence) - FP_SEG(vga_state.vga_alpha_ram));
+		if (im > 0x7FE) im = 0x7FE;
+		im <<= 4 - 1; /* because ptr is type uint16_t */
+		for (i=0;i < im;i++) vga_state.vga_alpha_ram[i] = 0x0720;
+	}
+	else {
+		printf("WARNING: bios cls no ptr\n");
+	}
+}