From 720b56814204aec44521cd687d1644786e001070 Mon Sep 17 00:00:00 2001
From: sparky4 <sparky4@cock.li>
Date: Mon, 4 Apr 2016 16:40:42 -0500
Subject: [PATCH] horizintal? ^^

---
 src/lib/modex16.c | 46 ++++++++++++++++++++++++++++++++++++----------
 src/lib/modex16.h |  2 +-
 2 files changed, 37 insertions(+), 11 deletions(-)

diff --git a/src/lib/modex16.c b/src/lib/modex16.c
index cb4c5312..0d106037 100755
--- a/src/lib/modex16.c
+++ b/src/lib/modex16.c
@@ -92,9 +92,7 @@ void modexEnter(sword vq, boolean cmem, global_game_variables_t *gv)
 	dword far*ptr=(dword far*)VGA;      /* used for faster screen clearing */
 	int CRTParmCount;
 	/* common mode X initiation stuff~ */
-	modexsetBaseXMode(gv->video.page);
-	vga_enable_256color_modex(); // VGA mode X
-	update_state_from_vga();
+	modexsetBaseXMode();
 
 	switch(vq)
 	{
@@ -112,7 +110,33 @@ void modexEnter(sword vq, boolean cmem, global_game_variables_t *gv)
 			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; /* CRTC[0]             -5 */
+			cm.horizontal_display_end=0x4f; /* CRTC[1]       -1 */
+			cm.horizontal_blank_start=0x50; /* CRTC[2] */
+			cm.horizontal_blank_end=0x82;   /* 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 = 525;
 			cm.vertical_start_retrace = 0x1EA;
 			cm.vertical_end_retrace = 0x1EC;
@@ -190,8 +214,8 @@ void modexEnter(sword vq, boolean cmem, 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
@@ -199,23 +223,24 @@ 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);
 
+	vga_enable_256color_modex();
+
 	/* disable chain4 mode */
-	outpw(SC_INDEX, 0x0604);
+	//outpw(SC_INDEX, 0x0604);
 
 	/* synchronous reset while setting Misc Output */
-	outpw(SC_INDEX, 0x0100);
+	//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);
+	//outpw(SC_INDEX, 0x0300);
 
 	/* reprogram the CRT controller */
 	outp(CRTC_INDEX, 0x11); /* VSync End reg contains register write prot */
@@ -223,6 +248,7 @@ modexsetBaseXMode(page_t *page)
 //	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 */
+	update_state_from_vga();
 }
 
 page_t
diff --git a/src/lib/modex16.h b/src/lib/modex16.h
index 312912c6..fff256c3 100755
--- a/src/lib/modex16.h
+++ b/src/lib/modex16.h
@@ -91,7 +91,7 @@ void VGAmodeX(sword vq, boolean cmem, global_game_variables_t *gv);
 void modexEnter(sword vq, boolean cmem, global_game_variables_t *gv);
 long vgaGetMode();
 void modexLeave();
-void modexsetBaseXMode(page_t *page);
+void modexsetBaseXMode();
 page_t modexDefaultPage(page_t *p);
 page_t modexNextPage(page_t *p);
 page_t modexNextPageFlexibleSize(page_t *p, word x, word y);
-- 
2.39.5