Preparation for monochrome video selection

src/include/86box/vid_mda.h

@@ -26,10 +26,15 @@ typedef struct mda_t
         int dispon, blink;
         int vsynctime;
         int vadj;
+        int monitor_index;
+        int prev_monitor_index;
 
         uint8_t *vram;
 } mda_t;
 
+#define VIDEO_MONITOR_PROLOGUE() { mda->prev_monitor_index = monitor_index_global; monitor_index_global = mda->monitor_index; }
+#define VIDEO_MONITOR_EPILOGUE() { monitor_index_global = mda->prev_monitor_index; }
+
 void    mda_init(mda_t *mda);
 void 	mda_setcol(int chr, int blink, int fg, uint8_t cga_ink);
 void    mda_out(uint16_t addr, uint8_t val, void *p);

src/include/86box/video.h

@@ -223,6 +223,7 @@ extern int 	video_is_mda(void);
 extern int 	video_is_cga(void);
 extern int 	video_is_ega_vga(void);
 extern void	video_inform(int type, const video_timings_t *ptr);
+extern void	video_inform_monitor(int type, const video_timings_t *ptr, int monitor_index);
 extern int	video_get_type(void);
 extern int	video_get_type_monitor(int monitor_index);
 

src/video/vid_mda.c

@@ -110,6 +110,8 @@ void mda_poll(void *p)
         uint8_t chr, attr;
         int oldsc;
         int blink;
+
+        VIDEO_MONITOR_PROLOGUE()
         if (!mda->linepos)
         {
 		timer_advance_u64(&mda->timer, mda->dispofftime);
@@ -252,6 +254,7 @@ void mda_poll(void *p)
                         mda->con = 1;
                 }
         }
+        VIDEO_MONITOR_EPILOGUE();
 }
 
 void mda_init(mda_t *mda)
@@ -278,6 +281,7 @@ void mda_init(mda_t *mda)
         mdacols[0x88][0][1] = mdacols[0x88][1][1] = 16;
 
 	overscan_x = overscan_y = 0;
+    mda->monitor_index = monitor_index_global;
 
         cga_palette = device_get_config_int("rgb_type") << 1;
 	if (cga_palette > 6)

src/video/vid_table.c

@@ -40,6 +40,7 @@
 
 typedef struct {
     const device_t    *device;
+    int flags;
 } VIDEO_CARD;
 
 
@@ -293,16 +294,18 @@ video_prepare(void)
     fontdatksc5601 = NULL;
     }
 
-    /* Reset the CGA palette. */
-    cga_palette = 0;
-    cgapal_rebuild();
-
     /* Reset the blend. */
     herc_blend = 0;
 
+    for (int i = 0; i < MONITORS_NUM; i++) {
+        /* Reset the CGA palette. */
+        monitors[i].mon_cga_palette = 0;
+        cgapal_rebuild_monitor(i);
+
         /* Do an inform on the default values, so that that there's some sane values initialized
            even if the device init function does not do an inform of its own. */
-    video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_default);
+        video_inform_monitor(VIDEO_FLAG_TYPE_SPECIAL, &timing_default, i);
+    }
 }