The Trigem 286M is now correctly initialized without IDE, fixes non-IDE hard disk controllers (eg. MFM);

A small change to how the video font array resetting is done, to correctly allow for internal Korean graphics cards, fixes the emulator segfaulting in some cases with the Trigem 286M and the internal Korean ET4000AX.

src/machine/m_at_headland.c

@@ -533,7 +533,10 @@ headland_init(void)
 void
 machine_at_headland_init(const machine_t *model)
 {
-    machine_at_common_ide_init(model);
+    if (romset == ROM_TG286M)
+	machine_at_common_init(model);
+    else
+	machine_at_common_ide_init(model);
 
     device_add(&keyboard_at_ami_device);
     device_add(&fdc_at_device);

src/pc.c

@@ -8,7 +8,7 @@
  *
  *		Main emulator module where most things are controlled.
  *
- * Version:	@(#)pc.c	1.0.74	2018/08/04
+ * Version:	@(#)pc.c	1.0.75	2018/08/16
  *
  * Authors:	Sarah Walker, <http://pcem-emulator.co.uk/>
  *		Miran Grca, <mgrca8@gmail.com>
@@ -766,6 +766,7 @@ pc_reset_hard_init(void)
     scsi_disk_hard_reset();
 
     /* Initialize the actual machine and its basic modules. */
+    video_font_reset();	/* Reset (deallocate) the video font arrays. */
     machine_init();
 
     fdd_reset();

src/video/vid_table.c

@@ -8,7 +8,7 @@
  *
  *		Define all known video cards.
  *
- * Version:	@(#)vid_table.c	1.0.32	2018/08/16
+ * Version:	@(#)vid_table.c	1.0.33	2018/08/16
  *
  * Authors:	Miran Grca, <mgrca8@gmail.com>
  *		Fred N. van Kempen, <decwiz@yahoo.com>
@@ -196,6 +196,16 @@ vid_table_log(const char *fmt, ...)
 }
 
 
+void
+video_font_reset(void)
+{
+    if (fontdatksc5601) {
+	free(fontdatksc5601);
+	fontdatksc5601 = NULL;
+    }
+}
+
+
 void
 video_reset(int card)
 {
@@ -206,11 +216,6 @@ video_reset(int card)
     cga_palette = 0;
     cgapal_rebuild();
 
-    if (fontdatksc5601) {
-	free(fontdatksc5601);
-	fontdatksc5601 = NULL;
-    }
-
     /* Do not initialize internal cards here. */
     if (!(card == GFX_NONE) && \
 	!(card == GFX_INTERNAL) && !machines[machine].fixed_gfxcard) {

src/video/video.c

@@ -40,7 +40,7 @@
  *		W = 3 bus clocks
  *		L = 4 bus clocks
  *
- * Version:	@(#)video.c	1.0.23	2018/05/25
+ * Version:	@(#)video.c	1.0.24	2018/08/16
  *
  * Authors:	Sarah Walker, <http://pcem-emulator.co.uk/>
  *		Miran Grca, <mgrca8@gmail.com>
@@ -79,8 +79,8 @@ uint8_t		fontdat[2048][8];		/* IBM CGA font */
 uint8_t		fontdatm[2048][16];		/* IBM MDA font */
 uint8_t		fontdatw[512][32];		/* Wyse700 font */
 uint8_t		fontdat8x12[256][16];		/* MDSI Genius font */
-dbcs_font_t	*fontdatksc5601;		/* Korean KSC-5601 font */
-dbcs_font_t	*fontdatksc5601_user;		/* Korean KSC-5601 user defined font */
+dbcs_font_t	*fontdatksc5601 = NULL;		/* Korean KSC-5601 font */
+dbcs_font_t	*fontdatksc5601_user = NULL;	/* Korean KSC-5601 user defined font */
 uint32_t	pal_lookup[256];
 int		xsize = 1,
 		ysize = 1;

src/video/video.h

@@ -243,6 +243,7 @@ extern void	updatewindowsize(int x, int y);
 
 extern void	video_init(void);
 extern void	video_close(void);
+extern void	video_font_reset(void);
 extern void	video_reset(int card);
 extern uint8_t	video_force_resize_get(void);
 extern void	video_force_resize_set(uint8_t res);