Some video related cleanups

src/include/86box/vid_hercules.h

@@ -0,0 +1,61 @@
+/*
+ * 86Box	A hypervisor and IBM PC system emulator that specializes in
+ *		running old operating systems and software designed for IBM
+ *		PC systems and compatibles from 1981 through fairly recent
+ *		system designs based on the PCI bus.
+ *
+ *		This file is part of the 86Box distribution.
+ *
+ *		Emulation of the Hercules graphics cards.
+ *
+ *
+ *
+ * Author:	Sarah Walker, <http://pcem-emulator.co.uk/>
+ *		Miran Grca, <mgrca8@gmail.com>
+ *		Copyright 2008-2019 Sarah Walker.
+ *		Copyright 2016-2019 Miran Grca.
+ *		Copyright 2021 Jasmine Iwanek.
+ */
+#ifndef VIDEO_HERCULES_H
+# define VIDEO_HERCULES_H
+
+typedef struct {
+    mem_mapping_t	mapping;
+
+    uint8_t	crtc[32], charbuffer[4096];
+    int		crtcreg;
+
+    uint8_t	ctrl,
+		ctrl2,
+		stat;
+
+    uint64_t	dispontime,
+		dispofftime;
+    pc_timer_t	timer;
+
+    int		firstline,
+		lastline;
+
+    int		linepos,
+		displine;
+    int		vc,
+		sc;
+    uint16_t	ma,
+		maback;
+    int		con, coff,
+		cursoron;
+    int		dispon,
+		blink;
+    int	vsynctime;
+    int		vadj;
+
+    int		lp_ff;
+
+    int		cols[256][2][2];
+
+    uint8_t	*vram;
+} hercules_t;
+
+static void *hercules_init(const device_t *info);
+
+#endif	/*VIDEO_HERCULES_H*/