sz81 Code

--- a
+++ b/sz81/common.h
@@ -0,0 +1,104 @@
+/* z81/xz81, Linux console and X ZX81/ZX80 emulators.
+ * Copyright (C) 1994 Ian Collier. z81 changes (C) 1995-2001 Russell Marks.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *
+ * common.h - prototypes etc. for common.c.
+ */
+
+/* And first, some display constants, as this seems the least
+ * horrible place to put them.
+ *
+ * NB: *everything* horizontal here must be exactly divisible by 8.
+ */
+
+/* full internal image with overscan (but not hsync/vsync areas) */
+#define ZX_VID_MARGIN		55
+#define ZX_VID_HMARGIN		(8*8)
+#define ZX_VID_FULLWIDTH	(2*ZX_VID_HMARGIN+32*8)	/* sic */
+#define ZX_VID_FULLHEIGHT	(2*ZX_VID_MARGIN+192)
+
+/* ahem :-) */
+#define FUDGE_FACTOR		(3*8)
+
+/* X image */
+#if 0
+/* for testing QS Defender ;-) - I might want to add a
+ * command-line option to show the whole overscan area
+ * eventually...
+ */
+#define ZX_VID_X_XOFS		0
+#define ZX_VID_X_YOFS		0
+#define ZX_VID_X_WIDTH		ZX_VID_FULLWIDTH
+#define ZX_VID_X_HEIGHT		ZX_VID_FULLHEIGHT
+#else
+#define ZX_VID_X_XOFS		(5*8-FUDGE_FACTOR)
+#define ZX_VID_X_YOFS		35
+#define ZX_VID_X_WIDTH		((32+3*2)*8)
+#define ZX_VID_X_HEIGHT		(192+20*2)
+#endif
+
+/* svgalib image */
+#define ZX_VID_VGA_XOFS		(4*8-FUDGE_FACTOR)
+#define ZX_VID_VGA_YOFS		51
+#define ZX_VID_VGA_WIDTH	((32+4*2)*8)
+#define ZX_VID_VGA_HEIGHT	(192+4*2)
+
+
+/* AY board types */
+#define AY_TYPE_NONE		0
+#define AY_TYPE_QUICKSILVA	1
+#define AY_TYPE_ZONX		2
+
+
+extern unsigned char mem[];
+extern unsigned char *memptr[64];
+extern int memattr[64];
+extern unsigned char keyports[9];
+extern unsigned long tstates,tsmax;
+extern int help,sound,sound_vsync,sound_ay,sound_ay_type,vsync_visuals;
+extern int invert_screen;
+
+extern int interrupted;
+extern int nmigen,hsyncgen,vsync;
+extern int taguladisp;
+extern int autoload;
+extern int scrn_freq;
+extern int fakedispx,fakedispy;
+
+extern int refresh_screen;
+extern int zx80;
+extern int ignore_esc;
+
+
+extern void sighandler(int a);
+extern char *libdir(char *file);
+extern void startsigsandtimer();
+extern void exit_program(void);
+extern void initmem();
+extern void loadhelp(void);
+extern void zxpopen(void);
+extern void zxpclose(void);
+extern unsigned int in(int h,int l);
+extern unsigned int out(int h,int l,int a);
+extern void do_interrupt();
+extern void save_p(int a);
+extern void load_p(int a);
+extern void update_kybd();
+extern void do_interrupt();
+extern void reset81();
+extern void parseoptions(int argc,char *argv[]);
+extern void frame_pause(void);