Added files and got initial support working. ZX81 display needed.

1 files changed, 82 insertions, 0 deletions

diff --git a/include/zx81.h b/include/zx81.h
new file mode 100644
index 0000000..770a132
--- /dev/null
+++ b/include/zx81.h
@@ -0,0 +1,82 @@
+/*
+
+    3ds81 - Nintendo 3DS ZX81 emulator
+
+    Copyright (C) 2021  Ian Cowburn (ianc@noddybox.co.uk)
+
+    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 3 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, see <http://www.gnu.org/licenses/>
+
+    -------------------------------------------------------------------------
+
+    Provides the emulation for the ZX81
+
+*/
+
+#ifndef DS81_ZX81_H
+#define DS81_ZX81_H
+
+#include <stdio.h>
+
+#include "framebuffer.h"
+#include "z80.h"
+#include "keyboard.h"
+
+
+/* Initialise the ZX81
+*/
+void	ZX81Init(Z80 *z80);
+
+/* Render the display
+*/
+void    ZX81RenderDisplay(Framebuffer *fb);
+
+/* Handle keypresses
+*/
+void	ZX81HandleKey(SoftKey k, int is_pressed);
+
+/* Enable fopen() loading of tape files
+*/
+void	ZX81EnableFileSystem(int enable);
+
+/* Set a file to load from tape
+*/
+void	ZX81SetTape(const Z80Byte *image, int len);
+
+/* Reset the 81
+*/
+void	ZX81Reset(Z80 *z80);
+
+/* Tell the 81 that config may have changed.
+*/
+void	ZX81Reconfigure(void);
+
+/* Interfaces for the Z80
+*/
+Z80Byte	ZX81ReadMem(Z80 *z80, Z80Word addr);
+void	ZX81WriteMem(Z80 *z80, Z80Word addr, Z80Byte val);
+Z80Byte	ZX81ReadPort(Z80 *z80, Z80Word port);
+void	ZX81WritePort(Z80 *z80, Z80Word port, Z80Byte val);
+
+#define	ZX81ReadDisassem ZX81ReadMem
+
+/* Interfaces to allows the ZX81 to save/load itself as a snapshot to/from
+   a stream.
+*/
+void	ZX81SaveSnapshot(FILE *fp);
+void	ZX81LoadSnapshot(FILE *fp);
+
+#endif
+
+
+/* END OF FILE */