Diff: cbmconsole.cpp

Revision:

0:90de1cbc8a5f

Child:

4:0461c100cbbb

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cbmconsole.cpp	Thu Apr 09 14:45:56 2020 +0000
@@ -0,0 +1,143 @@
+// cbmconsole.c - Commodore Console Emulation
+//
+////////////////////////////////////////////////////////////////////////////////
+//
+// c-simple-emu-cbm (C Portable Version)
+// C64/6502 Emulator for Microsoft Windows Console
+//
+// MIT License
+//
+// Copyright(c) 2020 by David R.Van Wagner
+// davevw.com
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+//
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+////////////////////////////////////////////////////////////////////////////////
+
+#include <mbed.h>
+#include "cbmconsole.h"
+
+// locals
+static int supress_first_clear = 1;
+static int supress_next_cr = 0;
+static char buffer[256];
+static int buffer_head = 0;
+static int buffer_tail = 0;
+static int buffer_count = 0;
+
+// global references
+extern Serial pc;
+
+static void Console_Clear()
+{
+	if (supress_first_clear)
+	{
+		supress_first_clear = 0;
+		return;
+	}
+	pc.printf("\x1B[2J\x1B[H");
+}
+
+static void Console_Cursor_Up()
+{
+	pc.printf("\x1B[A");
+}
+
+static void Console_Cursor_Down()
+{
+	pc.printf("\x1B[B");
+}
+
+static void Console_Cursor_Left()
+{
+	pc.printf("\x1B[D");
+}
+
+static void Console_Cursor_Right()
+{
+	pc.printf("\x1B[C");
+}
+
+static void Console_Cursor_Home()
+{
+	pc.printf("\x1B[H");
+}
+
+void CBM_Console_WriteChar(unsigned char c)
+{
+	// we're emulating, so draw character on local console window
+	if (c == 0x0D)
+	{
+		if (supress_next_cr)
+			supress_next_cr = 0;
+		else
+			pc.putc('\n');
+	}
+	else if (c >= ' ' && c <= '~')
+	{
+		//ApplyColor ? .Invoke();
+		pc.putc(c);
+	}
+	else if (c == 157) // left
+		Console_Cursor_Left();
+	else if (c == 29) // right
+		Console_Cursor_Right();
+	else if (c == 145) // up
+		Console_Cursor_Up();
+	else if (c == 17) // down
+		Console_Cursor_Down();
+	else if (c == 19) // home
+		Console_Cursor_Home();
+	else if (c == 147)
+	{
+		Console_Clear();
+	}
+}
+
+// blocking read to get next typed character
+unsigned char CBM_Console_ReadChar(void)
+{
+	unsigned char c;
+	if (buffer_count == 0)
+	{
+		c = pc.getc();
+//		if (c >= ' ' && c <= '~')
+//			pc.putc(c); // echo
+		if (c == '\r')
+			supress_next_cr = true;
+		return c;
+	}
+	c = buffer[buffer_head++];
+	if (buffer_head >= sizeof(buffer))
+		buffer_head = 0;
+	--buffer_count;
+	return c;
+}
+
+void CBM_Console_Push(const char* s)
+{
+	while (s != 0 && *s != 0 && buffer_count < sizeof(buffer))
+	{
+		buffer[buffer_tail++] = *(s++);
+		if (buffer_tail >= sizeof(buffer))
+			buffer_tail = 0;
+		++buffer_count;
+	}
+}