input working, double chars for now(next thing to figure out), can now quite with ctrl-D

mp-s7-src/main.cc

@@ -98,6 +98,7 @@ extern "C" void gc_collect(void) {
 // Receive single character
 int mp_hal_stdin_rx_chr(void) {
     unsigned char c = 0;
+    c = retro::Console::currentInstance->ReadChar();
     return c;
 }
 

mp-s7-src/retro/Console.cc

@@ -326,6 +326,27 @@ std::string Console::ReadLine()
     return buffer;
 }
 
+char Console::ReadChar()
+{
+    if(!consolePort)
+        return 0;
+
+    char c;
+
+    c = WaitNextChar();
+    if(!c)
+    {
+        eof = true;
+        return 0;
+    }
+
+    if(c == '\r')
+        c = '\n';
+
+    putch(c);
+    return c;
+}
+
 void Console::InvalidateCursor()
 {
     if(cursorDrawn)

mp-s7-src/retro/Console.h

@@ -40,6 +40,7 @@ namespace retro
 
         void write(const char *s, int n);
         std::string ReadLine();
+	char ReadChar();
 
         static Console *currentInstance;