large progress approaching functionality

1 files changed, 12 insertions, 2 deletions

diff --git a/src/apple.c b/src/apple.c
index 8a5e73b..6f48c10 100644
--- a/src/apple.c
+++ b/src/apple.c
@@ -84,9 +84,14 @@ byte GetMemory(address x){
 		// The keyboard does not act precisely as the real hardware, because there is no need to wait for the keyboard.
 		// So KBD_CR and DSP always return a high high-order bit, and when the keyboard data is requested it will wait for UserInput() to finish.
 	case KBD:
-		return 0b10000000 | UserInput();
-	case KBD_CR: case DSP:
+		char c = -1;
+		while(c == -1)
+			c = UserInput();
+		return 0b10000000 | c;
+	case KBD_CR:
 		return 0b10000000;
+	case DSP:
+		return 0b00000000;
 	}
 
 	if (x >= 0xFF00 && x <= 0xFFFF) {
@@ -100,6 +105,11 @@ byte GetMemory(address x){
 }
 
 void SetMemory(address x, byte y){
+	switch(x)
+		{
+		case DSP:
+
+		}
 	if (x < MEMORY_SIZE) {
 		Memory[x] = y;
 	}