updates

1 files changed, 12 insertions, 6 deletions

diff --git a/Chip/BusDevice.cs b/Chip/BusDevice.cs
index e1f559c..8b677c5 100644
--- a/Chip/BusDevice.cs
+++ b/Chip/BusDevice.cs
@@ -14,20 +14,26 @@ public abstract class BusDevice
     public abstract u8 Read(u16 address);
     public abstract void Write(u16 address, u8 value);
     
-    public abstract ref8 ReadSeq(u16 address, u16 length);
-    public abstract void WriteSeq(u16 address, u16 length, ref8 value);
-    
     public u16 ReadWord(u16 address)
     {
-        ref8 data = this.ReadSeq(address, 2);
-        u16 value = Make.u16(data);
+        u8 high = this.Read(address);
+        u8 low = this.Read((u16) (address + 1));
+        u16 value = Make.u16(high, low);
         return value;
     }
     
     public void WriteWord(u16 address, u16 value)
     {
         ref8 data = Make.ref8(value);
-        this.WriteSeq(address, 2, data);
+        this.Write(address, data[0]);
+        this.Write((u16) (address + 1), data[1]);
+    }
+    
+    public i16 ReadSignedWord(u16 address)
+    {
+        u8 high = this.Read(address);
+        u8 low = this.Read((u16) (address + 1));
+        return Make.i16(high, low);
     }
 
     public virtual void Clock() { }