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console.py

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+ #nothing here yet jimbo 

graphics.py

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+ #nothing here yet jimbo 

main.py

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+#made by zombie
+#02/01/21
+
+#0-255 is internal registers and flags and etc
+# program execcution starts at 256
+#stack starts at 65535 FILO
+
+#0  IP      #Instruction Pointer
+#1	EAX
+#2	EBX
+#3	ECX
+#4	EDX
+#5	ESI
+#6	EDI
+#7	ESP     #stack pointer
+#8	EBP
+#9  FLAG    #Read-Only contains the flags
+
+
+#list of opcodes
+#0 interrupt
+#1 reset
+#2 debug info (nop)
+#3 mov
+
+
+import math
+import numpy as np
+
+
+
+
+
+class Zomcpu:
+    def __init__(self, memorysize=None, debug=None):
+        print('Processor Init')
+        self._memorysize = memorysize
+        self._memory = np.zeros(memorysize)
+        self._debug = debug
+        
+    def reset(self):
+        print('Processor Resetting')
+        self._memory = np.zeros(self._memorysize) #clear memory
+        
+        self._memory[7] = self._memorysize - 1 #set stackpointer
+        self._memory[0] = 256 #set instructiojn pointer
+        
+    def exec(self):
+        Go = 1
+        while Go: #change this to if not halt
+            #fetch
+            opcode = self._memory[int(self._memory[0])]
+            address = self._memory[int(self._memory[0] + 1)]
+            value = self._memory[int(self._memory[0] + 2)]
+            
+            if self._debug:
+                print(f'Opcode: {opcode}\nAddress: {address}\nValue: {value}\nIP: {self._memory[0]}')
+
+            if opcode == 0:
+                Go = value
+                if value == 0:
+                    print('Processor Halted')
+
+            elif opcode == 1: #reset
+                self.reset()
+            
+            elif opcode == 2: #debug (nop if debug is not set)
+                if self._debug:
+                    print(f'Opcode: {opcode}\nAddress: {address}\nValue: {value}')
+                
+            elif opcode == 3: #mov
+                self.write_memory(address, value)
+                
+            self._memory[0] += 3 #increment instruction pointer
+            
+    
+    def set_memory(self, memory):
+        self._memory = memory
+    def write_memory(self, address, value):
+        self._memory[int(address)] = value
+    def read_memory(self):
+        return self._memory
+    def read_memory_address(self, address):
+        return self._memory[address]
+            
+        
+if __name__ == "__main__":
+    cpu = Zomcpu(65536, True)
+    cpu.reset()
+    print(cpu.read_memory_address(7))
+    
+    #hard coded opcodes
+    cpu.write_memory(256, 3)
+    cpu.write_memory(257, 27)
+    cpu.write_memory(258, 105)
+    print(cpu.read_memory_address(27))
+    cpu.exec()
+    print(cpu.read_memory_address(27))
+