💻 Put the opcodes in a sperate file and labeled them
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3 changed files with 87378 additions and 18 deletions
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87350
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35
main.py
35
main.py
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@ -28,7 +28,7 @@
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import math
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import numpy as np
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from console import Console
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import opcodes as ops
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np.set_printoptions(threshold=np.inf)
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@ -48,8 +48,8 @@ class Zomcpu:
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self._memory[0] = 256 #set instructiojn pointer
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def exec(self):
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Go = 1
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while Go: #change this to if not halt
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Halted = False
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while not Halted: #change this to if not halt
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#fetch
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opcode = self._memory[int(self._memory[0])]
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address = self._memory[int(self._memory[0] + 1)]
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@ -58,26 +58,27 @@ class Zomcpu:
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if self._debug:
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print(f'Opcode: {opcode}\nAddress: {address}\nValue: {value}\nIP: {self._memory[0]}')
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if opcode == 0:
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Go = value
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if value == 0:
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if opcode == ops.NOP:
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pass
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elif opcode == ops.HLT:
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Halted = True
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print('Processor Halted')
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elif opcode == 1: #reset
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elif opcode == ops.RST: #reset
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self.reset()
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elif opcode == 2: #debug (nop if debug is not set)
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if self._debug:
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print(f'Opcode: {opcode}\nAddress: {address}\nValue: {value}')
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elif opcode == ops.DBG: #debug enable
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self._debug = value
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elif opcode == 3: #mov
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elif opcode == ops.LDI: #mov but actually load immediate
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self.write_memory(address, value)
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elif opcode == 4: #push
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elif opcode == ops.PUSH: #push
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self.write_memory(self._memory[7], value) #put value onto stack
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self.write_memory(7, self._memory[7] - 1) #dec stackpointer
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elif opcode == 5: #pop
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elif opcode == ops.POP: #pop
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self.write_memory(address, self.read_memory_address(self._memory[7] + 1)) #read the last value and put it into address (not the empty space)
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self.write_memory(7, self._memory[7] + 1) #inc stackpointer
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@ -98,15 +99,17 @@ if __name__ == "__main__":
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cpu.reset()
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#hard coded opcodes
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cpu.write_memory(256, 3) #mov
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cpu.write_memory(256, ops.LDI) #mov
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cpu.write_memory(257, 27) #address 27
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cpu.write_memory(258, 105) #105 into ^
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cpu.write_memory(259, 4) #push
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cpu.write_memory(259, ops.PUSH) #push
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cpu.write_memory(260, 0) #unused in this op
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cpu.write_memory(261, 27) #the value at address 27 onto the stack
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cpu.write_memory(262, 5) #pop
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cpu.write_memory(262, ops.POP) #pop
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cpu.write_memory(263, 100) #into 100
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cpu.write_memory(264, 0) #unused in this op
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cpu.write_memory(265, 1) #halt
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7
opcodes.py
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7
opcodes.py
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@ -0,0 +1,7 @@
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NOP = 0 # No operation
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HLT = 1 # Halt
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RST = 2 # Reset
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DBG = 3 # Enables Debug
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LDI = 4 # Load Immediate
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PUSH = 5 # Push
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POP = 6 # Pop
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