mirror of
https://github.com/KrisKennaway/ii-vision.git
synced 2025-03-11 04:37:03 +00:00
Remove old video-only opcode support.
This commit is contained in:
kris
parent
d90b865b16
commit
4cb45efb2c
7
movie.py
7
movie.py
@ -26,8 +26,6 @@ class Movie:
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self.video.update_priority
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)
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self._last_op = opcodes.Nop()
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def encode(self) -> Iterator[opcodes.Opcode]:
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video_frames = self.video.frames()
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video_seq = None
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@ -50,10 +48,9 @@ class Movie:
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def _emit_bytes(self, _op):
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# print("%04X:" % self.stream_pos)
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for b in self.state.emit(self._last_op, _op):
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for b in self.state.emit(_op):
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yield b
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self.stream_pos += 1
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self._last_op = _op
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def emit_stream(self, ops: Iterable[opcodes.Opcode]) -> Iterator[int]:
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for op in ops:
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@ -67,8 +64,6 @@ class Movie:
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for _ in range(nops):
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yield from self._emit_bytes(opcodes.Nop())
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yield from self._emit_bytes(opcodes.Ack())
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# Ack falls through to nop
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self._last_op = opcodes.Nop()
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yield from self._emit_bytes(op)
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def done(self) -> Iterator[int]:
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224
opcodes.py
224
opcodes.py
@ -29,8 +29,8 @@ class State:
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self.cycle_counter = cycle_counter
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self.update_priority = update_priority
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def emit(self, last_opcode: "Opcode", opcode: "Opcode") -> Iterator[int]:
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cmd = opcode.emit_command(last_opcode, opcode)
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def emit(self, opcode: "Opcode") -> Iterator[int]:
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cmd = opcode.emit_command(opcode)
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if cmd:
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yield from cmd
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data = opcode.emit_data()
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@ -45,11 +45,6 @@ class State:
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_op_cmds = [
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"STORE",
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"SET_CONTENT", # # set new data byte to write
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"SET_PAGE",
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"RLE",
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"TICK",
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"TERMINATE",
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"NOP",
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"ACK",
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@ -71,9 +66,6 @@ class Opcode:
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# Offset of last byte in decoder opcode
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_END = None # type: int
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# Opcode uses relative addressing to branch to next opcode
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_RELATIVE_BRANCH = False
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def __repr__(self):
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return "Opcode(%s)" % self.COMMAND.name
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@ -91,18 +83,10 @@ class Opcode:
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return self._CYCLES
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@staticmethod
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def emit_command(last_opcode: "Opcode",
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opcode: "Opcode") -> Iterator[int]:
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# Compute offset from last opcode's terminating BRA instruction to
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# first instruction of this opcode.
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if last_opcode._RELATIVE_BRANCH:
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offset = (opcode._START - last_opcode._END - 1) & 0xff
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# print("%s -> %s = %02x" % (last_opcode, opcode, offset))
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yield offset
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else:
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yield opcode._START >> 8
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yield opcode._START & 0xff
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def emit_command(opcode: "Opcode") -> Iterator[int]:
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# Emit address of next opcode
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yield opcode._START >> 8
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yield opcode._START & 0xff
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def emit_data(self) -> Iterator[int]:
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return
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@ -113,152 +97,15 @@ class Opcode:
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class Nop(Opcode):
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COMMAND = OpcodeCommand.NOP
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_CYCLES = 11
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_CYCLES = 11 # TODO: count
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def __data_eq__(self, other):
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return True
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class Store(Opcode):
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COMMAND = OpcodeCommand.STORE
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_CYCLES = 20
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_RELATIVE_BRANCH = True
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def __init__(self, offset: int):
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if offset < 0 or offset > 255:
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raise ValueError("Invalid offset: %d" % offset)
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self.offset = offset
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def __repr__(self):
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return "Opcode(%s, %02x)" % (
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self.COMMAND.name, self.offset)
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def __data_eq__(self, other):
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return self.offset == other.offset
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def emit_data(self):
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# print(" Store @ %02x" % self.offset)
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yield self.offset
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def apply(self, state):
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state.memmap.write(state.page, self.offset, state.content)
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# TODO: screen page
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state.update_priority[state.page - 32, self.offset] = 0
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class SetContent(Opcode):
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COMMAND = OpcodeCommand.SET_CONTENT
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_CYCLES = 15
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_RELATIVE_BRANCH = True
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def __init__(self, content: int):
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self.content = content
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def __repr__(self):
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return "Opcode(%s, %02x)" % (
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self.COMMAND.name, self.content)
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def __data_eq__(self, other):
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return self.content == other.content
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def emit_data(self):
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yield self.content
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def apply(self, state: State):
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# print(" Set content %02x" % self.content)
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state.content = self.content
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class SetPage(Opcode):
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COMMAND = OpcodeCommand.SET_PAGE
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_CYCLES = 23
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_RELATIVE_BRANCH = True
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def __init__(self, page: int):
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self.page = page
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def __repr__(self):
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return "Opcode(%s, %02x)" % (
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self.COMMAND.name, self.page)
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def __data_eq__(self, other):
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return self.page == other.page
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def emit_data(self):
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yield self.page
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def apply(self, state: State):
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# print(" Set page %02x" % self.page)
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state.page = self.page
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class RLE(Opcode):
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COMMAND = OpcodeCommand.RLE
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_CYCLES = 22
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_RELATIVE_BRANCH = True
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def __init__(self, start_offset: int, run_length: int):
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self.start_offset = start_offset
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self.run_length = run_length
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def __repr__(self):
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return "Opcode(%s, %02x, %02x)" % (
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self.COMMAND.name, self.start_offset, self.run_length)
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def __data_eq__(self, other):
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return (
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self.start_offset == other.start_offset and
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self.run_length == other.run_length)
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def emit_data(self):
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# print(" RLE @ %02x * %02x" % (self.start_offset, self.run_length))
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yield self.start_offset
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yield self.run_length - 1
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@property
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def cycles(self):
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return 22 + 10 * self.run_length
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def apply(self, state):
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for i in range(self.run_length):
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offset = (self.start_offset + i) & 0xff
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state.memmap.write(state.page, offset, state.content)
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# TODO: screen page
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state.update_priority[state.page - 32, offset] = 0
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class Tick(Opcode):
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COMMAND = OpcodeCommand.TICK
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_RELATIVE_BRANCH = True
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def __init__(self, cycles: int):
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self._START -= (cycles - 15) // 2
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self._cycles = cycles
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def __repr__(self):
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return "Opcode(%s, %02x)" % (
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self.COMMAND.name, self.cycles)
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def __data_eq__(self, other):
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return self._cycles == other._cycles
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@property
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def cycles(self):
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return self._cycles
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def emit_data(self):
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print(" Tick @ %02x" % self.cycles)
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class Terminate(Opcode):
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COMMAND = OpcodeCommand.TERMINATE
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_CYCLES = 6
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_CYCLES = 6 # TODO: count
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def __data_eq__(self, other):
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return True
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@ -266,7 +113,7 @@ class Terminate(Opcode):
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class Ack(Opcode):
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COMMAND = OpcodeCommand.ACK
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_CYCLES = 100 # XXX todo
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_CYCLES = 100 # TODO: count
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def __data_eq__(self, other):
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return True
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@ -344,12 +191,7 @@ def _FillOpcodeAddresses():
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_OPCODE_ADDRS = _ParseSymbolTable()
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_OPCODE_CLASSES = {
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# OpcodeCommand.STORE: Store,
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# OpcodeCommand.SET_CONTENT: SetContent,
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# OpcodeCommand.SET_PAGE: SetPage,
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# OpcodeCommand.RLE: RLE,
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# OpcodeCommand.TICK: Tick,
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# OpcodeCommand.TERMINATE: Terminate,
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OpcodeCommand.TERMINATE: Terminate,
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OpcodeCommand.NOP: Nop,
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OpcodeCommand.ACK: Ack,
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}
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@ -359,49 +201,3 @@ for _tick in range(4, 68, 2):
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_tickop = OpcodeCommand["TICK_%d_PAGE_%d" % (_tick, _page)]
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_OPCODE_CLASSES[_tickop] = TICK_OPCODES[(_tick, _page)]
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_FillOpcodeAddresses()
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class Decoder:
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def __init__(self, state: State):
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self.state = state # type: State
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def decode_stream(self, stream: Iterator[int]) -> Tuple[int, int, int, int]:
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"""Replay an opcode stream to build a screen image."""
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num_content_changes = 0
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num_page_changes = 0
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num_content_stores = 0
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num_rle_bytes = 0
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terminate = False
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for b in stream:
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if b == OpcodeCommand.SET_CONTENT.value:
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content = next(stream)
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op = SetContent(content)
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num_content_changes += 1
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elif b == OpcodeCommand.SET_PAGE.value:
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page = next(stream)
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op = SetPage(page)
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num_page_changes += 1
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elif b == OpcodeCommand.RLE.value:
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offset = next(stream)
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run_length = next(stream)
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num_rle_bytes += run_length
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op = RLE(offset, run_length)
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elif b == OpcodeCommand.TICK.value:
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cycles = next(stream)
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op = Tick(cycles)
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elif b == OpcodeCommand.TERMINATE.value:
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op = Terminate()
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terminate = True
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else:
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op = Store(b)
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num_content_stores += 1
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op.apply(self.state)
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if terminate:
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break
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return (
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num_content_stores, num_content_changes, num_page_changes,
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num_rle_bytes
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)
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