mirror of
https://github.com/KrisKennaway/ii-vision.git
synced 2024-06-02 05:41:27 +00:00
f3d03a1b87
make_edit_distance - use MASKED_DOTS since it does not have a simple relationship to the HEADER_BITS/BODY_BITS for HGR - try disabling transposition distances for Damerau-Levenshtein, this may give better quality screen - introduce separate notion of MASKED_DOTS which is the number of (coloured) pixels we can extract from MASKED_BITS. For HGR this is not the same. - fix bug in _fix_array_neighbours that was not fixing headers for HGR - don't cache everything in byte_pair_differences, it's effectively unbounded. Using 1M for LRU size seems to work just as well in practise, without leaking memory. - fix bug in _diff_weights when comparing content, we want to evaluate the effect of storing content byte in each offset separately, not cumulatively. - add a consistency check function (not currently wired up) to assert that headers/footers are in sync across columns - HGR should have 16 body bits, this was causing headers not to propagate correctly to/from neighbouring column - add test case for this bug video - Use 8 random bits consistently, using 16 in some places may have introduced bias - ignore palette bit when comparing 0x00 and 0x7f in sanity check
26 lines
616 B
Python
26 lines
616 B
Python
"""Representation of Apple II + player virtual machine state."""
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from typing import Iterator
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# TODO: screen memory changes should happen via Machine while emitting opcodes?
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class Machine:
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"""Represents Apple II and player virtual machine state."""
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def emit(self, opcode: "Opcode") -> Iterator[int]:
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"""
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:param opcode:
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:return:
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"""
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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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if data:
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yield from data
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# Update changes in memory map, if any
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opcode.apply(self)
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