Small documentation sorting.
Chris Pressey
3 years ago
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0.12
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----
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* `copy` is now understood to trash `a`, thus it is not valid to use it in `copy`.
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* `copy` is now understood to trash `a`, thus it is not valid to use `a` in `copy`.
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To compensate, indirect addressing is supported in `ld` and `st`, for example,
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as `ld a, [ptr] + y` and `st a, [ptr] + y`.
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* Implements the "union rule for trashes" when analyzing `if` blocks.
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* Even if we `goto` another routine, we can't trash an output.
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* `static` storage locations local to routines can now be defined within routines.
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* Small grammar changes that obviate:
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* the need for parentheses in the type expression `vector (routine ...) table`#
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* the need for `forward` in forward references in source of `copy` instruction
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* Small grammar changes that obviate the need for:
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* the parentheses in type expressions like `vector (routine ...) table[256]`
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* the `forward` keyword in forward references in source of `copy` instruction
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* Fixed bug where `trash` was not marking the location as being virtually altered.
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0.11
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TODO
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----
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### `low` and `high` address operators
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To turn `word` type into `byte`.
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### Save registers on stack
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This preserves them, so that, semantically, they can be used later even though they
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### And at some point...
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* `low` and `high` address operators - to turn `word` type into `byte`.
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* `const`s that can be used in defining the size of tables, etc.
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* Tests, and implementation, ensuring a routine can be assigned to a vector of "wider" type
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* Related: can we simply view a (small) part of a buffer as a byte table? If not, why not?
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* Check that the buffer being read or written to through pointer, appears in approporiate inputs or outputs set.
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(Associate each pointer with the buffer it points into.)
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* `static` pointers -- currently not possible because pointers must be zero-page, thus `@`, thus uninitialized.
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