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60 lines
1.8 KiB
Markdown
60 lines
1.8 KiB
Markdown
SixtyPical
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==========
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SixtyPical is a very low-level programming language, similar to 6502 assembly,
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with static analysis through abstract interpretation.
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In practice, this means it catches things like
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* you forgot to clear carry before adding something to the accumulator
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* a subroutine that you call trashes a register you thought was preserved
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and suchlike.
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It is a **work in progress**, currently at the **proof-of-concept** stage.
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The current released version of SixtyPical is 0.5. The current development
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version of SixtyPical, unreleased as of this writing, is 0.6-PRE.
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Documentation
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-------------
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* Design Goals — coming soon.
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* [SixtyPical specification](doc/SixtyPical.md)
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* [SixtyPical history](HISTORY.md)
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* [Literate test suite for SixtyPical syntax](tests/SixtyPical Syntax.md)
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* [Literate test suite for SixtyPical execution](tests/SixtyPical Execution.md)
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* [Literate test suite for SixtyPical analysis](tests/SixtyPical Analysis.md)
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* [Literate test suite for SixtyPical compilation](tests/SixtyPical Compilation.md)
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* [6502 Opcodes used/not used in SixtyPical](doc/6502 Opcodes.md)
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TODO
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----
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For 0.6:
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* `call` vector (generates an JSR to a trampoline that does indirect JMP.)
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* `goto` (tail call) a a vector.
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* add routine name to error messages.
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* routines shouldn't need to be listed as inputs.
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For 0.7:
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* A more involved demo for the C64 — one that sets up an interrupt?
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For 0.8:
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* `word` type.
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* `trash` instruction.
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* zero-page memory locations.
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* indirect addressing.
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At some point...
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* `interrupt` routines.
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* 6502-mnemonic aliases (`sec`, `clc`)
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* other handy aliases (`eq` for `z`, etc.)
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* have `copy` instruction able to copy a constant to a user-def mem loc, etc.
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* add absolute addressing in shl/shr, absolute-indexed for add, sub, etc.
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* check and disallow recursion.
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