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57 lines
2.6 KiB
Plaintext
57 lines
2.6 KiB
Plaintext
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cc65 - A fairly mature C compiler + toolchain for the 6502 family with lots of target
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platforms and an extensive library. The code generation is
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not great, using the AX register pair and a parameter stack for local variables that has to be
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indirect-indexed (you can make locals static with an option, but I found
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this introduced compiler bugs.)
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LCC - A small retargetable C compiler released in 1994, most notoriously
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used to compile bytecode for the QuakeC language. It doesn't generate 6502
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code, but it probably could -- although optimizations are weak.
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There's an older port to the 65C816.
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ACK - This ancient compiler used for Minix has a lot of frontends and backends, and is designed
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for small-register CISC CPUs. There's a 6500 backend but I couldn't get it
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working. Looks like it could be resurrected though. There's an intermediate
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file for each step of the pipeline.
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PCC - An early C compiler from the days of UNIX, now updated to C99.
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There's a 16-bit target (x86) and the backends looks pretty simple.
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http://pcc.ludd.ltu.se/internals/pass2/
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SDCC - A mature compiler that supports lots of microcontrollers including
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the Z80. This is probably the best candidate for porting to 6502,
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but the backends are bespoke works of evil genius and there's precious little documentation.
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(I wonder if you could post-process the HC08 output to 6502, since they're similar in some ways.)
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LLVM-6502 - Someone uploaded this to Github. I got it to build, but the code
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generated wasn't comprehensible.
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osXdk - A fork of the Oric SDK. The C compiler has a weird design which
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emits bytecode and then uses a C preprocessor to expand the macros
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into 6502 assembler.
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PLASMA - Language + VM, sort of like SWEET16 meets
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Java. Simple, concise code base. Pretty fast too, in the same ballpark as
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CC65. Focused on the Apple I/II/III family.
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Atalan - Rule-based language/assembler with support for multiple 8-bit
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platforms. Looks promising, but I had problems with it crashing, and it
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lacks documentation/test cases. Atari-focused.
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Macross/Slinky - A macro cross-assembler developed by Chip Morningstar at
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Lucasfilm Ltd. for use in the game Habitat. Billed as "An assembler for
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people who hate assembly language."
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NESHLA - A high-level assembler in the same spirit as Macross, but with
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NES-specific features.
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WLA-DX - Some other weird cross-assembler with lots of CPU targets.
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z88dk - A Small C-derived cross-compiler for the Z80, supporting 20 target
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machines.
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SWEET16 - Woz's tiny bytecode interpreter on the Apple ][ integer BASIC ROM.
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Still emcumbered by Apple's copyright for the foreseeable future.
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http://6502.org/source/interpreters/sweet16.htm
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