Chris Pressey
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70247e0e44
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Generate zero-page code for and, or, and xor, when possible.
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2018-04-17 17:58:26 +01:00 |
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Chris Pressey
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27df0d27db
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Optimize away RTS and JMP when possible. Fallthru stuff done.
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2018-04-05 14:10:04 +01:00 |
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Chris Pressey
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fa1b0cfae1
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Support branching and looping on the n flag.
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2018-03-29 14:45:28 +01:00 |
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Chris Pressey
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b9fb26320c
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Add some failing tests for looping on the n flag.
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2018-03-29 13:33:06 +01:00 |
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Chris Pressey
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ebe53f540c
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Fix bug when zero page address was $00.
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2018-03-29 11:46:56 +01:00 |
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Chris Pressey
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eadf1eb4ae
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A byte or word table can be initialized with a list of constants.
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2018-03-29 11:09:02 +01:00 |
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Chris Pressey
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2f513f7291
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Initial support for initializing byte tables with list of bytes.
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2018-03-29 10:45:18 +01:00 |
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Chris Pressey
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9b912de17c
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Accessing zero-page with ld and st generates zero-page opcodes.
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2018-03-29 10:31:42 +01:00 |
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Chris Pressey
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1f992f8dbd
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Support of NOP opcode.
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2018-03-28 14:52:16 +01:00 |
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Chris Pressey
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adb53f7a04
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Almost compile for loops correctly.
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2018-03-14 15:33:11 +00:00 |
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Chris Pressey
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72efecbb1a
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Support different preludes for different archs (c64 and vic20 now.)
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2018-03-06 17:00:39 +00:00 |
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Chris Pressey
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f6fa1ec7d2
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Remove need for forward keyword in forward reference in copy.
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2018-02-12 15:59:20 +00:00 |
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Chris Pressey
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08ec0e46a3
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Remove the need for parens in vector (routine ...) table type.
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2018-02-12 14:53:49 +00:00 |
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Chris Pressey
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7a024f3062
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Compile static storage location access.
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2018-02-09 16:13:09 +00:00 |
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Chris Pressey
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71cded0297
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Move compiler towards being able to compile access to statics.
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2018-02-09 14:13:39 +00:00 |
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Chris Pressey
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ca1c877a60
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Support indirect refs in st, e.g. st a, [ptr] + y.
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2018-02-09 11:23:18 +00:00 |
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Chris Pressey
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34daad0e56
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Make ld parse to a IndexedRef or IndirectRef (latter still todo.)
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2018-02-08 11:04:11 +00:00 |
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Chris Pressey
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7c8f113c07
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Properly store address (not contents) of routine into vector table.
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2018-02-07 13:56:17 +00:00 |
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Chris Pressey
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6c1c1cb153
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Include final RTS when emitting trampolines for indirect calls.
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2018-02-07 11:11:14 +00:00 |
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Chris Pressey
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b4f5d60ad3
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I think it should actually look like this!
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2018-02-06 17:00:04 +00:00 |
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Chris Pressey
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ed1ed3eb5d
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Always analyze before compiling.
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2018-02-06 16:14:44 +00:00 |
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Chris Pressey
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70ecd52e8a
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Retain some syntax compatibility: make table a postfix operator.
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2018-02-06 11:34:21 +00:00 |
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Chris Pressey
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0be721667a
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Kind-of not-pretty syntax refactor to support adding typedefs.
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2018-02-05 17:01:25 +00:00 |
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Chris Pressey
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bbd3a84c00
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Retain silly 'name inside the type' syntax (a la C) for now.
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2018-02-05 11:18:35 +00:00 |
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Chris Pressey
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a082aee001
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NOt 100% sure it's correct, but it seems close.
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2018-02-02 17:56:50 +00:00 |
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Chris Pressey
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b29716fccf
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Constraints for vector come immediately after the type expression.
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2018-02-02 17:16:31 +00:00 |
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Chris Pressey
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548905dce4
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Initialized byte tables need not have all 256 bytes initialized.
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2018-02-02 16:31:23 +00:00 |
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Chris Pressey
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f9dc730f88
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copy []+y, a to indirectly read byte into the a register.
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2017-12-13 16:11:02 +00:00 |
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Chris Pressey
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c7861d375c
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trash indicates a value is no longer considered meaningful.
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2017-12-13 15:23:06 +00:00 |
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Chris Pressey
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5f535c963e
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Subtract word (constant or memory location) from word memory location.
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2017-12-13 14:07:59 +00:00 |
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Chris Pressey
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f87bcf5ee4
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Initial work on initialized byte tables.
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2017-12-12 16:41:49 +00:00 |
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Chris Pressey
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50390b0787
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Can copy a literal word to a word table.
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2017-12-12 16:04:59 +00:00 |
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Chris Pressey
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63f75a26b4
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Initialized word type memory locations.
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2017-12-12 15:34:51 +00:00 |
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Chris Pressey
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4854077cce
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Correctly analyze repeat { ... } forever loops.
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2017-12-12 15:18:59 +00:00 |
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Chris Pressey
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b4709268bc
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Check in test appliance (dcc6502-adapter) that was missed.
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2017-12-11 13:46:06 +00:00 |
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Chris Pressey
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2216fcec17
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copy from word storage to word table and back, indexed by x or y.
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2017-12-11 12:02:48 +00:00 |
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Chris Pressey
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b86e7491d5
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Copy word to word table.
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2017-12-11 11:43:53 +00:00 |
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Chris Pressey
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81aeb6c3f7
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Use dcc6502 to disassemble code for comparison in unit tests.
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2017-12-11 11:16:27 +00:00 |
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Chris Pressey
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404f8c72a3
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We really need to review how storage location labels are emitted.
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2017-12-08 16:59:31 +00:00 |
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Chris Pressey
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84ca6c4e96
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Break the ground where we need to implement word table read/write.
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2017-12-08 15:53:18 +00:00 |
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Chris Pressey
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ad8e0647a4
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Use right endianness when copying literal word into storage.
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2017-12-07 16:49:43 +00:00 |
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Chris Pressey
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75cf18d3a2
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Add word (constant or memory loc) to pointer (unchecked for now).
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2017-12-07 14:14:43 +00:00 |
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Chris Pressey
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a4fd0e590b
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Adding a word memory location to another word memory location.
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2017-12-07 13:15:21 +00:00 |
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Chris Pressey
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92525fd482
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Adding a constant word to a memory location.
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2017-12-07 12:48:56 +00:00 |
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Chris Pressey
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6afbf581f7
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Deal with the inputs/outputs of buffers, in a weak way.
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2017-12-01 15:10:16 +00:00 |
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Chris Pressey
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d84566a880
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Write stored values, and read values, through pointers.
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2017-12-01 13:52:56 +00:00 |
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Chris Pressey
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32389e4422
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Require that the program does ^buf to get at the address of buf.
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2017-12-01 12:36:58 +00:00 |
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Chris Pressey
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19a196f765
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Compile copy[]+y.
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2017-11-24 16:56:55 +00:00 |
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Chris Pressey
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c8c69a2a7d
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Fix problem with test case, and with serializing as zero page.
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2017-11-24 13:42:14 +00:00 |
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Chris Pressey
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e41dd1aa01
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Attempt to add Zero Page addressing; the emitter may need rethink.
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2017-11-24 13:09:10 +00:00 |
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