Thomas Harte
b3bdfa9f46
Corrected: it's three-cycle 65C02 branches that ignore interrupts, not two.
2018-08-16 20:47:49 -04:00
Thomas Harte
592ec69d36
Causes the 65C02 not to accept interrupts immediately after untaken branches.
2018-08-15 22:42:04 -04:00
Thomas Harte
60e00ddd02
Correction: the test for not skipping an operand fetch requires a 65C02.
2018-08-15 22:07:17 -04:00
Thomas Harte
6806193dc2
Ensures that "Read/Modify/Write instructions absolute indexed in same page" take only six cycles on a 65C02.
2018-08-15 19:17:37 -04:00
Thomas Harte
c35dca783f
Ensures that page-crossing indexing no longer causes an extra read of an invalid address on the 65C02.
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It rereads the last byte of the instruction stream instead.
2018-08-15 18:47:53 -04:00
Thomas Harte
901e0d65b9
Documents all 6502 micro-operations.
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Also makes sure 1-cycle NOPs really, definitely are one cycle only on a 65C02 and eliminates OperationCopyOperandFromA as a redundant copy of OperationSTA.
2018-08-14 22:17:53 -04:00
Thomas Harte
ddf45a0010
Ensures NMI and RST reset D on 65C02s.
2018-08-14 19:49:14 -04:00
Thomas Harte
1eca4463b3
Ensures NMI can no longer usurp BRK on 65C02s.
2018-08-14 19:33:48 -04:00
Thomas Harte
be01203cc1
Starts to expand the range of supported 6502s.
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This fully implements the NES 6502 because, well, it's virtually no extra work, and ensures that RDY takes effect on write cycles on 65C02s.
2018-08-13 22:17:22 -04:00
Thomas Harte
760817eb3b
Merge pull request #521 from TomHarte/AppleVideo
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Fixes Apple II double low resolution graphics
2018-08-11 23:20:40 -04:00
Thomas Harte
cb47575860
Eliminates stdout chatter.
2018-08-11 22:57:54 -04:00
Thomas Harte
434d184503
Corrects deserialisation order in double low res mode.
2018-08-11 22:53:06 -04:00
Thomas Harte
7374c665e8
Corrects regression in video flushing.
2018-08-11 19:57:39 -04:00
Thomas Harte
10c930a59d
Merge pull request #520 from TomHarte/EnhancedIIe
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Adds Enhanced IIe emulation.
2018-08-11 19:42:47 -04:00
Thomas Harte
60ab6f0c2a
Entrusts IIe-esque character logic fully to the ROM.
2018-08-11 18:45:39 -04:00
Thomas Harte
a13eb351da
Implements the Enhanced IIe, other than some text selection errors.
2018-08-11 10:26:30 -04:00
Thomas Harte
4b91910fab
Removes erroneous addition.
2018-08-10 23:27:09 -04:00
Thomas Harte
f46d52364c
Merge pull request #519 from TomHarte/65C02
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Makes an initial pass at 65C02 emulation
2018-08-10 23:21:45 -04:00
Thomas Harte
878c63dcd2
Ensures ADC and SBC decimal take an extra cycle on the 65C02.
2018-08-10 22:52:55 -04:00
Thomas Harte
261fb3d4f8
Implements proper test for ADC/SBC 65C02 NZ, though not yet the proper timing.
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This gets Klaus Dorman's test to pass.
2018-08-10 22:42:35 -04:00
Thomas Harte
b63e0cff72
Improves has-completed test.
2018-08-10 22:27:01 -04:00
Thomas Harte
5d6e479338
Implements RMB and SMB, and fixes SBC (zero).
2018-08-10 22:13:51 -04:00
Thomas Harte
90094529a5
Implements TSB and TRB, and adds the extra BIT instructions.
2018-08-10 22:04:45 -04:00
Thomas Harte
aed4c0539e
Implements STZ.
2018-08-10 21:17:02 -04:00
Thomas Harte
8b50ab2593
Corrects (zero) behaviour.
2018-08-10 21:12:55 -04:00
Thomas Harte
95164b79c9
Attempted implementation of (zp) addressing mode.
2018-08-09 21:51:14 -04:00
Thomas Harte
6f838fe190
Implements INA and DEA.
2018-08-08 22:30:19 -04:00
Thomas Harte
bb680b40d8
Implements the 65C02's JMPs.
2018-08-08 22:26:57 -04:00
Thomas Harte
e3f6da6994
Implements the 65C02 NOPs.
2018-08-08 20:00:14 -04:00
Thomas Harte
e46bde35f5
Implements BBS and BBR.
2018-08-07 21:52:17 -04:00
Thomas Harte
32338bea4d
Implements BRA.
2018-08-06 22:37:30 -04:00
Thomas Harte
5c881bd19d
Implements PLX, PLY, PHX and PHY.
2018-08-06 22:00:23 -04:00
Thomas Harte
1a44ef0469
Introduces Klaus Dorman's 65C02 tests. All failing.
2018-08-06 21:48:43 -04:00
Thomas Harte
ebce9a2e51
Fixes test target.
2018-08-06 21:15:13 -04:00
Thomas Harte
633af4d404
The operations table is now per-instance.
2018-08-06 20:47:14 -04:00
Thomas Harte
76a73c835c
Forces 6502 consumers to declare which model — the original, 65C02 or 65SC02.
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All present machines use a regular 6502.
2018-08-06 20:06:07 -04:00
Thomas Harte
c1d1c451ef
Merge pull request #518 from TomHarte/MacInsertDisplay
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Tweaks the Mac UI
2018-08-06 19:12:17 -04:00
Thomas Harte
3be30d8c71
Tries once again to introduce file type icons.
2018-08-06 19:08:27 -04:00
Thomas Harte
d4c1244485
Adds a hint for users.
2018-08-06 18:56:59 -04:00
Thomas Harte
c61b9dca17
Ensures the Mac doesn't show the 'Insert...' option for machines that can't accept an insertion.
2018-08-06 18:52:42 -04:00
Thomas Harte
39bf682016
Adds mentions of the IIe.
2018-08-06 12:03:54 -04:00
Thomas Harte
60ac9b49ea
Merge pull request #517 from TomHarte/MacInsertUI
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Completes Mac UI 'Insert...' change
2018-08-05 22:58:16 -04:00
Thomas Harte
a8bb18e2cf
Merge branch 'master' into MacInsertUI
2018-08-05 22:57:28 -04:00
Thomas Harte
1852786609
Merge pull request #516 from TomHarte/MacInsertUI
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Adds an 'Insert...' menu option.
2018-08-05 22:51:00 -04:00
Thomas Harte
31df8c7e91
Corrects improper NSWindowController sheet stack manipulation.
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As a result, 'Insert...' now seems to work properly.
2018-08-05 22:47:51 -04:00
Thomas Harte
832939f5b7
Merge branch 'master' into MacInsertUI
2018-08-05 22:39:00 -04:00
Thomas Harte
c2d9e1ec81
Merge pull request #515 from TomHarte/POPImage
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Adds an Apple II screenshot to the readme.
2018-08-05 17:58:53 -04:00
Thomas Harte
673b915ee8
Reduces post-table image size a little.
2018-08-05 17:57:37 -04:00
Thomas Harte
032a62dfff
Adds An Apple II screenshot to the mix.
2018-08-05 17:56:10 -04:00
Thomas Harte
f2d78182a3
Merge pull request #514 from TomHarte/VideoFixes
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Fixes various IIe video deficiencies.
2018-08-05 17:49:13 -04:00
