Thomas Harte
71ec7624ca
Corrects Apple DSK track length, inter-track skew, and Pro-DOS volume number.
2018-08-27 20:56:25 -04:00
Thomas Harte
234bef2a88
Adds default to make it explicit that fetch_address is initialised.
2018-08-24 22:26:03 -04:00
Thomas Harte
adb574e1cd
Merge pull request #529 from TomHarte/AppleDelay
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Corrects Apple II video defects
2018-08-24 22:11:41 -04:00
Thomas Harte
1f491e764e
Nudges visible area slightly to the right.
2018-08-24 22:08:11 -04:00
Thomas Harte
114a43a662
Corrects improper indexing for byte shift.
2018-08-24 21:58:43 -04:00
Thomas Harte
5547c39c91
Corrects documentation.
2018-08-24 20:06:40 -04:00
Thomas Harte
97a89aaf4d
Factors out the stuff of deferred action interleaving, as I suspect it'll come in handy.
2018-08-24 20:04:26 -04:00
Thomas Harte
61e46399dc
About face! There should be no delay on serialisation, but a delay on interpretation-affecting soft switches.
2018-08-22 21:56:45 -04:00
Thomas Harte
e802f6ecc2
Rearranges draw loop around a fixed-size 568-sample line buffer.
2018-08-19 22:31:04 -04:00
Thomas Harte
4209f0e044
Moves memory collection into a separate loop.
2018-08-18 21:54:24 -04:00
Thomas Harte
33576aa2c4
Uses const to ensure output_* are properly constrained.
2018-08-18 21:36:48 -04:00
Thomas Harte
17bf1a64bf
Moves the stuff of generating pixels out of the main loop.
2018-08-18 18:44:31 -04:00
Thomas Harte
f8d46f8f3d
Merge branch 'master' into AppleDelay
2018-08-18 14:11:21 -04:00
Thomas Harte
8787d85e64
Eliminates #undefs as being (i) unnecessary, now this is a source file; and (ii) incomplete in any case.
2018-08-17 22:24:42 -04:00
Thomas Harte
7f0f17f435
Merge pull request #523 from TomHarte/Further65C02
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Further corrects 65C02 behaviour
2018-08-17 21:58:38 -04:00
Thomas Harte
0e7f54f375
Implements STP and WAI, and ensures all unimplemented 65C02 instructions are NOP for all 65C02s.
2018-08-17 21:49:06 -04:00
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
4d1d19a464
Introduces an intermediate buffer for Apple II video data.
2018-08-12 20:36:08 -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
