5a5fc1ae1a
Merge pull request #541 from TomHarte/Annunciator3
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Implements the two undocumented annunciator 3 graphics modes
2018-09-09 10:06:52 -04:00
8d79a1e381
Corrected fat low-res implementation.
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As per comment of awanderin that "the odd addresses don't get their pixels auto-shifted by the hardware as with normal lo-res".
2018-09-09 10:06:21 -04:00
d70f5da94e
Attempts an implementation of the undocumented low res + annunciator 3 graphics mode.
2018-09-08 20:51:15 -04:00
afeec09902
Gets explicit about DHIRES being annunciator 3; implements four-colour high res mode.
2018-09-06 23:23:19 -04:00
0526ac2ee2
Slightly increases const correctness.
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The converters from source data to output pixels do not modify the source data. It's a shame there's no `restrict` in C++.
2018-09-05 11:36:40 -04:00
6725ee2190
Merge pull request #539 from TomHarte/40ColumnTextCorruption
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Corrects 40-column alternative text mode corruption
2018-09-05 10:27:09 -04:00
8b661fb90f
Introduces an extra level of indirection for text mapping.
2018-09-05 10:26:08 -04:00
dab7d3db1b
Merge branch 'master' into 40ColumnTextCorruption
2018-08-30 20:24:47 -04:00
1cba3d48d9
Merge pull request #538 from TomHarte/AppleDecodingAgain
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Correction: 0xc011 et al get the keyboard value in bits 0 to 6...
2018-08-30 20:19:48 -04:00
d53b38ec7e
Correction: 0xc011 et al get the keyboard value in bits 0 to 6 and the switch value in bit 7.
2018-08-30 20:18:36 -04:00
5d0f47eda2
Merge pull request #536 from TomHarte/AppleDecoding
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Adds mirrors for keyboard input and the audio toggle.
2018-08-27 21:14:48 -04:00
2e04c4442c
Adds mirrors for keyboard input and the audio toggle.
2018-08-27 21:14:21 -04:00
f639cdc8ad
Merge pull request #535 from TomHarte/DSKFixes
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Corrects Apple DSK track length, inter-track skew, and Pro-DOS volume number.
2018-08-27 21:07:11 -04:00
71ec7624ca
Corrects Apple DSK track length, inter-track skew, and Pro-DOS volume number.
2018-08-27 20:56:25 -04:00
0599d9602e
Ensures no out-of-bounds accesses to inverses on a IIe.
2018-08-26 23:02:31 -04:00
234bef2a88
Adds default to make it explicit that fetch_address is initialised.
2018-08-24 22:26:03 -04:00
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
1f491e764e
Nudges visible area slightly to the right.
2018-08-24 22:08:11 -04:00
114a43a662
Corrects improper indexing for byte shift.
2018-08-24 21:58:43 -04:00
5547c39c91
Corrects documentation.
2018-08-24 20:06:40 -04:00
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
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
e802f6ecc2
Rearranges draw loop around a fixed-size 568-sample line buffer.
2018-08-19 22:31:04 -04:00
4209f0e044
Moves memory collection into a separate loop.
2018-08-18 21:54:24 -04:00
33576aa2c4
Uses const to ensure output_* are properly constrained.
2018-08-18 21:36:48 -04:00
17bf1a64bf
Moves the stuff of generating pixels out of the main loop.
2018-08-18 18:44:31 -04:00
f8d46f8f3d
Merge branch 'master' into AppleDelay
2018-08-18 14:11:21 -04:00
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
7f0f17f435
Merge pull request #523 from TomHarte/Further65C02
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Further corrects 65C02 behaviour
2018-08-17 21:58:38 -04:00
0e7f54f375
Implements STP and WAI, and ensures all unimplemented 65C02 instructions are NOP for all 65C02s.
2018-08-17 21:49:06 -04:00
b3bdfa9f46
Corrected: it's three-cycle 65C02 branches that ignore interrupts, not two.
2018-08-16 20:47:49 -04:00
592ec69d36
Causes the 65C02 not to accept interrupts immediately after untaken branches.
2018-08-15 22:42:04 -04:00
60e00ddd02
Correction: the test for not skipping an operand fetch requires a 65C02.
2018-08-15 22:07:17 -04:00
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
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
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
ddf45a0010
Ensures NMI and RST reset D on 65C02s.
2018-08-14 19:49:14 -04:00
1eca4463b3
Ensures NMI can no longer usurp BRK on 65C02s.
2018-08-14 19:33:48 -04:00
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
4d1d19a464
Introduces an intermediate buffer for Apple II video data.
2018-08-12 20:36:08 -04:00
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
cb47575860
Eliminates stdout chatter.
2018-08-11 22:57:54 -04:00
434d184503
Corrects deserialisation order in double low res mode.
2018-08-11 22:53:06 -04:00
7374c665e8
Corrects regression in video flushing.
2018-08-11 19:57:39 -04:00
10c930a59d
Merge pull request #520 from TomHarte/EnhancedIIe
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Adds Enhanced IIe emulation.
2018-08-11 19:42:47 -04:00
60ab6f0c2a
Entrusts IIe-esque character logic fully to the ROM.
2018-08-11 18:45:39 -04:00
a13eb351da
Implements the Enhanced IIe, other than some text selection errors.
2018-08-11 10:26:30 -04:00
4b91910fab
Removes erroneous addition.
2018-08-10 23:27:09 -04:00
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
878c63dcd2
Ensures ADC and SBC decimal take an extra cycle on the 65C02.
2018-08-10 22:52:55 -04:00
Thomas Harte
Thomas Harte