Thomas Harte
9cde7c12ba
Shifts responsibility for refresh into the fetch-decode-execute sequence.
2021-04-11 22:50:24 -04:00
Thomas Harte
015556cc91
Switch (ii+n) to Read4Pre.
2021-04-11 10:26:14 -04:00
Thomas Harte
b397059d5e
Moves read time in Read4Pre.
2021-04-10 17:54:20 -04:00
Thomas Harte
e0736435f8
Makes assumption that the address bus just holds its value during an internal operation.
2021-04-10 12:00:53 -04:00
Thomas Harte
eacffa49f5
Exposes IR during 'internal' operations.
2021-04-08 22:22:26 -04:00
Thomas Harte
945a9da94f
Adds further [[fallthrough]]s.
2020-06-19 23:44:20 -04:00
Thomas Harte
2477752fa4
Adds further [[fallthrough]] attributes.
2020-06-19 23:36:51 -04:00
Thomas Harte
267006782f
Starts to add Qt target; resolves many build warnings.
2020-05-30 00:37:06 -04:00
Thomas Harte
512a52e88d
Increases const correctness, marks some additional constructors as constexpr, switches std::atomic construction style.
2020-05-20 23:34:26 -04:00
Thomas Harte
11d936331d
Attempts to preserve scheduled_program_counter_.
2020-05-13 23:58:04 -04:00
Thomas Harte
7c9d9ee048
Adds basic Z80 state.
2020-05-13 20:15:22 -04:00
Thomas Harte
25996ce180
Further doubles down on construction syntax for type conversions.
2020-05-09 23:00:39 -04:00
Thomas Harte
b971e2a42c
Adds get_is_resetting to the Z80, eliminating the CPC's custom version.
2020-02-29 19:58:25 -05:00
Thomas Harte
01faffd5bf
Corrects memptr behaviour of OTIR/OTDR and INIR/INDR.
...
This seemingly perfects memptr.
2020-02-27 20:55:43 -05:00
Thomas Harte
26de5be07c
Corrects memptr behaviour of LDIR/LDDR and CPIR/CPDR.
2020-02-27 20:44:53 -05:00
Thomas Harte
87474d5916
Corrects memptr behaviour of OUT (C), 0.
2020-02-27 20:38:27 -05:00
Thomas Harte
06163165d9
Corrects memptr effect of LD rr, (nn).
2020-02-26 22:22:54 -05:00
Thomas Harte
ec82c075be
Fixes memptr for IN C, (C).
2020-02-26 22:19:37 -05:00
Thomas Harte
3b0df172a7
Corrects memptr behaviour of JP nn.
2020-02-26 22:02:15 -05:00
Thomas Harte
7058dbc3cc
Corrects memptr for LD HL, (nn).
2020-02-26 21:54:49 -05:00
Thomas Harte
b64de89d2d
Corrects JR memptrs.
2020-02-26 21:47:34 -05:00
Thomas Harte
8878396339
Corrects DJNZ memptr behaviour.
2020-02-26 21:42:31 -05:00
Thomas Harte
3097c4ccae
Improves MEMPTR testing and some results.
2020-02-24 23:32:18 -05:00
Thomas Harte
7959d243f6
Adds single-stepping. Of a kind.
2020-02-24 23:31:42 -05:00
Thomas Harte
3f3229851b
Implements MEMPTR for IN.
2020-02-23 00:32:33 -05:00
Thomas Harte
1c154131f9
Expands size of storage in Cycles/HalfCycles; adjusts widely to compensate.
2019-10-29 22:36:29 -04:00
Thomas Harte
4aeb9a7c56
Genericises RegisterPair.
2019-03-09 21:16:11 -05:00
Thomas Harte
0b14850467
Corrects some comments.
2018-06-24 23:02:36 -04:00
Thomas Harte
9a91ae38c1
Differentiates reasons for a read to be four cycles.
...
Specifically, puts the enforced wait either before or after checking the wait line. More research may be required; it feels more likely to me that a forced post wait should complete the read then wait, but would that still count as a single machine cycle?
2018-06-20 21:34:21 -04:00
Thomas Harte
ad9b0cd4e3
Eliminates all endashes.
2018-05-13 15:43:03 -04:00
Thomas Harte
0b771ce61a
Removes all instances of the copyright symbol.
2018-05-13 15:19:52 -04:00
Thomas Harte
45be1c19df
Resolves undefined behaviour of a signed shift left.
2018-03-22 21:59:39 -04:00
Thomas Harte
0e73ba4b3e
Introduces proper 5/3 SCF/CCF behaviour for the Z80.
...
While also `const`ing a bunch of things.
2018-03-09 09:47:00 -05:00
Thomas Harte
f0f9d5a6af
Corrects memptr leakage via BIT, and ld (de/bc/nn), A behaviour.
2018-03-08 20:30:22 -05:00
Thomas Harte
74dfe56d2b
Expands documentation of NMI setting.
...
Given that it was previously incorrect, explains logic behind request_status_ and last_request_status_ setting. Also takes the opportunity to ensure that NMI is 'sampled' at the same time as IRQ; whether the next thing should be the NMI routine now occurs one cycle before the end of any instruction. That's an assumption for now. Testing to come.
2018-03-02 11:10:02 -05:00
Thomas Harte
b02e4fbbf6
Corrects NMI receipt to be genuinely edge triggered.
...
Previously a caller that signalled NMI set multiple times would trigger multiple NMIs.
2018-03-01 22:04:56 -05:00
Thomas Harte
23c47e21de
Proceeds the ColecoVision to booting.
2018-02-24 18:14:38 -05:00
Thomas Harte
7dfbe4bb93
Ensures proper Boolean startup values for IFF1 and IFF2.
2017-11-29 20:32:55 -05:00
Thomas Harte
5aef81cf24
Commutes cross-platform #pragma marks to //MARK:s.
2017-11-12 15:59:11 -05:00
Thomas Harte
2e15fab651
Doubles down on <cX> over <X.h> for C includes, and usage of the namespace for those types and functions.
2017-11-11 15:28:40 -05:00
Thomas Harte
cb0f58ab7a
Corrects order-of-initialisation errors in the CPC (again), TextureBuilder, TextureTarget, Z80, MFM parser and binary tape player.
2017-11-10 22:57:03 -05:00
Thomas Harte
c0055a5a5f
Further builds up SConstruct, correcting many missed imports and a couple of improper uses of C99 in C++ code.
2017-11-09 22:04:49 -05:00
Thomas Harte
6e1d69581c
Eliminates a variety of end-of-line spaces.
2017-11-07 22:54:22 -05:00
Thomas Harte
ad9df4bb90
Commutes uint8_t *, uint16_t *, uint32_t *, size_t, off_t and long to functional-style casts.
2017-10-21 22:30:15 -04:00
Thomas Harte
e983854e71
Converts all uint8_t and uint16_t casts to the functional style.
2017-10-21 21:50:53 -04:00
Thomas Harte
45499050b6
Separates Z80Base.cpp into its component classes.
2017-09-04 11:04:01 -04:00
Thomas Harte
a1e200cc65
Further strips back the amount exposed in Z80-related headers.
...
Almost all opcode table generation macros and code now resides neatly in the world of .CPP.
2017-09-01 22:19:16 -04:00
Thomas Harte
e6ac939ae0
Reintroduces missing noexcept specifier.
2017-09-01 20:51:31 -04:00
Thomas Harte
b034d4e6f8
Refactors the Z80 to separate out interface and implementation.
...
Following the pattern just established by the 6502, puts all implementation specifics beyond the visibility of a human reading Z80.hpp and in subfolders so as to promote the idea that they shouldn't go out of their way.
2017-09-01 20:50:24 -04:00
