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Author SHA1 Message Date
Thomas Harte
6f4ccebfa1
Merge pull request #917 from TomHarte/InterruptAddress 
Put the program counter on the bus during interrupt acknowledge.
 2021-04-19 20:08:22 -04:00
Thomas Harte
77fcf52d27 Purely style: remove some redundant nullptrs. 2021-04-19 18:53:00 -04:00
Thomas Harte
79c2bc1fd7 Put the program counter on the bus during interrupt acknowledge. 2021-04-19 18:43:50 -04:00
Thomas Harte
76370d9418
Merge pull request #916 from TomHarte/OffByOne 
Corrects off-by-one timing errors in the ZX Spectrum.
 2021-04-18 20:25:13 -04:00
Thomas Harte
7bac18bd65 Address bus load time is not + 1/2. 2021-04-18 18:41:24 -04:00
Thomas Harte
704737144a Corrects all interrupt timing for sign and off-by-one errors. 2021-04-18 18:40:44 -04:00
Thomas Harte
2a9c73a1d3
Merge pull request #915 from TomHarte/SpectrumSDLOptions 
Adds display of Spectrum command-line options.
 2021-04-18 12:08:02 -04:00
Thomas Harte
e87e851401 Add a redundant but idiomatic initial value. 2021-04-18 11:56:22 -04:00
Thomas Harte
80d4846a27 Respond with 0xff during an interrupt acknowledge. 2021-04-18 11:56:00 -04:00
Thomas Harte
9fd53c9c91 Adds the ZX Spectrum to ::AllMachines. 2021-04-17 23:06:37 -04:00
Thomas Harte
53eae873d8
Merge pull request #913 from TomHarte/LowerModelTiming 
Brings timings into line with WoS specs.
 2021-04-16 22:45:54 -04:00
Thomas Harte
93422f4b1c Brings timings into line with WoS specs. 2021-04-16 22:40:51 -04:00
Thomas Harte
06cedb2e50
Merge pull request #912 from TomHarte/128kDecoding 
Corrects Spectrum 128kb partial decoding.
 2021-04-16 22:02:25 -04:00
Thomas Harte
7fdb1d848b Corrects Spectrum 128kb partial decoding. 2021-04-16 21:54:52 -04:00
Thomas Harte
246fd9442f
Merge pull request #911 from TomHarte/48kbSpectrum 
Adds the 48kb and 128kb Spectrums.
 2021-04-15 22:25:07 -04:00
Thomas Harte
eb99a64b29 Adds new Spectrum models to Qt UI. 2021-04-15 22:20:34 -04:00
Thomas Harte
d7954a4cb1 Tweaks timing a little. 2021-04-15 21:51:49 -04:00
Thomas Harte
ef636da866 Attempts 48/128kb floating bus behaviour. 2021-04-15 21:19:21 -04:00
Thomas Harte
fa18b06dbf Correct get_floating_value to be consistent in out-of-bounds behaviour. 2021-04-15 21:13:36 -04:00
Thomas Harte
349b9ce502 Don't post contended accesses other than on the +2a/+3. 
Those machines have an actual latch for this stuff, the others don't.
 2021-04-15 21:13:06 -04:00
Thomas Harte
b2cf121410 Regresses default to the more-compatible +2. 2021-04-15 19:31:45 -04:00
Thomas Harte
71cf63bd35 Corrects internal cycle contention. 2021-04-15 19:17:11 -04:00
Thomas Harte
d1bb3aada4 Attempts to complete the in-machine application of contention. 2021-04-15 18:57:34 -04:00
Thomas Harte
b4214c6e08 Blocks off the AY from inputs in 48kb mode. 2021-04-15 18:04:16 -04:00
Thomas Harte
f5c7746493 Extends fast loading support to the just-introduced models. 2021-04-15 17:31:42 -04:00
Thomas Harte
f10ec80153 Gets started on different video timings. 2021-04-14 22:23:27 -04:00
Thomas Harte
0af405aa46 Starts working in the 48kb and 128kb Spectrums. 2021-04-14 21:37:10 -04:00
Thomas Harte
cf481effa6
Merge pull request #910 from TomHarte/FastContention 
Establishes that the 48/128kb contention patterns can be derived from my partial machine cycles alone.
 2021-04-14 20:21:52 -04:00
Thomas Harte
a1511f9600 Establishes that the 48/128kb contention patterns can be derived from my partial machine cycles alone. 2021-04-14 20:15:40 -04:00
Thomas Harte
325e2b3941
Merge pull request #902 from TomHarte/Z80Lines 
Spell out, test and correct Z80 bus activity.
 2021-04-13 22:22:26 -04:00
Thomas Harte
7017324d60 r_step is obsolete now that I know that [DD/FD]CB don't have a refresh cycle. 2021-04-13 22:17:30 -04:00
Thomas Harte
deb5d69ac7 Consolidates macros. 2021-04-13 22:11:28 -04:00
Thomas Harte
68a04f4e6a Adds IN/OUT I/D [R] to complete tests. 2021-04-13 22:00:24 -04:00
Thomas Harte
0d61902b10 Adds CP[I/D/IR/DR] tests. 2021-04-13 20:03:11 -04:00
Thomas Harte
3eec210b30 Adds LDI/LDD/LDIR/LDDR tests. 2021-04-13 20:00:29 -04:00
Thomas Harte
5998f3b35b Corrects LD[I/D/IR/DR] timing. 
Macro cleanup to come.
 2021-04-13 20:00:18 -04:00
Thomas Harte
869567fdd9 Corrects EX (SP), HL breakdown. 2021-04-13 19:45:48 -04:00
Thomas Harte
2e70b5eb9f Advances to EX (SP), HL, leaving only [LD/CP/IN/OT][I/D]{R}. 2021-04-13 19:45:29 -04:00
Thomas Harte
8a3bfb8672 Adds an IN/OUT test. 2021-04-13 17:55:51 -04:00
Thomas Harte
06f1e64177 Advances to IO. 2021-04-12 21:41:20 -04:00
Thomas Harte
b42780173a Establishes that there really is no Read4 and Read4Pre distinction. 
Will finish these unit tests, then clean up.
 2021-04-12 20:54:10 -04:00
Thomas Harte
36c8821c4c Reaches the halfway point in tests. 2021-04-12 17:29:03 -04:00
Thomas Harte
947de2d54a Switches five-cycle read to a post hoc pause. 2021-04-12 17:17:08 -04:00
Thomas Harte
9347fe5f44 Advances to next failing test: LD (ii+n), n. 2021-04-12 17:11:58 -04:00
Thomas Harte
e82367def3 Switches to test-conformant behaviour for (IX/IY+n) opcode fetches. 2021-04-11 23:01:00 -04:00
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
47c5a243aa Restructures, the better to explore errors. 2021-04-10 21:32:42 -04:00
Thomas Harte
070e359d82 Introduces failing test for BIT b, (ii+n). 2021-04-10 18:00:23 -04:00
Thomas Harte
b397059d5e Moves read time in Read4Pre. 2021-04-10 17:54:20 -04:00