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Author SHA1 Message Date
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7017324d60 r_step is obsolete now that I know that [DD/FD]CB don't have a refresh cycle. 2021-04-13 22:17:30 -04:00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
Thomas Harte
400f54e508 Introduces failing test for bit b, (hl). 2021-04-10 12:04:48 -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
b09c5538c6 Adds failing test for simple (ii+n) tests. 2021-04-09 21:28:35 -04:00
Thomas Harte
ce3d2913bf Advances to 9 source table rows tested out of 37. 2021-04-09 20:38:17 -04:00
Thomas Harte
87202a2a27 Add two further tests, add checking of collected data size for all tests. 2021-04-09 18:32:03 -04:00
Thomas Harte
818a4dff25 Corrects ADD HL, dd test. 
Or, at least, likely corrects. The bus cycle breakdown in the Z80 data sheet implies these accesses should come after completion of the refresh cycle, not during its long tail, so I think +1 is correct.
 2021-04-08 22:23:15 -04:00
Thomas Harte
eacffa49f5 Exposes IR during 'internal' operations. 2021-04-08 22:22:26 -04:00
Thomas Harte
9e506c3206 Adds failing ADD hl, dd test. 2021-04-08 22:19:22 -04:00
Thomas Harte
29cf80339a Corrects too-short buffer. 2021-04-08 22:15:03 -04:00
Thomas Harte
50f53f7d97 Adds INC/DEC rr and LD SP, HL tests. 2021-04-08 22:14:53 -04:00
Thomas Harte
73fbd89c85 Correct opcodes, ability to terminate on a single-cycle contention. 2021-04-08 22:09:33 -04:00
Thomas Harte
f74fa06f2d Introduces failing test for LD [A/I/R], [A/I/R]. 2021-04-08 20:28:55 -04:00
Thomas Harte
ee989ab762 Fills in the rest of the simple two-byte instructions. 2021-04-08 20:13:52 -04:00
Thomas Harte
818655a9b6 Starts on two-bus-cycle instructions, correcting validators. 2021-04-08 20:01:46 -04:00
Thomas Harte
57a7e0834f Corrects sampling of MREQ. 2021-04-08 19:21:35 -04:00
Thomas Harte
cd787486d2 Tests all of the single-byte, no-access opcodes. 2021-04-07 22:07:52 -04:00
Thomas Harte
67fd6787a6 Builds what I think I need to validate Z80 address, MREQ, IOREQ and RFSH. 2021-04-07 21:57:40 -04:00