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Author SHA1 Message Date
Thomas Harte
99f0233b76 Fix immediate offset and data processing operation. 2024-03-02 23:27:37 -05:00
Thomas Harte
62da0dee7f Unify reads. 2024-03-02 23:15:17 -05:00
Thomas Harte
1663d3d9d1 Introduce disaster of an attempted test run. 2024-03-02 22:40:12 -05:00
Thomas Harte
37499d493a Fix model name. 2024-03-02 21:47:09 -05:00
Thomas Harte
c0dd96eb7c Add a catalogue entry for RISC OS. 2024-03-02 21:44:27 -05:00
Thomas Harte
2abae4c8bf
Merge pull request #1349 from TomHarte/BarrelShifterTests 
Introduce barrel-shifter tests.
 2024-03-02 15:24:06 -05:00
Thomas Harte
c865da67e0 Introduce further barrel-shifter tests. 2024-03-02 15:12:03 -05:00
Thomas Harte
e6f77a9b80 Add logical right-shift tests. 2024-03-01 18:06:54 -05:00
Thomas Harte
7b28b3d634
Merge pull request #1343 from TomHarte/ARM2Ops 
Attempt an implementation of the ARM2 instruction set.
 2024-03-01 15:20:28 -05:00
Thomas Harte
42ba6d1281 Relocate execution code appropriately. 2024-03-01 15:02:47 -05:00
Thomas Harte
85b7afd530 Attempt a complete block data transfer. 2024-03-01 14:48:36 -05:00
Thomas Harte
f2f59a4de5 Attempt to deal with data aborts. 2024-03-01 10:38:08 -05:00
Thomas Harte
5759798ad7 Deal with downward write order. 2024-02-29 14:34:20 -05:00
Thomas Harte
ab1dd7f57e Implement a little of block data transfer. 2024-02-29 11:33:40 -05:00
Thomas Harte
53a2ea3a57 Add address exception. 2024-02-29 10:49:11 -05:00
Thomas Harte
1f1e7236be Add rotation. 2024-02-29 10:47:41 -05:00
Thomas Harte
fd2c5b6679 Make a quick first attempt at memory accesses. 2024-02-29 10:18:09 -05:00
Thomas Harte
0b287c55d5 Edge towards single data transfer. 2024-02-29 10:02:57 -05:00
Thomas Harte
0de8240238 Merge branch 'master' into ARM2Ops 2024-02-28 22:21:31 -05:00
Thomas Harte
1449b2a2a6
Merge pull request #1347 from TomHarte/AppleIIFlashRate 
Double Apple II flash rate.
 2024-02-28 22:21:05 -05:00
Thomas Harte
0f691766ee Double flash rate. 2024-02-28 22:13:22 -05:00
Thomas Harte
3ce05e9de1
Merge pull request #1346 from TomHarte/AppleIIReset 
Propagate reset to the auxiliary switches.
 2024-02-28 22:02:08 -05:00
Thomas Harte
98f5d0cdb7 Propagate reset to the auxiliary switches. 2024-02-28 21:36:55 -05:00
Thomas Harte
93b4008f81 Localise flags, detect improper carry write. 2024-02-28 21:28:19 -05:00
Thomas Harte
904462b881 Regularise data transfers. 2024-02-28 21:23:57 -05:00
Thomas Harte
3b320bcdef Update coprocessor interface. 2024-02-28 14:43:31 -05:00
Thomas Harte
3368bdb99f Document exceptions, partly for my future self. 2024-02-28 14:34:31 -05:00
Thomas Harte
4d400c3cb7 Add easy exceptions. 2024-02-28 14:25:12 -05:00
Thomas Harte
474f9da3c2 Add banked registers. 2024-02-28 14:09:05 -05:00
Thomas Harte
c49b26701f Relocate and clarify barrel shifts. 
With a view to independent testing.
 2024-02-28 13:53:13 -05:00
Thomas Harte
9b42d35d56 Update interface. 2024-02-28 11:42:33 -05:00
Thomas Harte
645152a1fd Implement branch. 2024-02-28 11:33:28 -05:00
Thomas Harte
487ade56ed Add basic multiply. 2024-02-28 11:27:27 -05:00
Thomas Harte
60d1b36e9a Implement registers side. 2024-02-28 10:25:14 -05:00
Thomas Harte
5a48c15e46 Add scheduler side of PC writeback. 2024-02-28 10:15:23 -05:00
Thomas Harte
d6bf1808f9 Take a swing at PC-as-input. 2024-02-28 09:33:05 -05:00
Thomas Harte
b676153d21 State intention to merge status with other registers. 2024-02-27 15:36:34 -05:00
Thomas Harte
a3339cf882 Fix indentation. 2024-02-27 15:30:51 -05:00
Thomas Harte
b4e0b46bac Add notes on R15. 2024-02-27 10:04:30 -05:00
Thomas Harte
09c1b2d7db Add missing shifts. 2024-02-27 09:55:24 -05:00
Thomas Harte
4255283e33 Deal with conditionality up front. 2024-02-26 21:36:23 -05:00
Thomas Harte
16e827bb2c Add basic arithmetics. 2024-02-26 21:27:58 -05:00
Thomas Harte
def69ce6d5 Add notes on R15. 2024-02-26 15:12:39 -05:00
Thomas Harte
054a799699 Fill in the easy 50% of operations. 2024-02-26 15:10:00 -05:00
Thomas Harte
580f402bb6 Muddle further towards data processing. 2024-02-26 14:50:45 -05:00
Thomas Harte
030dda34f0 Start poking at implementation. 2024-02-26 14:30:26 -05:00
Thomas Harte
cd21b39f44
Merge pull request #1342 from TomHarte/ARM2Status 
Add some degree of ARM 2 status flags.
 2024-02-26 10:48:24 -05:00
Thomas Harte
481b6d0e69 Sketch out some status flags. 2024-02-25 22:01:51 -05:00
Thomas Harte
a88d41bf00 List the flags. 2024-02-25 15:21:54 -05:00
Thomas Harte
0ee3b628e8
Merge pull request #1341 from TomHarte/AYEnvelopePeriod 
Correct envelope period for internal double-resolution.
 2024-02-24 15:38:17 -05:00