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6,867 Commits 8 Branches 121 Tags 497 MiB
c0a1c34012
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880 Commits

Author SHA1 Message Date
Thomas Harte
c0a1c34012 Wraps all registers into a struct, so that I can implement abort. 
Makes some preparations for ready too.
 2020-10-15 18:42:38 -04:00
Thomas Harte
3c6adc1ff4 Completes 65816 addressing mode tests and corresponding fixes. 2020-10-14 22:00:52 -04:00
Thomas Harte
e511d33a7c Adds test for [d], y; fixes implementation. 2020-10-14 21:42:41 -04:00
Thomas Harte
27afb8f0a7 Adds direct indirect long test, and thereby fixes addressing mode. 
Nine to go!
 2020-10-14 21:26:20 -04:00
Thomas Harte
327ab81436 Fills in direct, x and (direct) tests, fixing implementation of the latter. 
10 to go.
 2020-10-14 21:17:28 -04:00
Thomas Harte
b22aa5d699 Starts transcribing the addressing examples I have into tests. 
Correspondingly extends the exposed register set and test-machine addressing range.
 2020-10-13 21:38:30 -04:00
Thomas Harte
3e6a2adaaf Corrects absolute, x and absolute, y addressing modes. 2020-10-13 20:30:39 -04:00
Thomas Harte
8f5537aaaa Attempts to resolve my direct-indirect addressing stumble. 2020-10-13 20:21:53 -04:00
Thomas Harte
a15d4a156b Starts trying to ensure appropriate address wrapping. 2020-10-12 22:33:43 -04:00
Thomas Harte
7479dc74ed Removes printf. It's no longer telling me anything. 2020-10-12 21:52:58 -04:00
Thomas Harte
28da1a724a Introduces Jeek816 test case. 2020-10-12 21:43:44 -04:00
Thomas Harte
f529eadbec Corrects 16-bit read-modify-write. 
Subject to the TODO proviso on 'correct'; has my 6502 prejudice pushed me into unrealistic bus signalling?
 2020-10-12 18:36:09 -04:00
Thomas Harte
5dc3cd3a2f Starts using Jeek816 for a basic native-mode audit. Fixes absolute long addressing. 2020-10-11 22:02:46 -04:00
Thomas Harte
3039a445f0 Ups the 65816 test machine to a full 16mb RAM. 2020-10-11 21:18:01 -04:00
Thomas Harte
82797fd395 Attempts to do the proper thing for interrupts. 2020-10-11 21:10:44 -04:00
Thomas Harte
a0885ab7d0 Implements STP and WAI. 
Albeit still without fully-implemented reactions to exceptions in general.
 2020-10-11 17:56:55 -04:00
Thomas Harte
8eaf1303a3 Attempts proactively to ensure proper RTI behaviour on the 65816. 2020-10-11 15:25:13 -04:00
Thomas Harte
20cbe72985 Ties to 8- or 16-bit those instructions that aren't M/X-dependent. 
This is technically redundant for PEI, PEA and PER since they have dedicated bus programs anyway, but it's good to be explicit.
 2020-10-11 14:38:35 -04:00
Thomas Harte
071ad6b767 I don't think RTL is needed; JML looks like it covers it. 2020-10-10 22:16:35 -04:00
Thomas Harte
0619e49eac Takes a short at TSB and TRB. 
Three to go.
 2020-10-10 22:00:17 -04:00
Thomas Harte
b8848d8580 Implements TCD, TDC, TCS, TSC. 2020-10-10 21:43:05 -04:00
Thomas Harte
aface1f8be Implements XBA and XCE. 2020-10-10 21:34:22 -04:00
Thomas Harte
ae87728770 Ensures M and X are exposed to the public interface. 2020-10-10 21:33:56 -04:00
Thomas Harte
28c8ba70c1 Implements REP and SEP and exposes the MX flags generally. 2020-10-10 21:23:59 -04:00
Thomas Harte
6892ac13e8 Corrects BIT. All 65816-applicable Wolfgang Lorenz tests now pass. 2020-10-10 17:47:33 -04:00
Thomas Harte
0fe09cd1e4 Knocks SBC into producing likely results; disables Lorenz testing. 2020-10-10 17:13:16 -04:00
Thomas Harte
da4702851f Fixes ADC. 2020-10-10 16:29:48 -04:00
Thomas Harte
d17c90edf7 Corrects ROL d, x. 2020-10-10 11:25:14 -04:00
Thomas Harte
7966592fae Corrects ROL d. 2020-10-10 11:22:23 -04:00
Thomas Harte
6efe4e1753 Fixes AND, EOR, ORA. Takes an unsuccessful shot at ROL. 2020-10-10 10:53:17 -04:00
Thomas Harte
536c4d45c1 Adds additional 65816 tests, some failing; seeks to improve carry behaviour in ASL and ROL. 2020-10-10 10:11:57 -04:00
Thomas Harte
290598429a Applies indirect page zero emulation mode addressing constraint to ix addressing. 
Lorenz's LDA tests now pass in emulation mode.
 2020-10-09 23:22:48 -04:00
Thomas Harte
92e72959c3 Makes corrections to ix addressing mode and shift/roll flags. 2020-10-09 23:12:20 -04:00
Thomas Harte
c01bc784b9 Slightly reduces branching. 2020-10-09 22:21:55 -04:00
Thomas Harte
abcd86a294 Fixes accumulator instructions. 2020-10-09 22:18:22 -04:00
Thomas Harte
451f83ba51 Corrects emulation-mode read-modify-writes not to empty the data buffer. 2020-10-09 22:14:42 -04:00
Thomas Harte
b439f40fe2 Corrects INC and DEC. 2020-10-09 22:04:25 -04:00
Thomas Harte
968166b06d Resolves incorrectly flow after setting up an absolute address. 2020-10-09 21:48:35 -04:00
Thomas Harte
0ed98cbfac Attempts to fix direct indirect indexed; not yet successful I think. 2020-10-08 22:15:19 -04:00
Thomas Harte
7dde7cc743 Implements altered direct indexed addressing in emulation mode. 2020-10-08 22:02:14 -04:00
Thomas Harte
755627f12d Corrects direct addressing. 2020-10-08 20:00:01 -04:00
Thomas Harte
f8004d7096 Implements RTI, corrects TAY. 2020-10-08 18:06:11 -04:00
Thomas Harte
0418f51ef2 Takes a shot at emulation-mode 'exceptions'. 
It's just RTI and correct decimal SBC left of the official 6502s now, I think.
 2020-10-08 17:52:13 -04:00
Thomas Harte
054e0af071 Corrects RTS behaviour: the return address on the stack is off by one. 
Dormann's tests now proceed to a BRK.
 2020-10-08 16:55:45 -04:00
Thomas Harte
907c3374c3 Attempts to clean up my JMP/JSR mess. 
Also takes a step forwards in decimal SBC, but it's not right yet.
 2020-10-08 16:48:46 -04:00
Thomas Harte
f83ee97439 PHP pushes with the BRK flag set in emulation mode. 2020-10-07 21:37:50 -04:00
Thomas Harte
19aea85184 Corrects CMP, CPX, CPY carry flags. 2020-10-07 21:23:29 -04:00
Thomas Harte
1ba0a117e7 Corrects PLB, PLD, PLP. 2020-10-07 20:23:53 -04:00
Thomas Harte
b510b9d337 Adds PHD, PHK and 8-bit PHP and PLP. 2020-10-07 20:13:12 -04:00
Thomas Harte
b608e11965 Realises that not all non-incrementing PC fetches should be thrown away. 2020-10-07 20:06:27 -04:00