Thomas Harte
|
93b0839036
|
Knocks out some transfer operations.
I'm possibly only seven or eight away from being able to test with complete official-opcode-only 6502 code?
|
2020-10-06 22:29:34 -04:00 |
|
Thomas Harte
|
e068cbc103
|
Implements CMP and fixes a zero-flag error on 16-bit operations.
|
2020-10-06 21:47:26 -04:00 |
|
Thomas Harte
|
5c809e5fbf
|
Implements rolls and shifts.
|
2020-10-06 21:34:39 -04:00 |
|
Thomas Harte
|
3933bf49cf
|
Implements BRL.
|
2020-10-06 21:28:54 -04:00 |
|
Thomas Harte
|
7065ba4857
|
Implements the single-byte branches.
|
2020-10-06 21:24:43 -04:00 |
|
Thomas Harte
|
ebff83018e
|
Implements the bitwise operators.
|
2020-10-06 20:17:03 -04:00 |
|
Thomas Harte
|
9ce9167e3c
|
Formalises work left to do.
|
2020-10-06 19:12:19 -04:00 |
|
Thomas Harte
|
993eff1d3d
|
Starts slowly, with flag manipulation.
|
2020-10-06 16:25:30 -04:00 |
|
Thomas Harte
|
18e8d6ce06
|
Makes an effort to factor out the 6502's [lazy] flags.
This is preparatory to deciding which instructions, if any, are worth factoring out.
|
2020-10-05 22:23:33 -04:00 |
|
Thomas Harte
|
b7ba0d4327
|
Attempts to complete all addressing modes.
So, if bugs didn't exist, it'd just be members of the Operation enum to go.
|
2020-10-05 17:04:57 -04:00 |
|
Thomas Harte
|
825201f4f2
|
Adds direct indirect.
|
2020-10-04 22:11:41 -04:00 |
|
Thomas Harte
|
9a05c68ce7
|
Attempts direct and direct indexed indirect.
|
2020-10-04 22:06:25 -04:00 |
|
Thomas Harte
|
d8dccf2500
|
Attempts a full implementation of MVN and MVP.
|
2020-10-04 19:21:04 -04:00 |
|
Thomas Harte
|
b416aa640f
|
Slightly tidies up, eliminating some store bugs.
|
2020-10-04 19:12:04 -04:00 |
|
Thomas Harte
|
4ebf594b3b
|
This should bring me up to absolute, y.
i.e. next is datasheet program 7.
|
2020-10-04 19:02:47 -04:00 |
|
Thomas Harte
|
8a83024962
|
Starts a dash towards just completing the addressing modes for now.
This brings me up to the end of absolute long (i.e. 4a on the datasheet).
|
2020-10-04 18:52:46 -04:00 |
|
Thomas Harte
|
bdc1136b96
|
Edges towards working short absolute addressing mode.
|
2020-10-03 21:30:24 -04:00 |
|
Thomas Harte
|
b83d93abc2
|
Accepts that whether instructions do 8- or 16-bit bus accesses depends on either M or X depending on the operation.
|
2020-10-02 17:08:30 -04:00 |
|
Thomas Harte
|
78b3ec4b10
|
The actual work begins: starts implementing 65816 micro-ops.
|
2020-09-29 18:42:07 -04:00 |
|
Thomas Harte
|
ef1a514785
|
Introduces 6502Selector, for picking either a 6502 or a 65816 based on a single template parameter.
|
2020-09-28 21:35:46 -04:00 |
|
Thomas Harte
|
6635876e7e
|
Performs a bare factoring out of the 6502 bus handler.
|
2020-09-28 18:43:53 -04:00 |
|
Thomas Harte
|
5645f90abe
|
Takes a minor first step towards actually performing 65816 instructions.
|
2020-09-27 22:20:58 -04:00 |
|