6502/CLK
1
0
Fork 0
mirror of https://github.com/TomHarte/CLK.git synced 2024-12-02 02:49:28 +00:00
Code Issues Projects Releases Wiki Activity
7,403 Commits 10 Branches 121 Tags 498 MiB
38046d49aa
Commit Graph

7403 Commits

This Branch
This Branch
All Branches
Author SHA1 Message Date
Thomas Harte
687f4bb3bb Adds relative and relative long bus patterns. 
Many of the rest cover only one or two opcodes so this puts me at 216/256 opcodes covered; 35/47 bus programs; just more than 5/7 pages.
 2020-09-26 20:24:50 -04:00
Thomas Harte
473799cb62 There's not a lot to STP and WAI from a bus program point of view. 2020-09-26 20:18:30 -04:00
C.W. Betts
ce0536cdfa
Update 6502TimingTests.swift 2020-09-26 16:13:27 -06:00
Thomas Harte
3dc22a9fd5 Adds implied and immediate modes. 
... for 204/256 opcodes covered.
 2020-09-26 17:42:42 -04:00
Thomas Harte
f54b655606 Adds d, x and d, y. 2020-09-26 17:26:17 -04:00
Thomas Harte
d2e868ea2b Adds (d), y; [d], y; and [d]. 
Now covered: 146/256 opcodes, 4/7 pages, 25/47 bus programs.
 2020-09-26 16:55:58 -04:00
Thomas Harte
3fc649359a Transcribes the titles of all remaining bus programs. 
Thereby frames the distance yet to travel.
 2020-09-25 22:29:19 -04:00
Thomas Harte
1512ac11da Adds (d, x) and (d) modes. Albeit by deferring the hard work. 
That's: 122/256 opcodes; 22/47 bus programs, ~3.5/7 pages transcribed. Maybe I'll be able to get to the runtime stuff sooner rather than later?
 2020-09-25 22:22:30 -04:00
Thomas Harte
5039cc7bb2 Adds direct page. 
... to cover 106 opcodes.
 2020-09-25 22:01:36 -04:00
Thomas Harte
5360a7b4ce Adds block moves. 
These are fairly specialised, dealing in two data addresses simultaneously.
 2020-09-25 21:49:03 -04:00
Thomas Harte
2957a31f40 Adds absolute, x; absolute,y; and accumulator addressing modes. 
Now covered: 80/256 opcodes, from 2/6 pages of the data sheet; or 16/47 bus programs.
 2020-09-25 21:16:36 -04:00
Thomas Harte
8c11df52bf Adds absolute long, x. 
Factors out the commonality of a closing read/write while I'm here.
 2020-09-25 19:27:17 -04:00
Thomas Harte
2b7ffcd48f Takes a run at JSL al. 2020-09-25 18:35:00 -04:00
Thomas Harte
7980a9033e Adds two-thirds of absolute long. 
Working total: 31 opcodes covered; 10/47ths of bus patterns.

Next is JSL, which I think will require additional operations.
 2020-09-25 18:16:49 -04:00
Thomas Harte
125ddfa513 Pays a little attention to runtime storage; completes the first page of bus patterns. 2020-09-25 18:00:02 -04:00
Thomas Harte
636e929607 Adds a check for 8/16-bit redundancy. 2020-09-25 17:42:42 -04:00
Thomas Harte
22c792dc46 Adds enough logic to start serialising instructions to somewhere. 
Possibly extraneous for now, but it means I can start stepping and testing.
 2020-09-25 17:18:25 -04:00
Thomas Harte
95af1815c8 Completes absolute indexed indirect micro-ops. 
For the record: this is just six out of forty-seven codes complete. Or about two-thirds of six pages. Plenty to do even before I start trying to interpret these things.
 2020-09-24 22:37:31 -04:00
Thomas Harte
d707c5ac95 Switches to generators with stable pointers; adds 2a. 2020-09-24 22:27:20 -04:00
Thomas Harte
5c9192e5e6 Switches to generators for spitting out micro-ops. 
Hopefully with a lot of parts to factor out naturally.
 2020-09-24 17:36:11 -04:00
Thomas Harte
72b5584042 Immediately runs afoul of a read/write difference in the specs between 8/16-bit mode that suggests maybe this isn't a good structure. 
Perhaps generators of some sort?
 2020-09-23 22:28:15 -04:00
Thomas Harte
f9045b5352 Rounds out declaration of the absolutes. 2020-09-23 22:23:23 -04:00
Thomas Harte
f87fe92bc8 Begins a meandering road towards the 65816. 2020-09-23 22:14:42 -04:00
Thomas Harte
669d8e64ab
Merge pull request #838 from TomHarte/MTKViewRace 
Resolves a minor MTKView main-thread race condition.
 2020-09-22 22:18:57 -04:00
Thomas Harte
9447aa38be Removes debugging printf. 2020-09-22 22:13:54 -04:00
Thomas Harte
a781c3eb4d Resolves thread-unsafe access of _view.bounds. 2020-09-22 22:13:37 -04:00
Thomas Harte
c0b1308dfd Merge branch 'Vic20Tests' 2020-09-22 22:08:29 -04:00
Thomas Harte
2d9dd6704a Merge branch 'master' of github.com:TomHarte/CLK 2020-09-22 22:07:47 -04:00
Thomas Harte
94dba70bbe
Merge pull request #837 from TomHarte/Vic20Tests 
Further improves 6522 emulation.
 2020-09-22 22:07:34 -04:00
Thomas Harte
022ec20e75 Tries to add semantic meaning to the various auxiliary control fields. 
To consider: decoding at set?
 2020-09-22 20:50:39 -04:00
Thomas Harte
41f69405d8 Don't decrement timer 1 from the system clock when in PB6 mode. 
TODO: rest of PB6 mode.
 2020-09-21 22:39:49 -04:00
Thomas Harte
5741e22e29 Switch back to debug-by-default builds. 2020-09-20 18:22:13 -04:00
Thomas Harte
8e242eea54 Ensures timer-linked PB7 output is actually output. 2020-09-20 15:03:26 -04:00
Thomas Harte
703065a0a5 Takes a run at timer-linked PB7 output behaviour. 
Seemingly sufficiently to pass the VICE test (which I've transcribed), though with some guesswork.
 2020-09-20 14:51:59 -04:00
Thomas Harte
291aa42fe1 Corrects test target. 2020-09-19 21:20:37 -04:00
Thomas Harte
8fc3496cc9
Merge pull request #836 from TomHarte/Vic20Tests 
Corrects a couple of minor VIA timer issues
 2020-09-17 21:56:43 -04:00
Thomas Harte
e807a462a1 My new reading is that only a write to the counter should affect the interrupt flag. 2020-09-17 21:31:29 -04:00
Thomas Harte
18790a90ae Ensures timer 2 doesn't use timed behaviour when in pulse mode. 2020-09-17 21:09:32 -04:00
Thomas Harte
21afc70261 Adds formal data-sheet names. 2020-09-17 19:00:46 -04:00
Thomas Harte
7bb74af478
Merge pull request #835 from TomHarte/ErrantScan 
Allows for permitted 1/32nd timing error in `time_multiplier_`.
 2020-09-17 18:17:37 -04:00
Thomas Harte
894269aa06 Allows for permitted 1/32nd timing error in time_multiplier_. 2020-09-17 18:12:21 -04:00
Thomas Harte
8b16da9695
Merge pull request #834 from TomHarte/FloatingSpeaker 
Resolves lowpass-speaker position aliasing
 2020-09-16 19:05:54 -04:00
Thomas Harte
f783ec6269 Since input and output are floating point, using an integer Stepper is not appropriate. 2020-09-16 18:53:44 -04:00
Thomas Harte
22c9734874
Merge pull request #832 from TomHarte/MetalScanTarget 
Adds a Metal ScanTarget, for macOS.
 2020-09-16 18:19:58 -04:00
Thomas Harte
a17d0e428f Protects against some further uninitialised values. 2020-09-16 18:15:57 -04:00
Thomas Harte
bb57f0bcc7 Ensures all 6560 properties have a valid default value. 2020-09-16 17:24:18 -04:00
Thomas Harte
b1aefbfe85 Separates asserts. 2020-09-15 23:24:06 -04:00
Thomas Harte
061288f5a7 Add the Macintosh to the Mac kiosk mode informal test set. 2020-09-15 22:49:00 -04:00
Thomas Harte
5a53474536 Ensure MultiKeyboard deconstructs properly. 2020-09-15 22:48:44 -04:00
Thomas Harte
18d0fff8da
Graduates the Atari ST. 2020-09-15 22:46:38 -04:00