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82 Commits

Author SHA1 Message Date
Thomas Harte
6a2db52adb Ensures safe Megacart cartridge sizes too. 2018-10-18 21:09:05 -04:00
Thomas Harte
34e13d0d4d Clears top bit when reading the keypad and ensures no undefined behaviour reading the cartridge. 2018-10-18 21:05:58 -04:00
Thomas Harte
d9e65cd758 Ensures neither the ColecoVision nor the MSX processes mid-cycles. 2018-09-21 22:53:35 -04:00
Thomas Harte
e7f4babf41 Starts taking steps towards SMS/GG and V9938/9958 support. 
Specifically: routine namespace stuff, plus the intention to move to a table-based operation+cost version of timing. Reordering works fine for the TMS, and probably would also for the SMS/GG, but it'd be problematic with the command engine of the V9938/9958 and maintaining a consistent set of code is easier.
 2018-09-17 22:59:16 -04:00
Thomas Harte
0897210969 Neither cartridge machine should be a media target; their media can't be changed at runtime. 2018-07-10 21:40:13 -04:00
Thomas Harte
7e58a44771 Renames ConfigurationTarget to MediaTarget as per its newly-reduced interface. 2018-07-10 21:32:28 -04:00
Thomas Harte
3862fdb44c Simplifies initialisation procedure for all machines. 
With the side effect of allowing every machine to try to load only the ROMs that it needs.
 2018-07-10 20:00:46 -04:00
Thomas Harte
2954373115 Introduces an intermediary for digital <-> analogue conversion. 2018-06-11 21:35:03 -04:00
Thomas Harte
3ea2a4ccb8 Moves the joystick class towards accepting analogue inputs. 2018-06-10 20:45:52 -04:00
Thomas Harte
b3f4d0ed8c Imposes a three-cycle penalty for SN76489 access. 
This is my reading of (i) the SN76489 data sheet; plus (ii) the ColecoVision schematic.
 2018-05-16 19:06:03 -04:00
Thomas Harte
0b771ce61a Removes all instances of the copyright symbol. 2018-05-13 15:19:52 -04:00
Thomas Harte
e92e06a5f4 Doubled down on the ROMMachine::ROMFetcher typedef. 2018-04-23 20:20:14 -07:00
Thomas Harte
33281b9d89 Introduces S-Video as a video signal type at the interface level. 2018-03-30 10:25:41 -04:00
Thomas Harte
a301964bd0 Ensures all audio queues are fully merged before machine destruction. 
Thereby avoids a race condition.
 2018-03-22 21:59:19 -04:00
Thomas Harte
78eaecb29e Provides the proper framework for encapsulation of analyser target specifics. 
... while making them a safe container for objects too. Uses the ZX80/81 as the pilot platform.
 2018-03-09 15:36:11 -05:00
Thomas Harte
03501df9e5
Merge pull request #365 from TomHarte/CartridgeDetermination 
Works towards eliminating the special cases for Atari 2600 ROM handling.
 2018-03-08 18:40:58 -05:00
Thomas Harte
1804ea6849 Ensures the ColecoVision and MSX account for instruction lengths in advance when timing secondary components. 2018-03-07 17:00:18 -05:00
Thomas Harte
c8657e08f4 Merge remote-tracking branch 'origin/master' into CartridgeDetermination 2018-03-07 16:42:16 -05:00
Thomas Harte
9abc020818 Corrects potential ColecoVision SGM AY timing issues. 2018-03-07 16:16:58 -05:00
Thomas Harte
c82af4b814 Introduces get_confidence for the ColecoVision. 
Based almost entirely on joypad accesses for now.
 2018-03-06 19:06:35 -05:00
Thomas Harte
3c5a8d9ff3 Adds Super Game Module support for the ColecoVision. 2018-03-03 13:08:33 -05:00
Thomas Harte
bdfc36427c Implements MegaCart support. 2018-03-02 18:40:01 -05:00
Thomas Harte
86239469e7 Allows SN76489 consumers to apply an additional divider that reduces computation. 2018-03-01 18:51:05 -05:00
Thomas Harte
7890506b16 Gives the SN76489 its proper dividers and personalities. 2018-02-28 22:36:03 -05:00
Thomas Harte
87760297fc Fixes underpumping of SN76489. 
Audio works now. Though I still need properly to confirm who owns dividers in practice. I think probably all division should be within the SN.
 2018-02-27 22:59:29 -05:00
Thomas Harte
d4df101ab6 Makes a first attempt at implementing the SN76489. 2018-02-27 22:25:12 -05:00
Thomas Harte
0ad2676640 Adds a class for the SN76489 and wires it into the ColecoVision. 2018-02-26 22:04:34 -05:00
Thomas Harte
a074ee2071 Possibly fixes ColecoVision input mapping. 
Also provides symbolic input from the Mac.
 2018-02-25 22:47:47 -05:00
Thomas Harte
204d5cc964 Extends JoystickMachine protocol to cover ColecoVision use case. 
Also thereby implements input on the ColecoVision, in theory at least. No input is being fed though, so...
 2018-02-25 19:08:50 -05:00
Thomas Harte
23d15a4d6c The ColecoVision now accepts and loads cartridges. 2018-02-24 18:26:44 -05:00
Thomas Harte
23c47e21de Proceeds the ColecoVision to booting. 2018-02-24 18:14:38 -05:00
Thomas Harte
5530b96446 Wired up a class and analyser for a ColecoVision. 2018-02-23 22:47:15 -05:00