b9a791ab30
Atari 2600: Added support to read UDLR from controller
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M6532: Gives controller data to game program
TIA: Fixed player reflecting error
2012-03-12 21:16:38 +00:00
5e69d7503e
TIA: Added blanking when HMOVE occurs.
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Implemented playfield copying (fixes some Pacman display issues).
Added a document which discusses the inner workings of the TIA on a circuit level.
M6532: Added stubs for several registers, and changed the returns for some. Pitfall's first screen now renders correctly, and the copyright message scrolls.
2012-03-12 18:44:29 +00:00
c72eef1abc
Atari 2600 TIA: added support for delayed graphics
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sketchily implemented cloning, enough to get pitfall to render
2012-03-11 08:43:45 +00:00
23cb513188
MOS6507: adjusted for instructions with a variable cycle count
2012-03-11 07:08:48 +00:00
84a11eacdf
Switched over to using the 6507 to allow for some modifications to the CPU
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MOS6507: now executes instructions on the last cycle. This corrects a syncing issue with the TIA
TIA: added ball data, partially implemented HMOVE, implemented VBLANK
2012-03-11 03:22:44 +00:00
3e67e78da2
Partially implemented player0 graphics, this time in a more organized fashion
2012-03-10 18:12:12 +00:00
8a73d50e0b
Basic implementation of player 0 graphics
2012-03-10 08:34:04 +00:00
0079d6ade5
Modified the TIA to be cycle based. Improved the rendering of pitfall in the process.
2012-03-10 04:53:23 +00:00
781ab15e1e
Partially implemented the M6532's timer capabilities
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Sketchy implementation of the TIA. But hey, it kind of renders pitfall!
2012-03-10 00:26:54 +00:00
3a6ac596bf
Add some atari mapper documentation
2012-03-09 19:35:49 +00:00
405af35d72
Started work on Atari 2600 core. Added stubs for the TIA and M6532 to be filled in later. Memory map is hard coded, but will only work for basic 4K carts like pitfall. That'll have to be changed later.
2012-03-08 08:12:44 +00:00
0f92deb140
Added an atari docs folder
2012-03-07 00:55:09 +00:00
c0ace9ce83
add a2600 core stub
2012-03-07 00:40:20 +00:00
pjgat09