Thomas Harte
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0808e9b6fb
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Pulled the 6502 into a CPU namespace, making it an instance of something that has micro-opcodes and schedules them, and factoring out the formulation of a register pair.
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2017-05-14 22:08:15 -04:00 |
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Thomas Harte
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a26b87f348
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Fixed: mistake was failure to count ready cycles.
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2017-03-20 20:44:03 -04:00 |
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Thomas Harte
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4c3cc42c91
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This gives a very noisy version of the real audio.
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2017-03-20 20:38:29 -04:00 |
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Thomas Harte
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f3f4e1a541
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Made a first, hacky, attempt at audio.
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2017-03-20 19:35:51 -04:00 |
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Thomas Harte
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4722f6b5c4
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Fixed sprite disappearance: test should be applied predecrement, not post — it relates to the address being used this access, not the next one.
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2017-03-19 18:58:35 -04:00 |
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Thomas Harte
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7d8d1c7828
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Fixed 'random' number generator.
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2017-03-19 18:54:35 -04:00 |
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Thomas Harte
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4bb70e7d31
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Resetting the mask upon low byte write appears to resolve some issues.
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2017-03-19 18:49:37 -04:00 |
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Thomas Harte
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321030bb44
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Added a slightly faulty but seemingly 'close' version of masking.
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2017-03-19 18:28:06 -04:00 |
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Thomas Harte
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6c161b1150
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This gives something that might be the correct background.
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2017-03-19 17:49:48 -04:00 |
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Thomas Harte
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d5c37c8619
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Shushed a little, so as to be able to see a reasonable amount of output during my lifetime.
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2017-03-19 17:38:54 -04:00 |
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Thomas Harte
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7c66c36d3f
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Attempted at least to manage appropriate data storage.
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2017-03-19 17:31:08 -04:00 |
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Thomas Harte
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031a68000a
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Added a class to contain the Pitfall 2 pager and a skeleton of initial work.
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2017-03-18 22:08:47 -04:00 |
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Thomas Harte
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c3d82f88a5
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Tidied up and commented on the Activision stack implementation.
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2017-03-18 21:01:58 -04:00 |
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