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Billy Spelchan
Programmer and Game Developer
Programmer and Game Developer
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Now that the #6502 emulator is finished, I am taking a look at my future plans for this blog.
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My development blog for this fortnight covers the plans I have for porting my Coffee Quest series over to HTML5. As I am in a Masters program the time I have to work on this is very limited so this project is spread out over a longer period of time than I would like and this is the optimistic plan!
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This fortnight's emulator post finishes off the #6502 emulator by emulating the most important instructions, namely NOP and BRK. I explain why and how these instructions were used for debugging and implement the instructions (NOP is as easy, BRK is more challenging than it appears).
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My blog post for this week covers my release plans for the remainder of the year and my current thoughts for 2019.
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My emulator post for this fortnight. TLDR: What interrupts are, the vector table, and how the #6502 handles interrupts. The RTI instruction and its implementation in the emulator.
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My HTML5 eBook post for this fornight finishes the NIM game.
4.8 Winning and Losing
4.8 Winning and Losing
blazinggames.blogspot.com
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My #6502 emulator post for this fortnight. This time I cover the ROR and LSR commands, using them for unpacking data and working with multi-byte shifting. Finally the implementation.
Rotating and Shifting Bits right
Rotating and Shifting Bits right
homebrewgamejam.blogspot.com
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My development blog post continues the development of the NIM game and introduces the concept of states as we turn the core mechanics of the game into an actually playable game.
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My Emulator blog post for this fortnight continues the #6502 emulator portion of my 2600 emulator.TLDR: Shifting bits. Difference between Rotation and Arithmetic Shifting. Sample unpacking code, Multibyte shifting. Implementing the ROR and ASR commands.
Rotating and shifting bits Left
Rotating and shifting bits Left
homebrewgamejam.blogspot.com
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My HTML5 Games using Animate CC eBook section for this fortnight. TLDR: Removing the gems in the NIM game. Code for handling the buttons. The different removal techniques used and how they were assembled.
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