Create a custom themeThe next section is the vertical counter which works just like the horizontal counter. The input to the counter is the HRESET signal from the horizontal counter, so the vertical counter will increment once per horizontal scanline. The vertical counter, resets just like the horizontal, but on a count of 262, 256V + 4V + 1V + 1...
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DanBoris' Tech Blog
The next section is the vertical counter which works just like the horizontal counter. The input to the counter is the HRESET signal from the horizontal counter, so the vertical counter will increment once per horizontal scanline. The vertical counter, resets just like the horizontal, but on a count of 262, 256V + 4V + 1V + 1...
The next stage is the horizontal counter.
The 7 MHz clock signal enters F8 which is a 4-bit binary counter. The clock is divided in half producing the 1H signal which is the low bit of the horizontal counter. Each stage of F8 divides the signal in half again producing 2H, 4H, and 8H. F9 continues the division producing 16H,...
The 7 MHz clock signal enters F8 which is a 4-bit binary counter. The clock is divided in half producing the 1H signal which is the low bit of the horizontal counter. Each stage of F8 divides the signal in half again producing 2H, 4H, and 8H. F9 continues the division producing 16H,...
The heart of Pong, and any of the discrete logic games is the horizontal and vertical counter. These counters continuously step through each horizontal and vertical position on the screen. The output of the counters is fed to all the other logic of the game which ultimately determines if each pixel should be on or off (or what color it should be in the case...
One of the things that I have always enjoyed about classic videogames, and classic arcade games in particular is learning how the actually operated. I have spent many an hour studying schematics of these machines to figure out exactly how they work.
Of particular interest are the earliest arcade games, since these did not have microprocessors. The...
Of particular interest are the earliest arcade games, since these did not have microprocessors. The...
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