Technical Sega.blogspot.com - Exclusive

We’ve all heard it: "Original hardware on a CRT has 1-2ms of lag." That’s physically impossible when you account for the 68k’s instruction cycle. The button interrupt on the 315-5313 ASIC doesn’t even sample the controller pins until V-Blank. That means worst-case delay is an entire frame (16.6ms) before the CPU acknowledges your jump.

The blog appears to be updated sporadically, with new posts added every few weeks or months. While not as frequent as some other blogs, the author's thorough research and analysis make each post well worth the wait. Technical Sega.blogspot.com