https://c-faq.com/null/machexamp.html https://c-faq.com/null/machexamp.html > Depending on the ``memory model'' in use, 8086-family processors (PC compatibles)

https://c-faq.com/null/machexamp.html https://c-faq.com/null/machexamp.html > Depending on the ``memory model'' in use, 8086-family processors (PC compatibles) may use 16-bit data pointers and 32-bit function pointers, or vice versa. And it isn't just zero anyway because there's segmentation in play.