https://www.psx.amidog.se/ 2026-04-19T12:41:13+02:00 https://www.psx.amidog.se/ https://www.psx.amidog.se/lib/tpl/vector/images/favicon.ico text/html 2012-10-23T13:17:12+02:00 https://www.psx.amidog.se/doku.php?id=psx:cpu:division&rev=1350991032&do=diff The PSX has a few undefined cases when it comes to division. It's important to remeber that undefined isn't the same as inconsistent or unstable, and as a result, there are games out there which relies on this undefined behavior. The result of a division by zero is consistent with the result of a simple radix-2 (“one bit at a time”) implementation. That is, if the dividend is negative, the quotient is 1 (0x00000001), and if the dividend is positive or zero, the quotient is -1 (0xffffffff). In b…