mamedev/mame — pull request #9 by plgDavid (2014-10-25 01:44:25+00:00)
Title: Support for the BEXT instruction (part2)

The BEXT instruction is needed for the Unisonic Champion driver which I'm building.
The Intellivision doesn't need it since its EBCA0, EBCA1,EBCA2 and EBCA3 pins are grounded.
The method used was a suggestion from RB