Something we need to be able to do is enable the interrupt for video. Generally, we only need one interrupt per frame, so what we need to do is set the interrupt bit in one of the instructions at the end of the last active scanline. The thing is, it's not adequate to make that a parameter to the programming function... we need to turn the interrupt on and off quite a lot, so what would be nice is to have another function to call that enables/disabled interrupts by rewriting the right instruction with the flag changed. The problem is that we need to somehow keep track of which instruction this is, for multiple cards with more than one video head each.
Perhaps it would just be simpler to always set the interrupt in the right instruction and have a mask bit in the global config registers. -- Timothy Normand Miller http://www.cse.ohio-state.edu/~millerti Open Graphics Project _______________________________________________ Open-graphics mailing list [EMAIL PROTECTED] http://lists.duskglow.com/mailman/listinfo/open-graphics List service provided by Duskglow Consulting, LLC (www.duskglow.com)
