Altair UIO Interrupts
Posted: April 8th, 2019, 4:09 am
To set the ACR board interrupt, you connect one of three pads to one of the eight interrupt priority level pads (0-7)
These pads are labeled OUT, IN and BH (for BotH)
The UIO also has three pads labeled RINT, WINT and SI. I figure RINT is Read INTerrupt (like IN) and WINT is Write INTerrupt (like OUT)
but I can't figure SI. Is that analogous to BH somehow?
If it is, I only need one wire connecting SI to the level I choose.
If not, then I need two: RINT to level and WINT to level.
These pads are labeled OUT, IN and BH (for BotH)
The UIO also has three pads labeled RINT, WINT and SI. I figure RINT is Read INTerrupt (like IN) and WINT is Write INTerrupt (like OUT)
but I can't figure SI. Is that analogous to BH somehow?
If it is, I only need one wire connecting SI to the level I choose.
If not, then I need two: RINT to level and WINT to level.