In the original API, the 7up CR register could either update whether BG/SP are showing, OR enable interrupts, but not both. If one was set, the other would suffer.
This adds a eris_low_sup_setreg() function which allows to set a register's value directly, rather than piecemeal, avoiding that pitfall.
In the original API, the 7up CR register could either update whether BG/SP are showing, OR enable interrupts, but not both. If one was set, the other would suffer.
This adds a eris_low_sup_setreg() function which allows to set a register's value directly, rather than piecemeal, avoiding that pitfall.