ie_sys_ctl_block
volatile struct ie_sys_ctl_block *scb;
scb = (volatile struct ie_sys_ctl_block *)where;
volatile struct ie_sys_ctl_block *scb = sc->scb;
volatile struct ie_sys_ctl_block *scb = sc->scb;
volatile struct ie_sys_ctl_block *scb;
volatile struct ie_sys_ctl_block *scb = sc->scb;
volatile struct ie_sys_ctl_block *scb = sc->scb;