PSW_MASK_ASC
if ((data & PSW_MASK_ASC) == PSW_ASC_HOME)
if ((regs->psw.mask & PSW_MASK_ASC) == PSW_ASC_HOME)
(regs->psw.mask & ~PSW_MASK_ASC);
(PSW_USER_BITS & PSW_MASK_ASC) |
(regs->psw.mask & ~PSW_MASK_ASC);
(PSW_USER_BITS & PSW_MASK_ASC) |
(regs->psw.mask & ~PSW_MASK_ASC);
(newpsw.mask & PSW_MASK_ASC) == (oldpsw.mask & PSW_MASK_ASC) &&