sca_reg
#define sca_in(reg, card) inb(sca_reg(reg, card))
#define sca_out(value, reg, card) outb(value, sca_reg(reg, card))
#define sca_inw(reg, card) inw(sca_reg(reg, card))
#define sca_outw(value, reg, card) outw(value, sca_reg(reg, card))