ACMD_SD_SEND_OCR
c->c_argument = index == ACMD_SD_SEND_OCR ? 0 : slot->s_rca << 16;
if (sda_init_acmd(slot, ACMD_SD_SEND_OCR, 0, R3, &ocr) != SDA_EOK) {
if (sda_init_acmd(slot, ACMD_SD_SEND_OCR, ocr, R3, &r3) != 0) {