int32_t coreidx = target->coreid;
                LOG_DEBUG("%s's dbgbase is not set, trying to detect using the ROM table",
                          target->cmd_name);
-               retval = dap_get_debugbase(swjdp, 1, &dbgbase, &apid);
+               retval = dap_get_debugbase(swjdp, armv7a->debug_ap->ap_num, &dbgbase, &apid);
                if (retval != ERROR_OK)
                        return retval;
                /* Lookup 0x15 -- Processor DAP */
-               retval = dap_lookup_cs_component(swjdp, 1, dbgbase, 0x15,
+               retval = dap_lookup_cs_component(swjdp, armv7a->debug_ap->ap_num, dbgbase, 0x15,
                                &armv7a->debug_base, &coreidx);
                if (retval != ERROR_OK) {
                        LOG_ERROR("Can't detect %s's dbgbase from the ROM table; you need to specify it explicitly.",