Its original jurisdiction extends to the issuance of writs of mandamus, certiorari, prohibition, habeas corpus, and all writs necessary or proper to the exercise of its appellate jurisdiction.

[(1-203) C.C.P. 1881, sec. 20; R.S., R.C., & C.L., sec. 3816; C.S., sec. 6444; I.C.A., sec. 1-203.]