The Bilestoad from Datamost, Mobygames lists it as a 1982 release, however it is listed in Softalk Dec 1983 and advertised in Feb 1984.

The title screen for the unmodified game has (C) 1983.

000004  4C 97 0B C2 D2 CF CB C5 CE A0 C2 D9 BA D4 C8 C5  LW.BROKEN BY:THE
000014  A0 CE CF D7 C8 C5 D2 C5 A0 CD C1 CE BC D4 C8 C5   NOWHERE MAN...?`
000034  60 00 01 00 01 00 01 00 01 00 01 00 01 00 01 00  `...............
000044  01 00 01 00 01 00 01 00 01 00 01 00 01 00 01 00  ................
000054  01 00 01 00 01 00 01 00 01 00 01 00 01 00 01 00  ................
000064  01 00 01 00 01 00 01 00 B9 28 04 F0 3E 85 FC C8  ........9(.p>E|H
000074  B9 28 04 85 EF 84 F1 20 E2 04 C6 EF D0 F9 A4 F1  9(.EoDq b.FoPy$q
000084  C8 D0 E5 D4 C8 C1 CE D8 A0 D4 CF BA D4 C8 C5 A0  HPeTHANX TO:THE 
000094  D0 D5 D3 C8 C5 D2 A0 A6 A0 D4 C8 C5 A0 C4 C9 D3  PUSHER & THE DIS
0000A4  CB A0 CA CF C3 CB C5 D9 A1 A0 A0 A8 B9 DA 04 8D  K JOCKEY!  (9Z.M