diff options
| -rw-r--r-- | alu.asm | 16 | ||||
| -rw-r--r-- | opcodes.asm | 26 |
2 files changed, 34 insertions, 8 deletions
@@ -64,3 +64,19 @@ alu_sub: sub d0,d1 move sr,(f_host_sr-flag_storage)(a3) rts + +alu_and: + ;; XXX do this + rts + +alu_xor: + ;; XXX do this + rts + +alu_or: + ;; XXX do this + rts + +alu_cp: + ;; XXX do this + rts diff --git a/opcodes.asm b/opcodes.asm index 2301c71..f1eaa8e 100644 --- a/opcodes.asm +++ b/opcodes.asm @@ -1219,8 +1219,6 @@ emu_op_7f: ;; Do an ADD \2,\1 - ;; XXX check this - ;; XXX make it shorter ... D: F_ADD_B MACRO ; 14 bytes? move.b \2,d1 move.b \1,d0 @@ -1358,8 +1356,7 @@ emu_op_8f: ;; Do a SUB \2,\1 - ;; XXX CHECK -F_SUB_B MACRO ; 22 bytes? +F_SUB_B MACRO move.b \2,d1 move.b \1,d0 bsr alu_sub @@ -1493,7 +1490,10 @@ emu_op_9f: F_AND_B MACRO - ;; XXX + move.b \2,d1 + move.b \1,d0 + bsr alu_and + move.b d1,\2 ENDM START @@ -1557,7 +1557,10 @@ emu_op_a7: F_XOR_B MACRO - ;; XXX + move.b \2,d1 + move.b \1,d0 + bsr alu_xor + move.b d1,\2 ENDM START @@ -1622,7 +1625,10 @@ emu_op_af: F_OR_B MACRO - ;; XXX + move.b \2,d1 + move.b \1,d0 + bsr alu_or + move.b d1,\2 ENDM START @@ -1687,7 +1693,11 @@ emu_op_b7: ;; COMPARE instruction F_CP_B MACRO - ;; XXX + ;; XXX deal with \2 or \1 being d1 or d0 + move.b \2,d1 + move.b \1,d0 + bsr alu_cp + ;; no result to save ENDM START |