Initial work on decoder

Decode the LD SP, $nnnn instruction as our first three-byte instruction.
2021-02-16 21:13:50 +00:00
parent 3191a19f7e
commit aa92344d10
7 changed files with 130 additions and 19 deletions
--- a/rtl/cpu/cpu_pkg.svh
+++ b/rtl/cpu/cpu_pkg.svh
@@ -4,7 +4,10 @@ package cpu_pkg;
        ST0_ADDR,
        ST1_DEC,
        ST2_EXEC,
-        ST3_INC_ADDR
+        ST2_DEC,
+        ST3_INC_ADDR,
+        ST3_DEC,
+        ST4_EXEC
    } state_t;

 endpackage