N bit wasn't getting set correctly in DIV in overflow cases

2023-10-10 21:04:01 -05:00 · 2023-10-10 21:04:01 -05:00 · 1f4e566c9f
commit 1f4e566c9f
parent aa80882389
1 changed files with 1 additions and 1 deletions
--- a/op07.py
+++ b/op07.py
@ -99,7 +99,7 @@ def op071_div(cpu, inst):
        q, rem = divmod(dividend, divisor)
        q *= posneg
        if q > 32767 or q < -32768:
-            cpu.psw_n = 0
+            cpu.psw_n = (q < 0)
            cpu.psw_z = 0
            cpu.psw_v = 1
            cpu.psw_c = 0