Update comments in OTBN smoke test
Fixes #7336
Signed-off-by: Greg Chadwick <gac@lowrisc.org>
diff --git a/hw/ip/otbn/dv/smoke/smoke_test.s b/hw/ip/otbn/dv/smoke/smoke_test.s
index cbd3370..d9504ff 100644
--- a/hw/ip/otbn/dv/smoke/smoke_test.s
+++ b/hw/ip/otbn/dv/smoke/smoke_test.s
@@ -95,8 +95,7 @@
test_label_3:
-# until LID/SID implemented use mod WSR to load bignum registers with base li
-# psuedo-instruction
+# use mod WSR to load bignum registers with base li psuedo-instruction
# mod = 0x78fccc06_2228e9d6_89c9b54f_887cf14e_c79af825_69be586e_9866bb3b_53769ada
li x23, 0x78fccc06
csrrw x0, 0x7d7, x23
@@ -126,7 +125,8 @@
# w1 = mod = 0x78fccc06_2228e9d6_89c9b54f_887cf14e_c79af825_69be586e_9866bb3b_53769ada
bn.wsrr w1, 0x0 /* MOD */
-# rnd WSR gives fixed value for now
+# sim environment provides a fixed value for RND (in other environment RND isn't
+# fixed so this test will have a different final state)
# w2 = rnd = 0x99999999_99999999_99999999_99999999_99999999_99999999_99999999_99999999
bn.wsrr w2, 0x1 /* RND */
