diff --git a/bin/basic_generic.rom b/bin/basic_generic.rom
index b1f5d2b7..09d56837 100644
Binary files a/bin/basic_generic.rom and b/bin/basic_generic.rom differ
diff --git a/bin/basic_generic_crt.rom b/bin/basic_generic_crt.rom
index 6a7ebf06..5f210473 100644
Binary files a/bin/basic_generic_crt.rom and b/bin/basic_generic_crt.rom differ
diff --git a/bin/basic_ultimate64.rom b/bin/basic_ultimate64.rom
index f44b1632..1470ce44 100644
Binary files a/bin/basic_ultimate64.rom and b/bin/basic_ultimate64.rom differ
diff --git a/bin/extrom_generic_crt.crt b/bin/extrom_generic_crt.crt
index 3cbea24c..825e0590 100644
Binary files a/bin/extrom_generic_crt.crt and b/bin/extrom_generic_crt.crt differ
diff --git a/bin/kernal_generic.rom b/bin/kernal_generic.rom
index 9185ef3f..4412eb2c 100644
Binary files a/bin/kernal_generic.rom and b/bin/kernal_generic.rom differ
diff --git a/bin/kernal_generic_crt.rom b/bin/kernal_generic_crt.rom
index 90d615b6..f2c41ffc 100644
Binary files a/bin/kernal_generic_crt.rom and b/bin/kernal_generic_crt.rom differ
diff --git a/bin/kernal_ultimate64.rom b/bin/kernal_ultimate64.rom
index 7b087f03..5154b2a3 100644
Binary files a/bin/kernal_ultimate64.rom and b/bin/kernal_ultimate64.rom differ
diff --git a/bin/mega65.rom b/bin/mega65.rom
index 81c4cebc..9d0d0733 100644
Binary files a/bin/mega65.rom and b/bin/mega65.rom differ
diff --git a/bin/mega65_orfont.rom b/bin/mega65_orfont.rom
index 428e93a3..b50eece6 100644
Binary files a/bin/mega65_orfont.rom and b/bin/mega65_orfont.rom differ
diff --git a/src/kernal/iec/iec_tx_byte.s b/src/kernal/iec/iec_tx_byte.s
index 586bda40..feb4b112 100644
--- a/src/kernal/iec/iec_tx_byte.s
+++ b/src/kernal/iec/iec_tx_byte.s
@@ -42,7 +42,9 @@ iec_tx_byte:
 
 !ifdef CONFIG_MB_M65 { !ifndef CONFIG_IEC_JIFFYDOS {
 	; If in native mode, switch to 1 MHz
+	php
 	jsr m65_iec_slow
+	plp
 } }
 
 	; Store .X and .Y on the stack - preserve them