From 20e4efc2234ad455b4289bbb340181797af5ce60 Mon Sep 17 00:00:00 2001
From: arbee <rb6502@users.noreply.github.com>
Date: Tue, 11 Jun 2024 22:35:09 -0400
Subject: apple/apple2e.cpp: Fix IOUDIS status read on apple2c.  Fixes
 self-test fail on apple2c0 (Github issue #12468). [R. Belmont, univta0001]

---
 src/mame/apple/apple2e.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mame/apple/apple2e.cpp b/src/mame/apple/apple2e.cpp
index 209ad1d0f0d..73bddb30d9d 100644
--- a/src/mame/apple/apple2e.cpp
+++ b/src/mame/apple/apple2e.cpp
@@ -2493,7 +2493,7 @@ u8 apple2e_state::c000_iic_r(offs_t offset)
 		case 0x7e:  // read IOUDIS
 			m_vbl = false;
 			lower_irq(IRQ_VBL);
-			return (m_ioudis ? 0x00 : 0x80) | uFloatingBus7;
+			return (m_ioudis ? 0x80 : 0x00) | uFloatingBus7;
 
 		case 0x7f:  // read DHIRES
 			return (m_video->get_dhires() ? 0x00 : 0x80) | uFloatingBus7;
-- 
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