From 28c95d88c2af6c61e8bdc4421b50491d8c2dda0b Mon Sep 17 00:00:00 2001
From: OBattler <oubattler@gmail.com>
Date: Wed, 7 Apr 2021 23:47:00 +0200
Subject: [PATCH] The ALi M1487/89 now correctly clears SMI status on clearing
 bit 4 of register 0x30, fixes booting with 486DX2/iDX4.

---
 src/chipset/ali1489.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/chipset/ali1489.c b/src/chipset/ali1489.c
index 685327c12..47e7cbd9b 100644
--- a/src/chipset/ali1489.c
+++ b/src/chipset/ali1489.c
@@ -323,9 +323,10 @@ ali1489_write(uint16_t addr, uint8_t val, void *priv)
 							case 0x30:
 								picint(1 << 10);
 								break;
-							}
+						}
 						dev->regs[0x35] |= 0x0e;
-					}
+					} else if (!(val & 0x10))
+						dev->regs[0x35] &= ~0x0f;
 					break;
 
 				case 0x31:	/* Mode Timer Monitoring Events Selection Register I */