Liam Middlebrook : krnl386.exe: Start DOSVM timer on GET_SYSTEM_TIME.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 4d58ee6a75f2db18ef5e67fcb9f718df7a269c1c
URL:    https://gitlab.winehq.org/wine/wine/-/commit/4d58ee6a75f2db18ef5e67fcb9f718d...

Author: Liam Middlebrook 
Date:   Sat Apr 13 11:10:21 2024 -0700

krnl386.exe: Start DOSVM timer on GET_SYSTEM_TIME.

Start the DOSVM tick timer when the GET_SYSTEM_TIME interrupt
(int 1a ah 00) is fired. This fixes a bug when running Sid Meier's
CIVILIZATION for Windows 3.1 where the game would appear to hang at the
launch screen (although sound would play as expected). This was due to
the BIOSDATA.Ticks field never being updated.

Signed-off-by: Liam Middlebrook

---

dlls/krnl386.exe16/interrupts.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/dlls/krnl386.exe16/interrupts.c b/dlls/krnl386.exe16/interrupts.c
index e062b497853..5087d1b7a03 100644
--- a/dlls/krnl386.exe16/interrupts.c
+++ b/dlls/krnl386.exe16/interrupts.c
@@ -549,6 +549,8 @@ static void WINAPI DOSVM_Int1aHandler( CONTEXT *context )
     case 0x00: /* GET SYSTEM TIME */
         {
             BIOSDATA *data = DOSVM_BiosData();
+
+            DOSVM_start_bios_timer();
             SET_CX( context, HIWORD(data->Ticks) );
             SET_DX( context, LOWORD(data->Ticks) );
             SET_AL( context, 0 ); /* FIXME: midnight flag is unsupported */