WOZ: fix obscure crash bug. (Fixes #1126)

2022-08-30 21:43:20 +01:00 · 2022-08-30 21:43:20 +01:00 · 3f40955306
parent 09c09a1278
commit 3f40955306
1 changed files with 6 additions and 0 deletions
--- a/source/Disk.cpp
+++ b/source/Disk.cpp
@ -1450,6 +1450,12 @@ void Disk2InterfaceCard::DataShiftWriteWOZ(WORD pc, WORD addr, ULONG uExecutedCy
 		return;
 	}

+	if (!drive.m_spinning)
+		return;
+
+	if (!floppy.m_trackimagedata)	// GH#1126
+		return;
+
 #if LOG_DISK_WOZ_SHIFTWRITE
 	LOG_DISK("T$%02X, bitOffset=%04X: %02X (%d bits)\n", drive.m_phase/2, floppy.m_bitOffset, m_shiftReg, bitCellRemainder);
 #endif