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Diffstat (limited to 'src/emu/debug/debugcpu.cpp')
-rw-r--r--src/emu/debug/debugcpu.cpp4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/emu/debug/debugcpu.cpp b/src/emu/debug/debugcpu.cpp
index 36f23a52825..01e165d7519 100644
--- a/src/emu/debug/debugcpu.cpp
+++ b/src/emu/debug/debugcpu.cpp
@@ -2841,9 +2841,9 @@ device_debug::watchpoint::watchpoint(device_debug* debugInterface,
if (end != rend)
{
if (endian == ENDIANNESS_LITTLE)
- emask &= make_bitmask<u64>((rend + subamask + 1 - end) * unit_size);
+ emask &= make_bitmask<u64>((subamask + 1 + end - rend) * unit_size);
else
- emask &= ~make_bitmask<u64>((end - rend) * unit_size);
+ emask &= ~make_bitmask<u64>((rend - end) * unit_size);
}
if (rend == (rstart | subamask) || smask == emask)