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-rw-r--r--src/mame/machine/fd1089.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mame/machine/fd1089.h b/src/mame/machine/fd1089.h
index 71fcc361d7a..0bf37ba75b9 100644
--- a/src/mame/machine/fd1089.h
+++ b/src/mame/machine/fd1089.h
@@ -55,7 +55,8 @@ protected:
void decrypt(offs_t baseaddr, UINT32 size, const UINT16 *srcptr, UINT16 *opcodesptr, UINT16 *dataptr);
// internal state
- const UINT8 * m_key;
+ required_memory_region m_region;
+ required_region_ptr<UINT8> m_key;
std::vector<UINT16> m_plaintext;
required_shared_ptr<UINT16> m_decrypted_opcodes;