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-rw-r--r--src/mame/drivers/bitgraph.cpp6
1 files changed, 4 insertions, 2 deletions
diff --git a/src/mame/drivers/bitgraph.cpp b/src/mame/drivers/bitgraph.cpp
index 1e8376dc073..5704c439f54 100644
--- a/src/mame/drivers/bitgraph.cpp
+++ b/src/mame/drivers/bitgraph.cpp
@@ -109,6 +109,8 @@ public:
, m_screen(*this, "screen")
{ }
+ static constexpr feature_type imperfect_features() { return feature::KEYBOARD; }
+
DECLARE_READ8_MEMBER(pia_r);
DECLARE_WRITE8_MEMBER(pia_w);
DECLARE_READ8_MEMBER(pia_pa_r);
@@ -638,5 +640,5 @@ ROM_END
/* Driver */
// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
-COMP( 1981, bitgrpha, 0, 0, bitgrpha, bitgraph, bitgraph_state, 0, "BBN", "BitGraph rev A", ROT90 | MACHINE_IMPERFECT_KEYBOARD )
-COMP( 1982, bitgrphb, 0, 0, bitgrphb, bitgraph, bitgraph_state, 0, "BBN", "BitGraph rev B", ROT270 | MACHINE_NOT_WORKING|MACHINE_IMPERFECT_KEYBOARD )
+COMP( 1981, bitgrpha, 0, 0, bitgrpha, bitgraph, bitgraph_state, 0, "BBN", "BitGraph rev A", ROT90 )
+COMP( 1982, bitgrphb, 0, 0, bitgrphb, bitgraph, bitgraph_state, 0, "BBN", "BitGraph rev B", ROT270 | MACHINE_NOT_WORKING )