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Diffstat (limited to 'src/mess/drivers/pentagon.c')
-rw-r--r--src/mess/drivers/pentagon.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/mess/drivers/pentagon.c b/src/mess/drivers/pentagon.c
index 7a0be7731fe..d296ed4042e 100644
--- a/src/mess/drivers/pentagon.c
+++ b/src/mess/drivers/pentagon.c
@@ -120,6 +120,9 @@ WRITE8_MEMBER(pentagon_state::pentagon_port_7ffd_w)
if (m_port_7ffd_data & 0x20)
return;
+ if ((m_port_7ffd_data ^ data) & 0x08)
+ spectrum_UpdateBorderBitmap();
+
/* store new state */
m_port_7ffd_data = data;