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-rw-r--r--digital/io/src/simu.host.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/digital/io/src/simu.host.h b/digital/io/src/simu.host.h
index f885a1c5..09dade39 100644
--- a/digital/io/src/simu.host.h
+++ b/digital/io/src/simu.host.h
@@ -32,6 +32,8 @@
extern uint8_t PORTC, PINC;
+extern uint8_t PORTD, PORTG, DDRC, DDRD, DDRG;
+
/** Hooked, do nothing. */
void
switch_init (void);