dfd97a7a7d9f8d1de1716f84174212c3760493e4

ATmega2560 has UDR0 at 0x136 = 310

diff --git a/simavr/sim/sim_avr.h b/simavr/sim/sim_avr.h
index 7a93b4dfb436521a4a4272c965e1bb3f4a70327f..1366cb5a0460a2009ef1216b3f60a88ae757bb4c 100644 (file)
--- a/simavr/sim/sim_avr.h
+++ b/simavr/sim/sim_avr.h
@@ -55,7 +55,7 @@ enum {
        R_SREG  = 32+0x3f,
 
        // maximum number of IO registers, on normal AVRs
-       MAX_IOs = 279,  // Bigger AVRs need more than 256-32 (mega1280)
+       MAX_IOs = 280,  // Bigger AVRs need more than 256-32 (mega1280)
 };
 
 #define AVR_DATA_TO_IO(v) ((v) - 32)