919dacb22088a134db1058ee4afebf958f620730

the mega8/16/32 don't have ADCSRB, this lead to a crash when we tried to
register a callback on it.

Signed-off-by: Michel Pollet <buserror@gmail.com>

diff --git a/simavr/sim/avr_adc.c b/simavr/sim/avr_adc.c
index a8cd7e0f7304cfb8398106729135df8de37160bb..3508bd0f0ffb7df2bcd929e7a87f62222c89c5e5 100644 (file)
--- a/simavr/sim/avr_adc.c
+++ b/simavr/sim/avr_adc.c
@@ -343,6 +343,7 @@ void avr_adc_init(avr_t * avr, avr_adc_t * p)
        avr_io_setirqs(&p->io, AVR_IOCTL_ADC_GETIRQ, ADC_IRQ_COUNT, NULL);
 
        avr_register_io_write(avr, p->r_adcsra, avr_adc_write_adcsra, p);
+       // some ADCs don't have ADCSRB (atmega8/16/32)
        if (p->r_adcsrb)
                avr_register_io_write(avr, p->r_adcsrb, avr_adc_write_adcsrb, p);
        avr_register_io_read(avr, p->r_adcl, avr_adc_read_l, p);