Files
open-roms/c64/kernal/iec/iec_wait_for_data_pull.s
T

16 lines
198 B
ArmAsm

#if CONFIG_IEC
iec_wait_for_data_pull:
lda CIA2_PRA
// Check the highest bit, which is DATA IN,
// (highest bit set = negative value)
bmi iec_wait_for_data_pull
rts
#endif // CONFIG_IEC