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

15 lines
226 B
ArmAsm

#if CONFIG_IEC
iec_set_idle:
lda CIA2_PRA
ora #BIT_CIA2_PRA_CLK_OUT // pull
and #$FF - BIT_CIA2_PRA_DAT_OUT - BIT_CIA2_PRA_ATN_OUT // release
sta CIA2_PRA
rts
#endif // CONFIG_IEC