Files
open-roms/c64/kernal/keyboard/pop_keyboard_buffer.s
T

21 lines
243 B
ArmAsm

// Pop key out of keyboard buffer
// Disable interrupts while reading from keyboard buffer
// so that no race conditions can occur
pop_keyboard_buffer:
ldy #$01
sei
!: lda KEYD,y
sta KEYD-1,y
iny
cpy XMAX
bne !-
dec NDX
cli
rts