ceda2vga/src/vga.pio

.program vga_free_run

entrypoint_vga_free_run:
    pull
loop:
    out pins, 1 [2]
    jmp loop

.program vga_sync

entrypoint_vga_sync:
loop:
    set x, 31
    mov osr, x
    out pins, 1 [30]
    set x, 0
    mov osr, x
    out pins, 1 [30]
    jmp loop