sub get_char(): (ch: uint8) is
@asm "jp __get_char";
end sub;

sub get_str(buf: [uint8]) is
@asm "jp __get_str";
end sub;

sub print_char(ch: uint8) is
@asm "jp __print_char";
end sub;

sub print(buf: [uint8]) is
@asm "jp __print";
end sub;

sub print_nl() is
@asm "jp __print_nl";
end sub;

sub print_i8(n: int8) is
@asm "jp __print_i8";
end sub;

sub print_i16(n: int16) is
@asm "jp __print_i16";
end sub;

sub print_hex_i8(n: int8) is
@asm "jp __print_hex_i8";
end sub;

sub print_hex_i16(n: int16) is
@asm "jp __print_hex_i16";
end sub;