hash_table:
	.data blablabla


parse_line:
	li 
	rw t0, 0(a0)
	srli t1, 18
	beqz end_of_line
	sub t1, t0, t1

end_of_line:

.char_encoding lbpc1

get_instruction:

a-z 0-9 () , space enter

li x2, 0 ; cursor position in line

listen:
iord x0, 1, 0 ; get char from keyboard (device 1, buffer 0)
beqz listen
sub x1, x0, 'a'
.eq diff 'z' - 'a'
bleu x1, diff, okay
sub x1, x0, '0'
.eq diff '9' - '0'
bleu x1, diff, okay

beq x0, ' ', okay
beq x0, '\n', okay
beq x0, '(', okay
beq x0, ')', okay
beq x0, ',', okay
b invalid_input

invalid_input:
iow 3, 1, 0o1214 ; play buzzing sound (sound card is device 3, play direct value command is 1)
b listen

okay:
iow 2, 2, x0, 0 ; print character x0 (gpu is device 2, print char command is 2)
addi x2, x2, 1 ; move cursor right