如何在MIPS中将整数转换为字符？

Question

我想将整数值转换为字符，然后将该字符打印为“字符”。

# convert an word into bye and print it
.data
    integer: .word 1

.text
    la $a0, integer # load the address of 'integer' into $a0
    lw $t0, ($a0) # load the value stored in address
    addi $t0, $t0, 31 # convert digit to a character

    # print the character
    move $a0, $t0 # prepare the value for printing
    li $v0, 4 # syscall value for a character
    syscall

    # exit program
    li $v0, 10
    syscall

输出：

Assemble: assembling number_to_character.asm

Assemble: operation completed successfully.

Go: running number_to_character.asm

Error in number_to_character.asm line 13: Runtime exception at 0x00400018: 
address out of range 0x00000020

Go: execution terminated with errors.

程序似乎无法正常工作。可能是由于整数（单词）和字符（字节）之间的大小差异。