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https://opencores.org/ocsvn/eco32/eco32/trunk
Subversion Repositories eco32
[/] [eco32/] [trunk/] [binutils/] [tests-2/] [hello/] [hello.s] - Rev 63
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; ; hello.s -- Hello, world! ; ; $11 I/O base address ; $12 temporary value ; $13 character ; $14 pointer to string ; $29 stack pointer ; $31 return address .set tba,0xF0300000 reset: add $29,$0,0xC0010000 jal start reset1: j reset1 start: sub $29,$29,4 ; save return register stw $31,$29,0 add $11,$0,tba ; set I/O base address add $14,$0,hello ; pointer to string or $14,$14,hello loop: ldbu $13,$14,0 ; get char beq $13,$0,stop ; null - finished jal out ; output char add $14,$14,1 ; bump pointer j loop ; next char stop: ldw $31,$29,0 ; restore return register add $29,$29,4 jr $31 ; return out: ldw $12,$11,8 ; get status and $12,$12,1 ; xmtr ready? beq $12,$0,out ; no - wait stw $13,$11,12 ; send char jr $31 ; return hello: .byte "Hello, world!" .byte 0x0D, 0x0A, 0
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