URL https://opencores.org/ocsvn/eco32/eco32/trunk

Subversion Repositories eco32

[/] [eco32/] [trunk/] [simtest/] [rom/] [rom08.s] - Blame information for rev 267

Go to most recent revision | Details | Compare with Previous | View Log


;
; rom08.s -- string output with delay loop
;
 
; $8  I/O base address
; $9  temporary value
; $10 character
; $11 pointer to string
; $31 return address
 
        .set    oba,0xF0300000
 
        add     $8,$0,oba
        add     $11,$0,hello
loop:
        ldbu    $10,$11,0
stop:
        beq     $10,$0,stop
        jal     out
        add     $11,$11,1
        jal     delay
        j       loop
 
out:
        stw     $10,$8,12
        jr      $31
 
delay:
        add     $9,$0,0x00200000
del1:
        sub     $9,$9,1
        bne     $9,$0,del1
        jr      $31
 
hello:
        .byte   "Hello, world!", 0x0D, 0x0A, 0

Line No.	Rev	Author	Line
1	37	hellwig	`;`
2			`; rom08.s -- string output with delay loop`
3			`;`
4
5			`; $8 I/O base address`
6			`; $9 temporary value`
7			`; $10 character`
8			`; $11 pointer to string`
9			`; $31 return address`
10
11			`.set oba,0xF0300000`
12
13			`add $8,$0,oba`
14			`add $11,$0,hello`
15			`loop:`
16			`ldbu $10,$11,0`
17			`stop:`
18			`beq $10,$0,stop`
19			`jal out`
20			`add $11,$11,1`
21			`jal delay`
22			`j loop`
23
24			`out:`
25			`stw $10,$8,12`
26			`jr $31`
27
28			`delay:`
29			`add $9,$0,0x00200000`
30			`del1:`
31			`sub $9,$9,1`
32			`bne $9,$0,del1`
33			`jr $31`
34
35			`hello:`
36			`.byte "Hello, world!", 0x0D, 0x0A, 0`

Browse

Tools

Subversion Repositories eco32

[/] [eco32/] [trunk/] [simtest/] [rom/] [rom08.s] - Blame information for rev 267