Subversion Repositories eco32

;

; rom10.s -- output to console using every possible attribute

;

; $8 row number

; $9 column number

; $10 temporary

; $11 attribute/character

        .set    dsp_base,0xF0100000

        add     $8,$0,0                   ; start with row = 0

        add     $9,$0,0                   ; start with col = 0

        add     $11,$0,0x0000+'A'        ; char is always 'A'

next:

        ; addr = dsp_base + (row * 128 + column) * 4

        sll     $10,$8,7

        add     $10,$10,$9

        sll     $10,$10,2

        stw     $11,$10,dsp_base        ; write to display memory

        add     $11,$11,0x0100          ; next attribute (bits 15:8)

        add     $9,$9,1                 ; next col

        add     $10,$0,16

        bne     $9,$10,next

        add     $9,$0,0                   ; reset col

        add     $8,$8,1                 ; next row

        add     $10,$0,16

        bne     $8,$10,next

stop:

        j       stop