28 lines
578 B
NASM
28 lines
578 B
NASM
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#set_pixel:
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# #a0=x, a1=y
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# addi t0, zero, LEDS #t0 : led adress
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# addi t1, a0, 0 #t1 : counter of x led index
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# addi t2, zero, 0 #t2 : LED word
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# addi t3, zero, 1 #t3 : pixel
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# addi t4, zero, 0 #t4 : counter of x led words
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# addi t5, zero, 0 #t5 : counter of x pos in word
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# addi t7, zero, 8 #t7 : 8, x shift of byte
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#get_pixel_address:
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# addi t5, t1, 0
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# addi t1, t1, -4
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# addi t4, t4, 4
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# bge t1, zero, get_pixel_address
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#
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# addi t4, t4, -4
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# add t0, t0, t4
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# ldw t2, 0 (t0)
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#
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# slli t7, t5, 3
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# add t7, t7, a1
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# sll t3, t3, t7
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# or t2, t2, t3
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#
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# stw t2, 0 (t0)
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# ret
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