232 lines
2.5 KiB
NASM
232 lines
2.5 KiB
NASM
MOV $0xFF0000,%SP
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#Set up vector mode
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MOV $0xFFFC,%R4l
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MOV $0x00FF,%R4h
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MOV $0xFFFF,%R1l
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MOV $0xFFFF,%R1h
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MOV %R1,(%R4)
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CALL $RENDER
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:RENDER
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MOV $>DATA_START,%R0l
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MOV $<DATA_START,%R0h
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MOV $0x000D,%R7l
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MOV $0x0000,%R7h
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MOV $0x0001,%R6l
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MOV $0x0000,%R6h
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MOV $0x0004,%R5l
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MOV $0x0000,%R5h
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:RENDER_LOOP
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MOV $0xFFFF,%R1l
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MOV $0xFFFF,%R1h
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MOV %R1,(%R4)
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#Read in a point R1:x R2:y R3:z
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MOV $0x3f4c,%R4h #0.8
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MOV $0xcccd,%R4l
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MOV (%R0),%R1
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ADD %R5,%R0
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MOV (%R0),%R2
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ADD %R5,%R0
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MOV (%R0),%R3
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ADD %R5,%R0
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FSUB %R4,%R1
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FSUB %R4,%R2
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MOV $0x3e99,%R4h
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MOV $0x999a,%R4l
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FADD %R4,%R3
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FADD %R4,%R3
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FADD %R4,%R1
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FADD %R4,%R2
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FDIV %R3,%R1
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FDIV %R3,%R2
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MOV $0xFFFC,%R4l
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MOV $0x00FF,%R4h
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MOV %R1,(%R4)
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MOV %R2,(%R4)
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MOV $0x3f4c,%R4h #0.8
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MOV $0xcccd,%R4l
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MOV (%R0),%R1
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ADD %R5,%R0
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MOV (%R0),%R2
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ADD %R5,%R0
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MOV (%R0),%R3
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ADD %R5,%R0
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FSUB %R4,%R1
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FSUB %R4,%R2
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MOV $0x3e99,%R4h
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MOV $0x999a,%R4l
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FADD %R4,%R3
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FADD %R4,%R3
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FADD %R4,%R1
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FADD %R4,%R2
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FDIV %R3,%R1
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FDIV %R3,%R2
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MOV $0xFFFC,%R4l
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MOV $0x00FF,%R4h
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MOV %R1,(%R4)
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MOV %R2,(%R4)
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SUB %R6,%R7
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JMP,NZ $RENDER_LOOP
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HALT
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:DATA_START
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#0,0,0
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DDW $0x00000000
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DDW $0x00000000
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DDW $0x00000000
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#0,0,1
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DDW $0x00000000
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DDW $0x00000000
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DDW $0x3f800000
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#0,0,0
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DDW $0x00000000
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DDW $0x00000000
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DDW $0x00000000
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#1,0,0
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DDW $0x3f800000
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DDW $0x00000000
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DDW $0x00000000
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#0,0,0
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DDW $0x00000000
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DDW $0x00000000
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DDW $0x00000000
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#0,1,0
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DDW $0x00000000
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DDW $0x3f800000
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DDW $0x00000000
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#1,1,1
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DDW $0x3f800000
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DDW $0x3f800000
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DDW $0x3f800000
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#1,1,0
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DDW $0x3f800000
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DDW $0x3f800000
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DDW $0x00000000
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#1,1,1
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DDW $0x3f800000
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DDW $0x3f800000
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DDW $0x3f800000
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#1,0,1
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DDW $0x3f800000
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DDW $0x00000000
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DDW $0x3f800000
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#1,1,1
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DDW $0x3f800000
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DDW $0x3f800000
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DDW $0x3f800000
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#0,1,1
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DDW $0x00000000
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DDW $0x3f800000
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DDW $0x3f800000
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#0,1,1
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DDW $0x00000000
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DDW $0x3f800000
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DDW $0x3f800000
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#0,1,0
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DDW $0x00000000
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DDW $0x3f800000
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DDW $0x00000000
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#0,1,1
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DDW $0x00000000
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DDW $0x3f800000
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DDW $0x3f800000
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#0,0,1
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DDW $0x00000000
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DDW $0x00000000
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DDW $0x3f800000
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#0,1,0
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DDW $0x00000000
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DDW $0x3f800000
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DDW $0x00000000
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#1,1,0
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DDW $0x3f800000
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DDW $0x3f800000
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DDW $0x00000000
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#0,1,0
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DDW $0x00000000
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DDW $0x3f800000
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DDW $0x00000000
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#1,1,0
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DDW $0x3f800000
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DDW $0x3f800000
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DDW $0x00000000
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#0,0,1
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DDW $0x00000000
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DDW $0x00000000
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DDW $0x3f800000
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#1,0,1
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DDW $0x3f800000
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DDW $0x00000000
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DDW $0x3f800000
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#1,0,0
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DDW $0x3f800000
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DDW $0x00000000
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DDW $0x00000000
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#1,1,0
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DDW $0x3f800000
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DDW $0x3f800000
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DDW $0x00000000
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#1,0,0
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DDW $0x3f800000
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DDW $0x00000000
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DDW $0x00000000
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#1,0,1
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DDW $0x3f800000
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DDW $0x00000000
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DDW $0x3f800000
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