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44 lines
898 B
NASM
44 lines
898 B
NASM
// Minimal struct with C-Standard behavior - call return value (not supported yet)
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.pc = $801 "Basic"
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:BasicUpstart(main)
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.pc = $80d "Program"
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.const OFFSET_STRUCT_POINT_Y = 1
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.label SCREEN = $400
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main: {
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.label point1 = 2
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.label point2 = 4
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// getPoint(2, 3)
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lda #3
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ldx #2
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jsr getPoint
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// getPoint(2, 3)
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// point1 = getPoint(2, 3)
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stx.z point1
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sta point1+OFFSET_STRUCT_POINT_Y
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// SCREEN[0] = point1.x
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txa
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sta SCREEN
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// SCREEN[1] = point1.y
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lda point1+OFFSET_STRUCT_POINT_Y
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sta SCREEN+1
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// getPoint(4, 5)
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lda #5
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ldx #4
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jsr getPoint
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// getPoint(4, 5)
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// point2 = getPoint(4, 5)
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stx.z point2
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sta point2+OFFSET_STRUCT_POINT_Y
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// SCREEN[2] = point2.x
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txa
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sta SCREEN+2
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// SCREEN[3] = point2.y
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lda point2+OFFSET_STRUCT_POINT_Y
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sta SCREEN+3
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// }
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rts
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}
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getPoint: {
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rts
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}
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