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82 lines
1.8 KiB
Lua
82 lines
1.8 KiB
Lua
%import c64utils
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%zeropage basicsafe
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~ main {
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sub start() {
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ubyte aa = 100
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ubyte yy = 22
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uword uw = (aa as uword)*yy
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c64scr.print("stack (255?): ")
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c64scr.print_ub(X)
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c64.CHROUT('\n')
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aa=30
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yy=2
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c64scr.print_ub(aa+yy)
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c64scr.print("?: ")
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check(aa, yy)
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aa++
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c64scr.print_ub(aa+yy)
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c64scr.print("?: ")
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check(aa, yy)
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aa++
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c64scr.print_ub(aa+yy)
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c64scr.print("?: ")
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check(aa, yy)
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c64scr.print_uw(uw)
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c64scr.print("?: ")
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checkuw(uw)
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uw++
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c64scr.print_uw(uw)
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c64scr.print("?: ")
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checkuw(uw)
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uw++
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c64scr.print_uw(uw)
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c64scr.print("?: ")
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checkuw(uw)
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c64scr.print("stack (255?): ")
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c64scr.print_ub(X)
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}
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sub checkuw(uword uw) {
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when uw {
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12345 -> c64scr.print("12345")
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12346 -> c64scr.print("12346")
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2200 -> c64scr.print("2200")
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2202 -> c64scr.print("2202")
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12347 -> c64scr.print("12347")
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else -> c64scr.print("not in table")
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}
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c64.CHROUT('\n')
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}
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sub check(ubyte a, ubyte y) {
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when a+y {
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10 -> {
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c64scr.print("ten")
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}
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5 -> c64scr.print("five")
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30 -> c64scr.print("thirty")
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31 -> c64scr.print("thirty1")
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32 -> c64scr.print("thirty2")
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33 -> c64scr.print("thirty3")
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99 -> c64scr.print("nn")
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55 -> {
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; should be optimized away
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}
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56 -> {
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; should be optimized away
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}
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else -> {
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c64scr.print("not in table")
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}
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}
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c64.CHROUT('\n')
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}
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}
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