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60 lines
1.6 KiB
60 lines
1.6 KiB
// integer semantics version of abstract firewire protocol
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// gxn 23/05/2001
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nondeterministic
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// largest constant the clock of the system is compared to
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const int kx = 167;
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module abstract_firewire
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// clock of the system
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x : [0..168];
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// local state
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s : [0..9];
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// 0 - start_start
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// 1 - fast_start
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// 2 - start_fast
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// 3 - start_slow
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// 4 - slow_start
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// 5 - fast_fast
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// 6 - fast_slow
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// 7 - slow_fast
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// 8 - slow_slow
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// 9 - done
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// initial state
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[] (s=0) & (x<36) -> (x'=min(x+1,kx+1));
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[] (s=0) -> 0.5 : (s'=1) + 0.5 : (s'=4);
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[] (s=0) -> 0.5 : (s'=2) + 0.5 : (s'=3);
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// fast_start
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[] (s=1) & (x<36) -> (x'=min(x+1,kx+1));
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[] (s=1) -> 0.5 : (s'=5) & (x'=0) + 0.5 : (s'=6) & (x'=0);
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// start_fast
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[] (s=2) & (x<36) -> (x'=min(x+1,kx+1));
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[] (s=2) -> 0.5 : (s'=5) & (x'=0) + 0.5 : (s'=7) & (x'=0);
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// start_slow
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[] (s=3) & (x<36) -> (x'=min(x+1,kx+1));
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[] (s=3) -> 0.5 : (s'=6) & (x'=0) + 0.5 : (s'=8) & (x'=0);
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// slow_start
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[] (s=4) & (x<36) -> (x'=min(x+1,kx+1));
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[] (s=4) -> 0.5 : (s'=7) & (x'=0) + 0.5 : (s'=8) & (x'=0);
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// fast_fast
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[] (s=5) & (x<85) -> (x'=min(x+1,kx+1));
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[] (s=5) & (x>=76) -> (s'=0) & (x'=0);
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[] (s=5) & (x>=40) -> (s'=9) & (x'=0);
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// fast_slow
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[] (s=6) & (x<167) -> (x'=min(x+1,kx+1));
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[] (s=6) & (x>=123) -> (s'=9) & (x'=0);
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// slow_fast
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[] (s=7) & (x<167) -> (x'=min(x+1,kx+1));
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[] (s=7) & (x>=123) -> (s'=9) & (x'=0);
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// slow_slow
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[] (s=8) & (x<167) -> (x'=min(x+1,kx+1));
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[] (s=8) & (x>=159) -> (s'=0) & (x'=0);
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[] (s=8) & (x>=123) -> (s'=9) & (x'=0);
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// done
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[] (s=9) -> (s'=9);
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endmodule
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