--- /dev/null
+#include "contrib/demo.ships"
+
+//22: sendto debug.data
+//22: sendto debug.data
+//alu1.out: ack debug.data
+
+299: sendto alu2.a
+120: sendto alu2.b
+0: sendto alu2.op
+alu2.out: take, sendto debug.data
+
+
+//22: sendto alu3.b
+
+// route the "max" output to the demux, and that to either
+// the finished-value output (debug.data) or the subtractor
+//sort.max: [*] take, sendto demux1.in
+// demux1.false: [*] take, sendto debug.data
+// demux1.true: [*] take, sendto alu.a
+//
+//// route the "min" value to the demux selector to decide if we are
+//// done; also send copies to the ALU and the secondary sort input
+//sort.min: [*] take, sendto dup3.in
+// dup3.a: [*] take, sendto demux1.select
+// dup3.b: [*] take, sendto alu.b
+// dup3.c: [*] take, sendto sort.b
+//
+//// "plug up" the ALU opcode input with a "1" (subtraction)
+//1: sendto alu.op
+// alu.op: take [*] accept
+//
+//// route all data emerging from the ALU back to the primary sort input
+//alu.out: [*] take, sendto sort.a
+//
+//// all other inputs are in default mode
+//sort.a: [*] take, accept
+//sort.b: [*] take, accept
+//alu.a: [*] take, accept
+//alu.b: [*] take, accept
+//dup3.in: [*] take, accept
+//demux1.select: [*] take, accept
+//demux1.in: [*] take, accept
+//
+//// gcd(377,221)=13 (we hope!)
+////377: sendto sort.a
+////221: sendto sort.b
+//