diff --git a/ioscript/ioscript b/ioscript/ioscript
new file mode 100755
index 0000000..6062cc7
--- /dev/null
+++ b/ioscript/ioscript
@@ -0,0 +1,124 @@
+#!/usr/bin/perl
+
+$PDDAT = 0x10010310;
+$PDDATS = 0x10010314;
+$PDDATC = 0x10010318;
+$PDFUNC = 0x10010348;
+$PDDIR = 0x10010360;
+$PDDIRS = 0x10010364;
+$PDDIRC = 0x10010368;
+
+$bit{"DAT2"} = 12;
+$bit{"DAT3"} = 13;
+$bit{"CMD"} = 8;
+$bit{"VDD"} = 2;
+$bit{"CLK"} = 9;
+$bit{"DAT0"} = 10;
+$bit{"DAT1"} = 11;
+
+
+sub poke
+{
+	local ($a, $v) = @_;
+
+	return unless $v;
+	$c = sprintf("ssh jlime poke 0x%0x 0x%0x", $a, $v & $mask);
+#print STDERR "$c\n";
+	system($c);
+}
+
+
+sub peek
+{
+	local ($a) = @_;
+
+	$c = sprintf("ssh jlime poke 0x%x", $a);
+#print STDERR "$c\n";
+	return hex(`$c`);
+}
+
+
+$mask = 0;
+for (values %bit) {
+	$mask |= 1 << $_;
+}
+&poke($PDFUNC, $mask);
+
+$dat = 1 << $bit{"VDD"};
+$dir = $dat;
+&poke($PDDATS, $dat);
+&poke($PDDATC, $mask ^ $dat);
+&poke($PDDIRS, $dir);
+&poke($PDDIRC, $mask ^ $dir);
+
+while (<>) {
+	print STDERR;
+	chop;
+	s/#.*//;
+	next if /^\s*$/;
+	if (/^\S+,(\S+,)*\S+/) {
+		for (split /,/) {
+			die "unknown bit \"$_\"" unless defined $bit{$_};
+			push(@pos, $_);
+		}
+	} elsif (/^(\S+)=(\S+)\s*/) {
+		die "unknown bit \"$2\"" unless defined $bit{$2};
+		die "bit \"$1\" is already defined" if defined $bit{$1};
+		$bit{$1} = $bit{$2};
+	} elsif (/^echo\s+/) {
+		print "$'\n";
+	} elsif (/^show\s*$/) {
+		$tdir = &peek($PDDIR);
+		$tdat = &peek($PDDAT);
+		for (@pos) {
+			$v = 1 << $bit{$_};
+			print "$_($bit{$_})=",
+			    $tdir & $v ? $tdat & $v ? "1" : "0" : "Z", " ";
+		}
+		print "\n";
+	} elsif (/^wait\s+([01-]+)\s*$/) {
+		$m = 0;
+		$c = 0;
+		@p = @pos;
+		$s = $1;
+		while (length $s) {
+			die "out of bits" unless @p;
+			$v = 1 << $bit[shift @p];
+			if ($s =~ /^0/) {
+				$m |= $v;
+			} elsif ($s =~ /^1/) {
+				$m |= $v;
+				$c |= $v;
+			}
+			$s = substr($s, 1);
+		}
+# @@@ to do
+	} elsif (/^sleep\s+(\d+|\d*\.\d*)\s*$/) {
+		select(undef, undef, undef, $1);
+	} elsif (/^([-01zZ]+)\s*$/) {
+		@p = @pos;
+		($tdir, $tdat) = ($dir, $dat);
+		$s = $1;
+		while (length $s) {
+			die "out of bits" unless @p;
+			$v = 1 << $bit{shift @p};
+			if ($s =~ /^0/) {
+				$tdir |= $v;
+				$tdat &= ~$v;
+			} elsif ($s =~ /^1/) {
+				$tdir |= $v;
+				$tdat |= $v;
+			} elsif ($s =~ /^[zZ]/) {
+				$tdir &= ~$v;
+			}
+			$s = substr($s, 1);
+		}
+		&poke($PDDATS, $tdat & ~$dat);
+		&poke($PDDATC, ~$tdat & $dat);
+		&poke($PDDIRS, $tdir & ~$dir);
+		&poke($PDDIRC, ~$tdir & $dir);
+		($dir, $dat) = ($tdir, $tdat);
+	} else {
+		die "unrecognized command \"$_\"";
+	}
+}
diff --git a/ioscript/try b/ioscript/try
new file mode 100644
index 0000000..194596c
--- /dev/null
+++ b/ioscript/try
@@ -0,0 +1,27 @@
+# test script for antorcha/whip/led/
+
+#DAT2,DAT3,CMD,VDD,CLK,DAT0,DAT1
+
+SCLK=DAT1
+LCLK=DAT0
+DS=CLK
+
+VDD,DS,SCLK,LCLK
+show
+1111		# power off, drive all data lines to 1
+sleep 0.1	# let caps trickle-charge
+0000		# power on
+-1--		# send "1"
+--1-
+--0-
+--1-		# send another "1"
+--0-
+---1		# latch
+---0
+sleep 1
+-0--		# send "0"
+--1-
+--0-
+---1		# latch
+---0
+sleep 1