1 files changed, 4 insertions, 4 deletions

diff --git a/tool/download.tcl b/tool/download.tcl
index 96fc03b..596e527 100755
--- a/tool/download.tcl
+++ b/tool/download.tcl
@@ -26,10 +26,10 @@ while {[gets stdin line] >= 0} {
 # It's likely we ended with a very large zero-memory operation. We want to see
 # two command bytes echoed back to us in order to guarantee that the zero
 # operation has completely flushed to memory.
-send "?"
-expect -ex "?"
-send "?"
-expect -ex "?"
+# Note that this forces the last line of memory to be zero.
+set atline "@[format %x [expr ($core * 32768 + 32767) / $wordsperline]]"
+send "$atline =0 $atline ?"
+expect -ex "$atline =0 $atline ?0000\r\n"
 
 send "\n~."
 wait