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Research PDP7 development
[unix-history]
/
dsksav.s
diff --git a/dsksav.s
b/dsksav.s
new file mode 100644
(file)
index 0000000..
2e79929
--- /dev/null
+++ b/
dsksav.s
@@ -0,0
+1,26
@@
+" dsksav
+
+ iof
+ hlt
+ dzm track
+ -640
+ dac c1
+1:
+ lac track
+ jms dskrd1
+
+ lac track
+ jms dskwr0
+
+ lac track
+ tad d10
+ dac track
+ isz c1
+ jmp 1b
+
+ hlt
+ sys exit
+
+track: 0
+c1: 0
+d10: 10