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add some (tab separated) comments; fixed some typos

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Phil Budne
2016-02-29 14:22:27 -05:00
parent b3259cc9d1
commit 2def710c48
3 changed files with 67 additions and 64 deletions
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src/sys/s7.s
+9 -9
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@@ -1,7 +1,7 @@
"** 01-s1.pdf page 41
" s7
pibreak:
pibreak: " priority interrupt processing "chain"
dac .ac "** CROSSED OUT....
dpsf
@@ -25,15 +25,15 @@ pibreak:
dac dpwrite
jmp piret "** END OF CROSSOUT
1: clsf
jmp 1f
1: clsf " clock overflow (line frequency ticks)?
jmp 1f " no
lpb
dac pbsflgs
isz s.tim+1
skp
isz s.tim
isz uquant
lpb " load display push buttons
dac pbsflgs " save
isz s.tim+1 " increment low order tick count
skp " no overflow, skip second increment
isz s.tim " low order overflowed, increment high order count
isz uquant " increment user quantum counter
"** written: ttydelay -> ttyd1
"** written: ttyrestart -> ttyres1
cnop: