From b3259cc9d19cec735753226e199da90424671fe7 Mon Sep 17 00:00:00 2001
From: Phil Budne <phil@ultimate.com>
Date: Mon, 29 Feb 2016 13:40:20 -0500
Subject: [PATCH] add (tab separated) comments

---
 src/sys/sop.s | 180 +++++++++++++++++++++++++-------------------------
 1 file changed, 89 insertions(+), 91 deletions(-)

diff --git a/src/sys/sop.s b/src/sys/sop.s
index 22ca2a4..124ee9d 100644
--- a/src/sys/sop.s
+++ b/src/sys/sop.s
@@ -1,97 +1,95 @@
 "** 01-s1.pdf page 62
 " sop
 
-dac = 0040000
-jms = 0100000
-dzm = 0140000
-lac = 0200000
-xor = 0240000
-add = 0300000
-tad = 0340000
-xct = 0400000
-isz = 0440000
-and = 0500000
-sad = 0540000
-jmp = 0600000
-nop = 0740000
-i = 020000
-law = 0760000
-cma = 0740001
-las = 0750004
-ral = 0740010
-rar = 0740020
-hlt = 0740040
-sma = 0740100
-sza = 0740200
-snl = 0740400
-skp = 0741000
-sna = 0741200
-szl = 0741400
-rtl = 0742010
-rtr = 0742020
-cil = 0744000
-rcl = 0744010
-rcr = 0744020
-cia = 0750000
-lrs = 0640500
-lrss = 0660500
-lls = 0640600
-llss = 0660600
-als = 0640700
-alss = 0660700
-mul = 0653323
-idiv = 0653323
-lacq = 0641002
-clq = 0650000
-omq = 0650002
-cmq = 0650004
-lmq = 0652000
+dac = 0040000			" MEM: deposit AC
+jms = 0100000			" MEM: jump to subroutine
+dzm = 0140000			" MEM: deposit zero to memory
+lac = 0200000			" MEM: load AC
+xor = 0240000			" MEM: XOR with AC
+add = 0300000			" MEM: one's complement add
+tad = 0340000			" MEM: two's complement add
+xct = 0400000			" MEM: execute
+isz = 0440000			" MEM: increment and skip if zero
+and = 0500000			" MEM: AND
+sad = 0540000			" MEM: skip if AC different
+jmp = 0600000			" MEM: jump
+nop = 0740000			" OPR: no-op
+i = 020000			" indirect
+law = 0760000			" OPR: load accumulator with (instr)
+cma = 0740001			" OPR: complement AC
+las = 0750004			" OPR: load AC from switches
+ral = 0740010			" OPR: rotate AC left
+rar = 0740020			" OPR: rotate AC right
+hlt = 0740040			" OPR: halt
+sma = 0740100			" OPR: skip on minus AC
+sza = 0740200			" OPR: skip on zero AC
+snl = 0740400			" OPR: skip on non-zero link
+skp = 0741000			" OPR: skip unconditionally
+sna = 0741200			" OPR: skip on negative AC
+szl = 0741400			" OPR: skip on zero link
+rtl = 0742010			" OPR: rotate two left
+rtr = 0742020			" OPR: rotate two right
+cll = 0744000			" OPR: clear link
+rcl = 0744010			" OPR: clear link, rotate left
+rcr = 0744020			" OPR: clear link, rotate right
+cla = 0750000			" OPR: clear AC
+lrs = 0640500			" EAE: long right shift
+lrss = 0660500			" EAE: long right shift, signed
+lls = 0640600			" EAE: long left shift
+llss = 0660600			" EAE: long left shift, signed
+als = 0640700			" EAE: AC left shift
+alss = 0660700			" EAE: AC left shift, signed
+mul = 0653323			" EAE: multiply
+idiv = 0653323			" EAE: integer divide
+lacq = 0641002			" EAE: load AC with MQ
+clq = 0650000			" EAE: clear MQ
+omq = 0650002			" EAE: OR MQ into AC
+cmq = 0650004			" EAE: complement MQ
+lmq = 0652000			" EAE: load MQ from AC
 
-dscs = 0707141
-dslw = 0707124
-dslm = 0707142
-dsld = 0707104
-dsls = 0707144
-dssf = 0707121
-dsrs = 0707132
-
-iof = 0700002
-ion = 0700042
-caf = 0703302
-clon = 0700044
-clsf = 0700001
+dscs = 0707141			" DSK: clear status register
+dslw = 0707124			" DSK: clear and load WC from AC
+dslm = 0707142			" DSK: clear and load MAC from AC
+dsld = 0707104			" DSK: clear and load TA and SA from AC
+dsls = 0707144			" DSK: load status
+dssf = 0707121			" DSK: skip on flags
+dsrs = 0707132			" DSK: read status register
 
+iof = 0700002			" PIC: interrupts off
+ion = 0700042			" PIC: interrupts on
+caf = 0703302			" CPU: clear all flags
+clon = 0700044			" CLK: clear flag, enable
+clsf = 0700001			" CLK: skip if overflow
 "** 01-s1.pdf page 63
-clof = 0700004
-ksf = 0700301
-krb = 0700312
-tsf = 0700401
-tcf = 0700402
-tls = 0700406
-sck = 0704301
-cck = 0704304
-lck = 0704312
-rsf = 0700101
-rsa = 0700104
-rrb = 0700112
-psf = 0700201
-pcf = 0700202
-psa = 0700204
-cdf = 0700501
-lds = 0701052
-lda = 0701012
-wcga = 0704206
-raef = 0700742
-rlpd = 0700723
-beg = 0700547
-spb = 0704401
-cpb = 0704404
-lpb = 0704412
-wbl = 0704424
-dprs = 0704752
-dpsf = 0704741
-dpcf = 0704761
-dprc = 0704712
-crsf = 0706701
-crrb = 0706712
-
+clof = 0700004			" CLK: clear flag, disable
+ksf = 0700301			" KBD: skip if flag set
+krb = 0700312			" KBD: read buffer
+tsf = 0700401			" TTY: skip if flag set
+tcf = 0700402			" TTY: clear flag
+tls = 0700406			" TTY: load buffer, select
+sck = 0704301			" S-2: skip on console keyboard
+cck = 0704304			" S-2: clear console keyboard
+lck = 0704312			" S-2: load console keyboard
+rsf = 0700101			" PTR: skip if flag set
+rsa = 0700104			" PTR: select alphanumeric mode
+rrb = 0700112			" PTR: clear flag, or read buffer
+psf = 0700201			" PTP: skip if flag set
+pcf = 0700202			" PTP: clear flag
+psa = 0700204			" PTP: alphanumeric mode
+cdf = 0700501			" ???
+lds = 0701052			" S-2: load display status
+lda = 0701012			" S-2: load display address
+wcga = 0704206			" S-2: ???
+raef = 0700742			" S-2: resume after edges flag
+rlpd = 0700723			" S-2: resume after light pen stop, disabled
+beg = 0700547			" S-2: begin
+spb = 0704401			" S-2: skip on push button flag
+cpb = 0704404			" S-2: clear push button flag
+lpb = 0704412			" S-2: load push buttons
+wbl = 0704424			" S-2: write button lights
+dprs = 0704752			" dataphone: read status
+dpsf = 0704741			" dataphone: skip on flag
+dpcf = 0704761			" dataphone: clear flag
+dprc = 0704712			" dataphone: read character
+crsf = 0706701			" CDR: skip if ready
+crrb = 0706712			" CDR: read buffer