/
spacewar.mac
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/
spacewar.mac
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macro fio-dec system@ june 1963
szm=sza sma-szf
spq=szm i
clc=cma+cla-opr
ioh=iot i
define senseswitch A
repeat 3, A=A+A
szs A
term
define initialize A,B
law B
dap A
term
define index A,B,C
idx A
sas B
jmp C
term
define listen
cla+cli+clf 1-opr-opr
szf i 1
jmp .-1
tyi
term
define swap
rcl 9s
rcl 9s
term
define load A,B
lio (B
dio A
term
define setup A,B
law i B
dac A
term
define count A,B
isp A
jmp B
term
define move A,B
lio A
dio B
term
define clear A,B
init .+2, A
dzm
index .-1, (dzm B+1, .-1
term
start
spacewar 3.1 24 sep 62 p1. 1
3/
jmp sbf / ignore seq. break
jmp a40
jmp a1 / use test word for control, note iot 11 00
/ interesting and often changed constants
/symb loc usual value (all instructions are executed,
/ and may be replaced by jda or jsp)
tno,6, law i 41 / number of torps + 1
tvl,7, sar 4s / torpedo velocity
rlt,10, law i 20 / torpedo reload time
tlf,11, law i 140 / torpedo life
foo,12, -20000 / fuel supply
maa,13, 10 / spaceship angular acceleration
sac,14, sar 4s / spaceship acceleration
str,15, 1 / star capture radius
me1,16, 6000 / collision "radius"
me2,17, 3000 / above/2
ddd,20, 777777 / 0 to save space for ddt
the,21, sar 9s / amount of torpedo space warpage
mhs,22, law i 10 / number of hyperspace shots
hd1,23, law i 40 / time in hyperspace before breakout
hd2,24, law i 100 / time in hyperspace breakout
hd3,25, law i 200 / time to recharge hyperfield generator
hr1,26, scl 9s / scale on hyperspatial displacement
hr2,27, scl 4s / scale on hyperspatially induced velocity
hur,30, 40000 / hyperspatial uncertancy
ran,31, 0 / random number
/ place to build a private control word routine.
/ it should leave the control word in the io as follows.
/ high order 4 bits, rotate ccw, rotate cw, (both mean hyperspace)
/ fire rocket, and fire torpedo. low order 4 bits, same for
/ other ship. routine is entered by jsp cwg.
40/
cwr, jmp mg1 / normally iot 11 control
. 20/ / space
////
/ routine to flush sequence breaks, if they occur.
sbf, tyi
lio 2
lac 0
lsm
jmp i 1
define xincr X,Y,INS
lac Y
INS \ssn
dac Y
lac X
INS \scn
dac X
term
define yincr X,Y,INS
lac Y
INS \scn
dac Y
lac X
-INS+add+sub \ssn
dac X
term
////
// PLB: "aa" was "a"
define dispatch
add (aa+R
dap . 1
jmp .
aa,
term
define dispt A,Y,B
repeat 6, B=B+B
lio Y
dpy-A+B
term
define scale A,B,C
lac A
sar B
dac C
term
define diff V,S,QF
add i V
dac i V
xct QF
add i S
dac i S
term
define random
lac ran
rar 1s
xor (355760
add (355670
dac ran
term
define ranct S,X,C
random
S
X
sma
cma
dac C
term
////
/sine-cosine subroutine. adams associates
/calling sequence= number in ac, jda jda sin or jdacos.
/argument is between q+2 pi, with binary point to right of bit 3.
/anser has binary point to right of bit 0. time = 2.35 ms.
define mult Z
jda mpy
lac Z
term
cos, 0
dap csx
lac (62210
add cos
dac sin
jmp .+4
sin, 0
dap csx
lac sin
spa
si1, add (311040
sub (62210
sma
jmp si2
add (62210
si3, ral 2s
mult (242763
dac sin
mult sin
dac cos
mult (756103
add (121312
mult cos
add (532511
mult cos
add (144417
mult sin
scl 3s
dac cos
xor sin
sma
jmp csx-1
lac (377777
lio sin
spi
cma
jmp csx
lac cos
csx, jmp .
si2, cma
add (62210
sma
jmp si3
add (62210
spa
jmp .+3
sub (62210
jmp si3
sub (62210
jmp si1
////
/bbn multiply subroutine
/call.. lac one factor, jdy mpy or imp, lac other factor.
imp, 0 /returns low 17 bits and sign in ac
dap im1
im1, xct
jda mpy
lac imp
idx im1
rir 1s
rcr 9s
rcr 9s
jmp i im1
mp2, 0
mpy, 0 /return 34 bits and 2 signs
dap mp1
lac mpy
spa
cma
rcr 9s
rcr 9s
mp1, xct
spa
cma
dac mp2
cla
repeat 21, mus mp2
dac mp2
xct mp1
xor mpy
sma
jmp mp3
lac mp2
cma
rcr 9s
rcr 9s
cma
rcr 9s
rcr 9s
dac mp2
mp3, idx mp1
lac mp2
jmp i mp1
////
/integer square root
/input in ac, binary point to right of bit 17, jda sqt
/answer in ac with binary point between 8 and 9
/largest input number = 177777
sqt, 0
dap sqx
law i 23
dac sq1
dzm sq2
lio sqt
dzm sqt
sq3, isp sq1
jmp .+3
lac sq2
sqx, jmp .
lac sq2
sal 1s
dac sq2
lac sqt
rcl 2s
sza i
jmp sq3
dac sqt
lac sq2
sal 1s
add (1
sub sqt
sma+sza-skip
jmp sq3
spa
cma
dac sqt
idx sq2
jmp sq3
sq1, 0
sq2, 0
////
/bbn divide subroutine
/calling sequence.. lac hi-dividend, lio lo-dividend, jda dvd, lac divisor.
/returns quot in ac, rem in io.
idv, 0 /integer divide, dividend in ac.
dap dv1
lac idv
scr 9s
scr 8s
dac dvd
jmp dv1
dvd, 0
dap dv1
dv1, xct
spa
cma
dac idv
lac dvd
sma
jmp dv2
cma
rcr 9s
rcr 9s
cma
rcr 9s
rcr 9s
dv2, sub idv
sma
jmp dve
repeat 22, dis idv
add idv
dio idv
cli
rcr 1s
lio dvd
spi
cma
dac dvd
xct dv1
xor dvd
rcr 9s
rcr 9s
idx dv1
dve, idx dv1
lac idv
spi
cma
lio dvd
jmp i dv1
////
/outline compiler
/ac=where to compile to, call oc
/ot=address of outline table
define plinst A
lac A
dac i oc
idx oc
terminate
define comtab A, B
plinst A
jsp ocs
lac B
jmp oce
terminate
ocs, dap ocz /puts in swap
dio i oc
idx oc
dio i oc
idx oc
ocz, jmp .
oc, 0
dap ocx
lac i ocx
dap ocg
plinst (stf 5
dap ocm
idx ocx
ock, plinst (lac \sx1
plinst (lio \sy1
clf 6
ocj, setup \occ,6
ocg, lio .
och, cla
rcl 3s
dio \oci
lio (rcl 9s
dispatch
opr
jmp oc1
oco, jmp oc2
ocq, jmp oc3
ocp, jmp oc4
ocr, jmp oc5
jmp oc6
////
plinst (szf 5 //code
add (4
dap ocn
plinst ocn
plinst (dac \sx1
plinst (dio \sy1
plinst (jmp sq6
plinst (clf 5
plinst (lac \scm
plinst (cma
plinst (dac \scm
plinst (lac \ssm
plinst (cma
plinst (dac \ssm
plinst (lac \csm
plinst (lio \ssd
plinst (dac \ssd
plinst (dio \csm
plinst (lac \ssc
plinst (lio \csn
plinst (dac \csn
plinst (dio \ssc
plinst ocm
ocx, jmp .
ocm, jmp .
ocn, jmp .
oc1, plinst (add \ssn
jsp ocs
lac (sub \scn
oce, dac i oc
idx oc
jsp ocs
plinst (ioh
lac (dpy-4000
ocd, dac i oc
idx oc
lio \oci
count \occ, och
idx ocg
jmp ocj
oc2, comtab (add \scm, (add \ssm
oc3, comtab (add \ssc, (sub \csm
oc4, comtab (sub \scm, (sub \ssm
oc5, comtab (add \csn, (sub \ssd
oc6, szf 6
jmp oc9
stf 6
plinst (dac \ssa
lac (dio \ssi
jmp ocd
oc9, clf 6
plinst (lac \ssa
lac (lio \ssi
jmp ocd
////
/ display a star
define starp
add \bx
swap
add \by
swap
ioh
dpy-4000
terminate
/star
blp, dap blx
szs 60
jmp blx
random
rar 9s
and (add 340
spa
xor (377777
dac \bx
lac ran
ral 4s
and (add 340
spa
xor (377777
dac \by
jsp bpt
ioh
blx, jmp .
bpt, dap bpx
random
sar 9s
sar 5s
spa
cma
sal 3s
add (bds
dap bjm
cla cli clf 6-opr-opr
dpy-4000
bjm, jmp .
bds, repeat 20, starp
szf 6
bpx, jmp .
stf 6
cma
swap
cma
swap
jmp bjm
////
/background display . 3/13/62, prs.
define dislis J, Q, B
repeat 6, B=B+B
clf 5
lac flo+R
dap fpo+R
fs, dap fin+R
dap fyn+R
idx fyn+R
fin, lac /lac x
sub fpr /right margin
sma
jmp fgr+R
add (2000
frr, spq
fou, jmp fuu+R
fie, sub (1000
sal 8s
fyn, lio /lio y
dpy-i+B
stf 5
fid, idx fyn+R
sad (lio Q+2
jmp flp+R
sad fpo+R
jmp fx+R
dap fin+R
idx fyn+R
jmp fin+R
fgr, add (2000 -20000
jmp frr+R
fuu, szf 5
fx, jmp flo+R+1 /return
idx flo+R
idx flo+R
sas (Q+2
jmp fid+R
law J
dac flo+R
jmp fid+R
flp, lac (lio J
sad fpo+R
jmp fx+R
dap fin+R
law J+1
dap fyn+R
jmp fin+R
fpo, lio
flo, J
terminate
////
define background
jsp bck
termin
bck, dap bcx
szs 40
jmp bcx
isp bcc
bcx, jmp .
law i 2
dac bcc
dislis 1j,1q,3
dislis 2j,2q,2
dislis 3j,3q,1
dislis 4j,4q,0
isp bkc
jmp bcx
law i 20
dac bkc
law i 1
add fpr
spa
add (20000
dac fpr
jmp bcx
bcc, 0
bkc, 0
fpr, 10000
////
/spacewar 3.1 24 sep 62 pt. 2
/main control for spaceships
nob=30 /total number of colliding objects
ml0, load \mtc, -4000 /delay for loop
init ml1, mtb /loc of calc routines
add (nob
dap mx1 /x
nx1=mtb nob
add (nob
dap my1 /y
ny1=nx1 nob
add (nob
dap ma1 / count for length of explosion or torp
na1=ny1 nob
add (nob
dap mb1 / count of instructions taken by calc routine
nb1=na1 nob
add (nob
dac \mdx / dx
ndx=nb1 nob
add (nob
dac \mdy / dy
ndy=ndx nob
add (nob
dap mom /angular velocity
nom=ndy nob
add (2
dap mth / angle
nth=nom 2
add (2
dac \mfu /fuel
nfu=nth 2
add (2
dac \mtr / no torps remaining
ntr=nfu 2
add (2
dap mot / outline of spaceship
not=ntr 2
add (2
dap mco / old control word
nco=not 2
add (2
dac \mh1
nh1=nco 2
add (2
dac \mh2
nh2=nh1 2
add (2
dac \mh3
nh3=nh2 2
add (2
dac \mh4
nh4=nh3 2
nnn=nh4 2
////
law ss1
xor mtb
sza
jmp mdn
law ss2
xor mtb 1
sza
jmp mdn
law 1 / test if both ships out of torps
add ntr
spa
jmp md1
law 1
add ntr 1
spa i
jmp mdn
md1, xct tlf / restart delay is 2x torpedo life
sal 1s
dac \ntd
jmp ml1
mdn, count \ntd,ml1
stf 1
stf 2
law ss1
xor mtb
sza
clf 1
sza i
idx \1sc
law ss2
xor mtb 1
sza
clf 2
sza i
idx \2sc
clf 2
jmp a
////
a1, law mg2 / test word control
dac \cwg
jmp a
a40, law cwr / here from start at 4
dac \cwg
jmp a6
a, lac \gct
sma
jmp a5
count \gct, a5
lac \1sc
sas \2sc
jmp a4
law i 1
dac \gct
a5, lat
and (40
sza i
jmp a2
a4, lac \1sc
lio \2sc
hlt
lat
and (40
sza
jmp a2
dzm \1sc
dzm \2sc
a6, lat
rar 6s
and (37
sza
cma
dac \gct
a2, clear mtb, nnn-1 / clear out all tables
law ss1
dac mtb
law ss2
dac mtb 1
lac (200000
dac nx1
dac ny1
cma
dac nx1 1
dac ny1 1
lac (144420
dac nth
////
law nnn / start of outline problem
dac not
lio ddd
spi i
jmp a3
jda oc
ot1
a3, dac not 1
jda oc
ot2
xct tno
dac ntr
dac ntr 1
lac foo
dac nfu
dac nfu 1
law 2000
dac nb1
dac nb1 1
xct mhs
dac nh2
dac nh2 1
jmp ml0
/ control word get routines
mg1, dap mg3
cli
iot 11
mg3, jmp .
mg2, dap mg4
lat
swap
mg4, jmp .
////
ml1, lac . / 1st control word
sza i / zero if not active
jmp mq1 / not active
swap
idx \moc
spi
jmp mq4
law 1
add ml1
dap ml2
law 1
add mx1
dap mx2
law 1
add my1
dap my2
law 1
add ma1
dap ma2
law 1
add mb1
dap mb2
mot, lac .
dap sp5
ml2, lac . / 2nd control word
spq / can it collide?
jmp mq2 / no
mx1, lac . / calc if collision
mx2, sub . / delta x
spa / take abs value
cma
dac \mt1
sub me1 / < epsilon ?
sma
jmp mq2 / no
my1, lac .
my2, sub .
spa
cma
sub me1 / < epsilon ?
sma
jmp mq2 / no
add \mt1
sub me2
sma
jmp mq2
lac (mex 400000 / yes, explode
dac i ml1 / replace calc routine with explosion
dac i ml2
lac i mb1 / duration of explosion
mb2, add .
cma
sar 8s
add (1
ma1, dac .
ma2, dac .
mq2, idx mx2 / end of comparion loop
idx my2
idx ma2
idx mb2
index ml2, (lac mtb nob, ml2
////
mq4, lac i ml1 / routine for calculating spaceship
dap . 1 / or other object and displaying it
jsp .
mb1, lac . / alter count of number of instructions
add \mtc
dac \mtc
mq1, idx mx1 / end of comparison and display loop
idx my1
idx ma1
idx mb1
idx \mdx
idx \mdy
idx mom
idx mth
idx \mas
idx \mfu
idx \mtr
idx mot
idx mco
idx \mh1
idx \mh2
idx \mh3
idx \mh4
index ml1, (lac mtb nob-1, ml1
lac i ml1 / display and compute last point
sza i / if active
jmp mq3
dap . 1
jsp .
lac i mb1
add \mtc
dac \mtc
mq3, background / display stars of the heavens
jsp blp / display massive star
count \mtc, . / use the rest of time of main loop
jmp ml0 / repeat whole works
////
/ misc calculation routines
/ explosion
mex, dap mxr
cla
diff \mdx, mx1, (sar 3s
cla
diff \mdy, my1, (sar 3s
law ms2
dap msh
lac i mb1 / time involved
cma cli-opr
sar 3s
dac \mxc
ms1, sub (140
sma
idx msh
mz1, random
and (777
ior (scl
dac mi1
random
scr 9s
sir 9s
msh, xct .
mi1, hlt
add i my1
swap
add i mx1
dpy-i 300
count \mxc, mz1
count i ma1, mxr
dzm i ml1
mxr, jmp .
ms2, scr 1s
scr 3s
/ torpedo calc routine
tcr, dap trc
count i ma1, tc1
lac (mex 400000
dac i ml1
law i 2
dac i ma1
jmp trc
tc1, lac i mx1
sar 9s
xct the
diff \mdy, my1, (sar 3s
sar 9s
xct the