PDP-1
images
instruction set pdf
00
and 02 and
ior 04 inclusive or
xor 06 exlusive or
xct 10 execute
12
14
cal 16 call subroutine
jda 17 jump and deposit AC
lac 20 load AC
lio 22 load IO
dac 24 deposit AC
dap 26 deposit address part
dip 30 deposit instruction part
dio 32 deposit IO
dzm 34 deposit zero
36
add 40 add
sub 42 subtract
idx 44 index
isp 46 index and skip if positive
sad 50 skip if AC different
sas 52 skip if AC same
mus 54 multiply step
dis 56 divide step
jmp 60 jump
jsp 62 jump and save PC
skp 64
skp 010000 invert skip condition
spi 002000 skip on plus IO
szo 001000 skip on zero overflow
sma 000400 skip on minus AC
spa 000200 skip on plus AC
sza 000100 skip on zero AC
szs 0000X0 skip on zero switch
szf 00000X skip on zero flag
sft 66
RIGHT 010nnn ..l/..r rotate/shift right
SHIFT 004nnn r../s.. shift instead of rotate
IO 002nnn .../.i./.c. rotate/shift IO
AC 001nnn .../.a./.c. rotate/shift AC
law 70 load AC with address
iot 72 IO transfer
74
opr 76
cli 004000 clear IO
lat 002000 load AC with test word (OR switches)
cma 001000 complement AC
hlt 000400 halt
cla 000200 clear AC
lap 000100 load AC with PC
stf 00001X set flag
clf 00000X clear flag