Checkout/Quick reference

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Command	Arguments	Description
Level 1
nop/1	-	Waits for a small but positive time.
discard/1	a b	Discards b words, starting at a.
mov/1	a b	Takes a and stores it in memory location b.
mov/1	a b c	Takes a and stores it in memory location c.
cnvi/1	a b	Converts the float a to an int and stores it in b.
cnvi/1	a b c	Converts the float a to an int and stores it in c.
cnvf/1	a b	Converts the int a to a float and stores it in b.
cnvf/1	a b c	Converts the int a to a float and stores it in c.
iszi/1	a b	If a is the int 0, store 1 in b, 0 otherwise.
iszi/1	a b c	If a is the int 0, store 1 in c, 0 otherwise.
isni/1	a b	If a is a negative int, store 1 in b, 0 otherwise.
isni/1	a b c	If a is a negative int, store 1 in c, 0 otherwise.
addi/1	a b	Stores a+b in b as ints.
addi/1	a b c	Stores a+b in c as ints.
subi/1	a b	Stores a-b in b as ints.
subi/1	a b c	Stores a-b in c as ints.
muli/1	a b	Stores a*b in b as ints.
muli/1	a b c	Stores a*b in c as ints.
divi/1	a b	Stores a/b in b as ints, rounding towards 0.
divi/1	a b c	Stores a/b in c as ints, rounding towards 0.
modi/1	a b	Stores a%b in b as ints.
modi/1	a b c	Stores a%b in c as ints.
andi/1	a b	Stores a bitwise-and b in b as ints.
andi/1	a b c	Stores a bitwise-and b in c as ints.
iori/1	a b	Stores a bitwise-or b in b as ints.
iori/1	a b c	Stores a bitwise-or b in c as ints.
xori/1	a b	Stores a bitwise-xor b in b as ints.
xori/1	a b c	Stores a bitwise-xor b in c as ints.
lshi/1	a b	Stores a left-shifted by b in b as ints.
lshi/1	a b c	Stores a left-shifted by b in c as ints.
rshi/1	a b	Stores a right-shifted by b in b as ints.
rshi/1	a b c	Stores a right-shifted by b in c as ints.
addf/1	a b	Stores a+b in b as floats.
addf/1	a b c	Stores a+b in c as floats.
subf/1	a b	Stores a-b in b as floats.
subf/1	a b c	Stores a-b in c as floats.
mulf/1	a b	Stores a*b in b as floats.
mulf/1	a b c	Stores a*b in c as floats.
divf/1	a b	Stores a/b in b as floats.
divf/1	a b c	Stores a/b in c as floats.
id/1	a	Writes an int to a that contains the current subunit number in level 1.
idtwo/1	a	Writes an int to a that contains the current subunit number in level 2.
idthree/1	a	Writes an int to a that contains the current subunit number in level 3.
abstain/1	a b	If the memory in a is nonzero, execute b. This is slower than if.
abstain/1	a b c	If the memory in a is nonzero, execute b, else execute c. This is slower than if.
Level 2
nop/2	-	Waits for all the level 1 subunits to synchronise.
move/2	a b c	Moves some amount of memory regulated by c from a to b. a and b have to be in level 1 and 3, or level 3 and 5, or level 1 and 5.
copy/2	a b c	Copies some amount of memory regulated by c from a to b. a and b have to be in level 1 and 3, or level 3 and 5, or level 1 and 5.
rocopy/2	a b c	RO-copies some amount of memory regulated by c from a to b. a and b have to be in level 1 and 3, or level 3 and 5, or level 1 and 5.
discard/2	a b	Discards b words of memory at location a in level 3.
id/2	a	Writes an int to a that contains the current subunit number in level 2.
if/2	a b	If a is not 0, execute b.
if/2	a b c	If a is not 0, execute b, else execute c.
while/2	a b	While a is not 0, execute b.
Level 3
nop/3	-	Waits for all level 2 subunits to synchronise.
id/3	a	Writes an int to a that contains the current subunit number in level 3.
Level 4
nop/4	-	Waits for all level 3 subunits to synchronise. This command is profile- dependent.
parloop/4	a b c	Creates a level 3 subunits, each with b level 2 subunits, and executes c on the level 3 subunits.
Level 5
move/5	a b c	Moves c words from a to b. a and b must be of level 5 or 6.
copy/5	a b c	Copies c words from a to b. a and b must be of level 5 or 6.
rocopy/5	a b c	RO-copies c words from a to b. a and b must be of level 5 or 6.
discard/5	a b	Discards b words at a.
id/5	a	Writes an int to a that contains the current subunit number in level 5.
interleave/5	a1 a2 a3 ... an	For each argument, creates a level 4 subunit and executes the code on the said subunit.
malloc/5	a b	Allocates b words, and stores the pointer at a. This command is profile- dependent.
free/5	a	Frees the memory created by malloc/5, referenced at a. This command is profile-dependent.
in/5	a	Takes a word of input and stores it at a. This command is profile- dependent.
out/5	a	Takes a word at a and outputs it. This command is profile-dependent.
Level 6
nop/6	-	Waits for all level 5 subunits to synchronise.
discard/6	a b	Discards b words at a.
if/6	a b	If a is not 0, execute b.
if/6	a b c	If a is not 0, execute b, else execute c.
while/6	a b	While a is not 0, execute b.
interleave/6	(system-dependent)	For each argument, create a new level 5 subunit, and execute the given code. How this command works is system-dependent.
malloc/6	a b	Allocates b words, and stores the pointer at a.
free/6	a	Frees the memory created by malloc/5, referenced at a.