Cray CRAY-1 - 014 Ijkm Branch to Ijkm if (So)

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014ijkm

Branch

to

i j

km

if

(So) =

0

015

i j

krl

Branch

to

ijkrr

if

(So)

~

0

016ijvm

8ranch to

i j

krr

if

(s

0)

positive

017

i j

km

Branch

to

i

j

krr:

if

(S

0)

negntive

~-----------------------------------------------------

------------------

These t\tlO-parcel

in~tructions

test

the contents

of

So

for

the

cordition

specified

~y

the h

field.

If

the conrlition

is

satisfied,

the P

reqister

is

set

to the parcel address

specified

by

the

low

orrler

22

bits

of the

ijkm

field

and

execution continues

at

that

address.

The

high order

bit

of the ijkm

field

is

ignored.

If

the condition

is

not

satisfied,

execution continues with the

instruction

following the branch

instructior.

r10ld

issue

conditions

034

-

037

in process

Exchange in process

So

busy

in

last

2

CPs

Execution time

Instruction

issue:

Both

parcels

of

branch in the

same

buffer

and

branch address

in a

buffer

5

CPs

Both

parcels

of

branch in the

same

buffer

and

branch address

not in a

buffer

14

CPs

Both

parcels

of

branch in

different

buffers

and

branch

address in a

buffer

7

CPs

Both

parcels

of

branch in

different

buffers

and

branch

address not in a

buffer

16

CPs

Second

parcel

of

branch not in a

buffer

and

branch address

in a

buffer

16

CPs

Second

parcel

of

branch not in a

buffer

and

branch address

not in a

buffer

25

CPs

Both

parcels

of

branch in the

same

buffer

and

branch not taken 2

CPs

Both

parcels

of

branch in

different

buffers

and

branch not taken 4

CPs

Second

parcel

of

branch not in a

buffer

and

branch not taken

13

CPs

Special cases

(So)

= 0

is

considered a

positive

condition

2240004

4-20

E

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