Programmable interface apparatus and method

44 Pages·2013·3.66 MB·English

4,006,466
United States Patent [19]
[ll]
Feb. 1, 1977
Patterson et al. [45]
plurality of active modules, a plurality of passive mod
[54] PROGRAMMABLE INTERFACE
APPARATUS AND METHOD ules and at least one memory module and a system
interface unit having a plurality of ports, each of which
[75] Inventors: Garvin Wesley Patterson, Glendale; connect to a di?'erent one of the modules. Each module
William A. Shelly, Phoenix; Jaime connects to one of the ports by a plurality of different
Calle, Glendale; Earnest M. interfaces. The active modules include an input/output
Monahan, Phoenix, all of Ariz. processing unit for processing interrupts and executing
[73] Assignee: Honeywell Information Systems, command sequences and a multiplexer unit for directly
controlling transfers between the memory module and
Inc., Waltham, Mass.
any one of the peripheral devices coupled to different
[22] Filed: Mar. 26, 1975 ones of a plurality of ports of the multiplexer unit.
Different ones of the modules of the system include the
[211 Appl. No.: 562,364
programmable interface used for transferring com
[52] US. Cl. .......................................... .. 340/1725 mand information to the multiplexer unit and to the
devices associated therewith for enabling a different
[51] Int. Cl.2 . . . . . . . . . . . . . . . . . . . . . . . . .. G06F 1/00
[58] Field of Search ............................... .. 340/1725 type of control to proceed in parallel with input/output
data transfer operations. Each multiplexer unit in
[56] References Cited
cludes a plurality of storage registers which are opera
UNITED STATES PATENTS tively coupled to the programmable interface asso
ciated therewith for receiving control information
3,386,083 5/1968 Geller ct al. .................. it 340N725
therefrom designating the priority to be given by the
3,399,384 8/1968 Crockett ct al. ............. H IMO/172.5
unit to the processing of different types of interrupt
3,905,025 9/1975 Davis ct all ......... t. 340/1725
signals received from devices associated therewith in
3,925,766 12/1975 Bardotti ct all .............. .. 340/1725
addition to information designating which one of a set
Primary Examiner—R. Stephen Dildine, Jr.
of processing routines to be used in servicing the inter
Attorney, Agent, or Firm-Faith F. Driscoll; Ronald T.
rupt.
Reiling
[57] ABSTRACT
24 Claims, 31 Drawing Figures
An input/output data processing system includes a
64K l 40
LOCAL MEMORY
‘ LOCAL MEMORY 1‘ 500
CONTROLLER
400
0A!
s03 60'
_A I ‘OP 1 PRINTER
H __L§tf>__n7 1 l L LOW SPEED l "A l
' ' J MULTIPLEXER H I
SYSTEM INTERFACE (MPXI 1 ; -
UNIT H 1 : PAPER
H H n- aG a , -1 MF .___ E v , A l‘ K 5021,I r @Rr 1 RETAADPEE R
1 l ( _____
602 ; e00 ‘ . . . 1 BM
1 ‘52%| . 600 602 60l 600
__u
— 1
l INPUT/OUTPUT , HOST HIGH SPEED MULTIPLEXER
PROCESSOR i EEOC‘ v (MPX) HSMX
| 1 CHAN 1 CHAN CHAN ‘ CHAN
\ y 1 PORT o ‘ PORT 1 PORT 2 1 P RT
200 :00 300 ‘ i o 3
5V4 E/v5‘— ~ E 'EV‘'G7 H \ l% :/'30“0I- 1
l l > 1
1 CONTROLLER lADAPTER ,‘ADAPTER ‘ADAPTER
of;
303,1‘ ADAPTER 1 1 C 2 3
\so /v
y an
312/
309

U.S. Patent Feb. 1, 1977 Sheet 6 of 16 4,006,466
LVL 501 INTERRUPT LEVEL NETWORK
CA1 LVL/TYPE
CAO'3 FAO-‘l
CA2 LVL ITYPE (PORT/CHAN)
301-36
cm cournuu INTERRUPT
01 cm sum.’
“1'34 PARITY cao-s PRIORIW'
301-21 EXCPT &
INTERRUPTS
IR IDA REG. IHIO
COMMON SECTION
PTX-INIO -OO‘~O5 __ ______.__1
|
PTX-IDAO0~11,P0,1 IF‘ig 4a (sheef 2 0f 2).
US. Patent Feb. 1, 1977 Sheet 7 of 16 4,006,466
FROM-507a
oTA(0o-35,P°'5)
swncu
g9; CAOSELEGT T0 0A2 acAa
302-20“
3022 '
DRIVE cms
____J
TO 5074 * GAO-DFA-OO-SS P0-5
Fm ! .- " bit-1222;: _ -' u ‘
W W A027 _ me I
INTER FACE 502-15
FROM CAI I CONTROL _ ’ FARM
moucao68 . - 00 _ 35 c HCKK/TGS E u
301-46 ‘
CHANNEL ADAPTER PORT
SECTION (0A0)
cAo-mA-oo-as, P0-5 CAO-DF--55, PM
L (40) (40) A
Fig. 4b.
US. Patent Feb. 1, 1977 Sheet 8 Of 16 4,006,466
LACTIVE OUTPUT PORT REQ. /\
DA A TO IU
SIU PORTS m S I! 1 ACTWE
A-H DATA To s1u _ MODULES
WENT I
ACTIVE RED ACCEPTED .
ACCEPT READ DATA I ‘lg-5Q
(OMITTED ON
PORTs 68H)
ACCEPT PI COMMAND
PI DATA FROM SIU
sxu PORTS -
A-F ‘ELLNIERFAEE: RE ADYW MODULES
& J'L READ DATA xFER REO RDTR , 5b
PI DATA TO SIU PDTSMO) 1:‘! . .
.' l l QT; 11;” '_—""__ - g
READ DATA ACCERTLD X RDAA
\ W“ 60|
PROGRAMMABLE INTERFACE
LINTERRUPT REO H m IR
SIU PORTS NTERRUPT DATA IDA (l4) MODULES
A-F, G_.H "'"s??‘s’ax’ <""w::::_;’, ””""" ""—'" "_ ~. rue-p555“
a J_|_ MULTIPORT IDENT I VIM) (OMITTED ON
PORTS OOH)
LEvEL ZERO PRESENT LzP F
HIGHER LEVEL INTERRUPT PRESENT HLIP lg- 5 C
INTERRUPT DATA REQUEST \ IDR (OMITTED 0N
RELEASE \ I RLS PORTS A-D aJ-L)
INTERRUPT LEvEL \ / AILB)
KINTERRDPT INTERFAE}E\GOZ
TO MEM
TO MEM
SIU TO MEM
LOCAL ACCEPT PI COMMAND LOCAL
MEM PORTs ACCEPT zAC COMMAND MEM
I INTERFACE READY
zAC INTERFACE READY .
EAD DATA XFER REO RDTR I—-I‘1g_ 5d,
MEM DFM(40)
INT FROM MEM 1 RlFMuo)
DOUBLE PRECISION FROM MEM\ DPFM QUAD
READ DATA ACCEPTED \ RDAA ‘435D
SYSTEM CLOCK \ SYS-CLK
A\ N603
LOCAL MEMORY INTERFACE
U.S. Patent Feb. 1, 1977 Sheet 9 Of 16 4,006,466
FORMAT OF RDEX BI WREX INSTRUCTIONS
O 9 I25 I4 1718 35
OP CODE (5R1 6R2 IMMEDIATE/DISPLACEMENT
I Lg
“*TTVTTTTT" ‘Tr-J \i" /
//_Fm<g¥IDCEAsNABCEONsTANT
INST OP CODE _ H
WREX OR RDEX SEEgIFIES ONE OF GEN.
MODIFIED
ANOPTIONALJ _ LWWITH AN INDEX TO
INDEX REGISTER DEFINE AN ADDRESSOFAREG
OUTSIDE PROC. 2OO
/ FORMAT OF PI COMMAND COMMAND
wORD
012345 89 l5|6 26272829 35/
R/ CHAN / / > C ADDREss/
PI w R PN # // CONTROL 0P A FUNCTION
WXW'w-J ¥—-Y\—J \———,-——~J-J~YA—-?r~—-J
P1“ \ OOxx=CA PORTO ADDREss OF REG TO
1=WREXL O1XX=CA PQRT1 BE READ/LOADED
O=RDEX 1OXX=CA PORT 2 WHERE 27=O.
PRIvILEOE, 11 xx =CA PORT 3 ADDRESS =0018 FOR
MODE=I (FROM PSR BITS é??cc?glfgs BE
Fig, 7Q< $28M =BOTt R '" II i EXECUTED IN CASE OF
' ' USED IN CONJUNCTION 1 LOAD CONTROL
WITH A LOAD CONTROL-- COMMAND (Le. 2701)
COMMAND (Fig 7b)
CAC=1=CA COMMAND
1,2T=OO=READ REG. 1,27=Ol=NOT USED .
1, 27=10= LOAD REG. 1,27=11= LOAD CONTROL CAC = O = HSMX COMMAND
2 I m 5,6 IIi2l4l5l7l8202l232426272930323335
/ ICBD LTO LTI LT2 LT3 LT4 LT5 LT6 LT? \DATA
\ \_____Y_____/ L v wORD
INT CONTROL LTO=LEvEL FOR INTERRuPT O
BLOCK DISPLACEMENT LTI =LEvEL FOR INTERRUPT 1
LT 2= LEVEL FOR INTERRUPT. 2
L'T7=LI-:vEL FOR INTERRDPT'?
f FORMAT OF LOAD CONTROL PI COMMAND coMwglég
O 3 5 8 ISI? I8 |9202| 22 l1252s2'z2sM3I323334s5
I I R P 0'34“ I 0
SET
Fr ' 7b PS IAIIIHIBE'I ~—~~—~
l . . ' SET
g < REsET lNHlB|T____”_____ CLEAR CA
PARITY GEN. _ RESET
ADVANCE LPW - ---- -- CLEAR CA
RESET DCw INT. ~~—--— STEP CA
RESET EXCEP. INT, —-——~———
RESET PROG, INT --_--~I»~-—-~- LOAD P“