Gould 8002 User manual

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Gould Multi-Function Processor
Model 8002
Tedllnical Manual
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Publication Order Number:.30:i.-006540-000
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HISTORY
The Gould Multi-Function Processor Technical Manual, Publication Order Number 303-
006540-000, was printed June, 1987.
This manual contains the following pages:
Title page
Copyright page
iii (iv Blank)
v through xiii (xiv Blank)
1-1 through 1-9 (1-10 Blank)
2-1 through 2-21 (2-22 Blank)
3-1 through 3-13 (3-14 Blank)
4-1 through 4-33 (4-34 Blank)
5-1 through 5-8
6-1 through 6-32
IN-l through IN-4
iii (iv Blank)

TABLE OF CONTENTS
Chapter
Page
List of Illustrations.........................................................................................................................xi
List of
Tables ...............................................................................................................................xiii
1 - General Description
1.1 Introduction .......................................................................................................................... 1-1
1.2 Features ................................................................................................................................. 1-1
1.3 Physical Description............................................................................................................. 1-1
1.3.1 MFP Circuit Card ......................................................................................................1-3
'1.3.2 MFP Device Interface Circuit Card ......................................................................... 1-3
1.3.3 Secondary General Purpose Device Interface Circuit Card ...................................1-6
1.4 Functional Description.........................................................................................................1-6
1.4.1 SCSI
Ports ..................................................................................................................1-8
1.4.2 Asynchronous Communications
Ports ......................................................................1-8
1.4.3
Parallel Printer Port .................................................................................................1-8
1.4.4 System
Timer .............................................................................................................1-8
1.5 Software ................................................................................................................................1-8
1.6 Specifications.........................................................................................................................1-8
2 - Controls, Indicators, and Connectors
2.1 Introduction .......................................................................................................................... 2-1
2.2 Controls, Indicators, and Connectors, MFP Circuit Card ................................................ 2-1
2.2.1 Controls, MFP Circuit Card ..................................................................................... 2-1
2.2.1.1 On Line/Off Line Switch, MFP Circuit Card ............................................. 2-1
2.2.1.2 Jumpers, MFP Circuit Card ........................................................................ 2-1
2.2.2 Indicators, MFP Circuit Card ..................................................................................2-6
2.2.3 Connectors,
MFP Circuit Card.................................................................................2-8
2.2.3.1 Connector
Jl, Address and Control.............................................................. 2-9
2.2.3.2 Connectors J2 and J3, ROM-SIM ................................................................. 2-9
2.2.3.3 Connector J4, Y-Bus ......................................................................................2-9
2.3 Controls, Indicators, and Connectors, MFP DI Circuit
Card ........................................2-12
2.3.1 Jumpers,
MFP DI Circuit Card ..............................................................................2-12
2.3.2 Connectors, MFP
DI Circuit Card .........................................................................2-15
2.3.2.1 Connector
Jl, SCSI Bus 1...........................................................................2-15
2.3.2.2 Connector J2, SCSI Bus 2...........................................................................2-16
2.3.2.3 Connector J3, Asynchronous
Ports 0 - 3...................................................2-17
2.3.2.4 Connector J4, Asynchronous
Ports 4 - 7...................................................2-17
2.3.2.5 Connector J5, External
Interrupts and Clock ..........................................2-18
2.3.2.6 Connector J7, Line
Printer .........................................................................2-19
2.3.2.7 Connector J8, Turnkey Panel ....................................................................2-19
c 3 - Operation
3.1 Introduction .......................................................................................................................... 3-1
3.2 Overview ............................................................................................................................... 3-1
3.3 System Turnkey Panel Mode............................................................................................... 3-1
MFP
Technical Manual Contents v

This manual is supplied without representation or warranty of any kind. Gould Inc., Computer
Systems Division therefore assumes no responsibility and shall have no liability of any kind
arising from the supply or use of this publication
or any material contained herein.
Copyright
1987
Gould Inc., Computer Systems Division
Printed in U.S.A.

TABLE OF CONTENTS (continued)
Chapter
.Page
4.6 I/O Command Doubleword ...............................................................................................4-13
4.6.1
10CD Commands Supported by the MFP ......................·.......................................4-15
4.6.1.1 Channel Control Command........................................................................4-15
4.6.1.2 Write Command..........................................................................................4-16
4.6.1.3 Read Command...........................................................................................4-16
4.6.1.4 Device Control Command ..........................................................................4-16
4.6.1.5 Sense Command ..........................................................................................4-16
4.6.1.6 Transfer-In-Channel Command .................................................................4-17
4.6.2
10CD Real Data Address Fields.............................................................................4-17
4.6.3
10CD Flag Fields .....................................................................................................4-17
4.6.4 10CD Byte Count Field...........................................................................................4-18
4.7
I/O Status Doubleword......................................................................................................4-18
4.7.1 Subaddress................................................................................................................4-19
4.7.2
10CD Address...........................................................................................................4-19
4.7.3
Status Flag Bits .......................................................................................................4-19
4.7.3.1
Post Program Controlled Interrupt.. .........................................................4-19
4.7.3.2 Incorrect Length..........................................................................................4-21
4.7.3.3 Channel Program Check.............................................................................4-21
4.7.3.4 Channel
Data Check...................................................................................4-22
4.7.3.5 Interface Check ...........................................................................................4-22
4.7.3.6 Busy ..............................................................................................................4-22
4.7.3.7
Status Modifier ............................................................................................4-22
4.7.3.8 Controller End.............................................................................................4-22
4.7.3.9
Attention ......................................................................................................4-23
4.7.3.10 Channel End/Device End...........................................................................4-23
4.7.3.11 Unit Check ..................................................................................................4-23
4.7.3.12 Unit Exception ............, ..............................................................................4-23
4.7.4 Remaining Byte Count ............................................................................................4-23
4.8 CPU
Scratch Pad and Interrupt Vectors.........................................................................4-23
4.8.1 CPU Scratch
Pad .....................................................................................................4-24
4.8.1.1 Device
Entry ................................................................................................4-24
4.8.1.2
Interrupt Entry ...........................................................................................4-24
4.8.2
Interrupt Vector Table............................................................................................4-24
4.9
Interrupts ............................................................................................................................4-24
4.9.1
Interrupt States ........................................................................................................4-24
4.9.1.1
Interrupt States, Described ........................................................................4-28
4.9.1.2
Interrupt State Control Flags....................................................................4-30
4.9.1.3 Interrupt State Events ...............................................................................4-31
4.9.2
Interrupt Instructions..............................................................................................4-31
4.9.2.1 Enable Channel
Interrupt ..........................................................................4-32
4.9.2.2 Disable Channel Interrupt ..........................................................................4-32
4.9.2.3 Activate Channel
Interrupt .......................................................................4-32
4.9.2.4 Deactivate Channel
Interrupt ....................................................................4-32
4.10 Special MFP I/O Functionality........................................................................................4-32
4.10.1 Start I/O Queuing...................................................................................................4-32
4.10.2 10CD Prefetching....................................................................................................4-33
4.10.3 Sense Information....................................................................................................4-33
4.10.4 Skip 10CD's .............................................................................................................4-33
MFP
Technical Manual
Contents
vii

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TABLE OF CONTENTS (continued)
Chapter
Page
5 - Real Time Functions
5.1 Introduction .......................................................................................................................... 5-1
5.2 Overview ............................................................................................................................... 5-1
5.3 Real Time Function Interrupts ........................................................................................... 5-1
5.3.1 Scratch Pad Entries................................................................................................... 5-1
5.3.2 Internal Interrupt Polling..........................................................................................5-2
5.3.3 Interrupt Control Instructions...............:..................................................................5-2
5.4 Software Interrupts ..............................................................................................................5-3
5.5 External Interrupts ..............................................................................................................5-3
5.5.1 External Interrupt Input...........................................................................................5-4
5.5.2 External Interrupt Output ........................................................................................5-4
5.6 Interval Timer ......................................................................................................................5-4
5.7 Real Time Clock................................................................................................................... 5-8
6 - I/O Support
viii
6.1 Introduction .......................................................................................................................... 6-1
6.2 Overview ............................................................................................................................... 6-1
6.3 SCSI Support ..................................................................................................................:..... 6-1
6.3.1 SCSI Initialization...................................................................................................... 6-1
6.3.2 SCSI Commands......................................................................................................... 6-3
6.3.2.1 Write (direct and sequential access) ........................................................... 6-3
6.3.2.2 Read (direct and sequential access)............................................................. 6-4
6.3.2.3 Sense (direct and sequen tial access) ............................................................ 6-5
6.3.2.4 Seek {direct access only)............................................................................... 6-5
6.3.2.5 Reassign Block (direct access only) ............................................................. 6-5
6.3.2.6 Write Many Filemarks (sequential access only)......................................... 6-6
6.3.2.7 Rewind {sequential access only)................................................................... 6-6
6.3.2.8 Rezero (direct access only) ........................................................................... 6-6
6.3.2.9 Advance Record (sequential access only)...........:........................................ 6-6
6.3.2.10 Read Capacity {direct access only)............................................................. 6-6
6.3.2.11 Backspace Record (sequential access only) ................................................ 6-6
6.3.2.12 Space One Filemark (sequential access only) ............................................ 6-6
6.3.2.13 Backspace One Filemark (sequential access only)..................................... 6-7
6.3.2.14 Set Mode (sequential access only)............................................................... 6-7
6.3.2.15 Write One Filemark (sequential access only) ............................................ 6-7
6.3.2.16 Reserve Unit (direct and sequential access)............................................... 6-7
6.3.2.17 Inquiry (direct and sequential access) ........................................................ 6-7
6.3.2.18 Release Unit (direct and sequential' access) ............................................... 6-7
6.3.2.19 Transfer Command Packet (direct and sequential access) ...................... 6-8
6.3.2.20 Space Many Filemarks (sequential access only) ........................................ 6-8
6.3.3 Non-Optimized SCSI Support, Class Fl .................................................................. 6-8
6.3.4 Optimized SCSI Support, Class F2.........................................................................6-10
6.3.5 Mixing Class Fl and F2 Protocols..........................................................................6-10
6.4 Line Printer .........................................................................................................·................6-10
6..1.1 Line Printer Control Commands ............................................................................6-12
Contents
MFP
Technical Manual
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TABLE OF CONTENTS (continued)
Chapter
Page
6.4.1.1 Do Paper Control (Force Print}.................................................................6-12
6.4.1.2 Line Advance Skip
Count ...........................................................................6-12
6.4.1.3 Advance
to Top Of Form ...........................................................................6-14
6.4.1.4 Clear Line
Printer Buffer............................................................................6-14
6.4.2
Paper Control Instruction .......................................................................................6-14
6.4.3 Line
Printer Write Commands ...............................................................................6-15
6.4.3.1 Allow
Paper Control ...................................................................................6-15
6.4.3.2
Post Print .....................................................................................................6-15
6.4.3.3 Line Advance Skip
Count ...........................................................................6-15
6.4.3.4 Advance
To Top Of Form ..........................................................................6-17
6.4.3.5
Clear Line Prin ter Buffer............................................................................6-17
6.4.4 Line
Printer Sense Command .................................................................................6-17
6.4.4.1 Bus
Out Check ............................................................................................6-18
6.4.4.2
Operator Intervention Required ................................................................6-18
6.4.4.3
Command Reject.........................................................................................6-18
6.4.4.4
Top of Form .................................................................................................6-18
6.4.4.5 Beginning
of Form .......................................................................................6-18
6.4.4.6 Off Line.........................................................................................................6-18
6.4.4.7 Device Check ...............................................................................................6-18
6.4.4.8 Device Power ...............................................................................................6-18
6.4.4.9 Device Verify ...............................................................................................6-18
6.4.5 Channel
Status Responses.......................................................................................6-19
6.4.5.1 Normal Completion.....................................................................................6-19
6.4.5.2 Unit Check...................................................................................................6-19
6.4.5.3 Unit Exception..............................................................................................6-19
6.5 Asynchronous
Port Support ...............................................................................................6-19
6.5.1 Asynchronous
Port Write Commands....................................................................6-20
" 6.5.1.1
Write ............................................................................................................6-20
6.5.1.2 Write with Input Subchannel Monitoring..................................................6-20
6.5.1.3 Write with Hardware Flow Control Only.................................................6-21
6.5.2 Asynchronous
Port Read Commands..................................................................... 6-21
6.5.2.1 Read .............................................................................................................6-21
6.5.2.2 Rea.d Echoplex .............................................................................................6-22
6.5.2.3 Read with Flow Control .............................................................................6-22
6.5.2.4 Read with
Hardware Flow Control Only..................................................6-22
6.5.3 Asynchronous
Port Control Commands.................................................................6-22
6.5.3.1 No
Operation ...............................................................................................6-23
6.5.3.2 Sense .............................................................................................................6-23
6.5.3.3 Define Special
Character ............................................................................6-28
6.5.3.4 Reset
Data Terminal Ready ......................................................................6-29
6.5.3.5 Set
Data Terminal Ready ..........................................................................6-29
6.5.3.6 Reset Request
To Send ...............................................................................6-29
6.5.3.7 Set Request To Send...................................................................................6-29
6.5.3.8 Reset Break..................................................................................................6-29
6.5.3.9 Set Break .....................................................................................................6-29
6.5.3.10 Enable
Port Drivers....................................................................................6-30
6.5.3.11 Disable Port Drivers...................................................................................6-30
6.5.3.12 Transparent Flow Control.........................................................................6-30
6.5.3.13 Define Parameters ...................................................................................... 6-31
6.6 Expansion Port ...................................................................................................................6-32
MFP
Technical Manual
Contents
ix (x Blank)
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LIST OF ll.LUSTRATIONS
Figure
Title Page
1-1
MFP Installed in Typical Card Cage .......................................................................................1-2
1-2 Physical
Layout of the MFP Circuit Card ..............................................................................1-4
1-3 Physical
Layout of the MFP DI Circuit Card .........................................................................1-5
1-4
Functional Block Diagram with MFP ...................................................................................... 1-7
2-1
MFP Circuit Card Layout .........................................................................................................2-2
2-2 Typical
Jumper Header .............................................................................................................2-4
2-3
MFP DI Circuit Card Layout ..................................................................................................2-13
3-1
General Purpose and Base Register Display Format ..............................................................3-4
3-2
State Indicator Display Format ................................................................................................3-4
3-3 General Display
Indicator Format .............................................,.............................................3-5
4-1
Start I/O Instruction Decoding.................................................................................................4-2
4-2
Termination of an I/O Operation ............................................................................................4-4
4-3
Interrupt Context Block (ICB) Format ....................................................................................4-7
4-4 Class F
I/O Machine Language Format ..................................................................................4-8
4-5
Input/Output Command Doubleword (lOCD) Format .........................................................4-14
4-6
Status Doubleword Format .....................................................................................................4-20
4-7
Device Entry, CPU Scratch Pad Word Format ....................................................................4-25
«
4-8 Interrupt Entry, CPU Scratch Pad Word Format ................................................................4-26
5-1
External Interrupt, Input Pulse Parameters ...........................................................................5-5
5-2
External Interrupt, Output Pulse Parameters ........................................................................5-5
5-3 Command Device (CD)
Instruction Format .............................................................................5-7
6-1
SCSI Initialization Protocol ...................................................................................................... 6-2
6-2 SCSI Class Fl Protocol.................................................................................................·............. 6-9
6-3 SCSI Class F2 Protocol............................................................................................................ 6-11
6-4 Line Printer Control Commands Word Format ....................................................................6-13
6-5 Line
Printer Write Commands Word Format .......................................................................6-16
MFP
Technical Manual
Contents
xi (xii Blank)

LIST OF TABLES
Table Title Page
1-1 Specifications............................................................................................................................... 1-9
2-1 SelBUS Priority Jumpers...........................................................................................................2-5
2-2 Physical Channel Address and Turnkey Panel Jumpers ........................................................2-7
2-3 Interval Timer Clock Rate Jumpers.........................................................................................2-8
2-4 Real-Time Clock
Rate Jumpers................................................................................................2-8
2-5 MFP Error Codes Displayed by DS! - DS3 .............................................................................. 2-9
2-6
Connector Jl, Address and Control........................................................................................2-10
2-7 Connector J2, ROM-SIM (bits 32 -47)...................................................................................2-10
2-8 Connector J3, ROM-SIM (bits 00 -31)................................................................................... 2-11
2-9 Connector J4, y-Bus................................................................................................................. 2-11
2-10 SCSI Bus 1 Jumpers.................................................................................................................2-14
2-11 SCSI Bus 2 Jumpers.................................................................................................................2-15
2-12 Turnkey Panel
Port Configuration Jumpers.........................................................................2-16
2-13 Connectors
Jl and J2, SCSI Bus ............................................................................................2-17
2-14 Connector J3, Asynchronous
Ports 0 - 3................................................................................2-18
2-15 Connector J4, Asynchronous
Ports 4 - 7................................................................................2-19
2-16 Connector J5,
External Interrupts and Clock.......................................................................2-20
2-17 Connector J7, Line Printer .....................................................................................................2-20
2-18 Connector J8, Turnkey Panel ................................................................................................. 2-21
3-1 Description of State Indicators.................................................................................................3-4
3-2 Console CRT Commands...........................................................................................................3-6
4-1 MFP Class F I/O Instructions ..................................................................................................4-9
4-2 Interrupt Vectors......................................................................................................................4-27
4-3 Interrupt States ........................................................................................................................4-29
5-1 RTF Subaddress Functions........................................................................................................5-2
5-2 Real Time Clock Parameters ....................................................................................................5-8
6-1 SCSI Commands......................................................................................................................... 6-4
MFP
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1.1 Introduction
CHAPTER 1
GENERAL DESCRIPTION
This technical manual contains the information pertaining to the Multi-Function Processor
(MFP). The
MFP is manufactured by Gould Inc., Computer Systems Division, Fort Lauderdale,
Florida.
The information
in this manual is presented in the following order:
• Chapter 1 - General Description
• Chapter 2 - Controls, Indicators, and Connectors
• Chapter 3 - Operation
• Chapter 4 - Programming
•
Chapter 5 - Real Time Functions
• Chapter 6 - I/O Support and Interface
The assemblies, logic drawings, and schematics are contained in the Multi-Function Processor
Drawings Manual, Publication Order Number 304-006540.
1.2 Features
NOTE
The acronym MFP, as used throughout this manual, is
synonymous with the Multi-Function Processor, unless
otherwise noted.
• Two Small Computer System Interface (SCSI) Ports
• Eight Asynchronous Communications Ports
• Line Printer Interface
• Turnkey Panel Interface (optional)
• System Timer (Real-Time Clock/Interval Timer)
• External Interrupt Input and/or Output
• General Purpose Expansion Interface
1.3 Physical Description
The Multi-Function Processor consists of the MFP circuit card, the MFP device interface
circuit card, and an optional general purpose device interface circuit card. See figure
1-1.
MFP
Technical Manual
General Description
1-1

Figure 1-1. MFP Installed in Typical Card Cage
1-2
General Description
870013
MFP
Technical Manual

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1.3.1 MFP Circuit Card
The MFP is contained on a single 15 inch wide by 18 inch deep plug-in type circuit card. See
figure 1-2.
At one edge of the MFP circuit card are a row of gold fingers which run the full width of the
circuit
card and provide the electrical interface with the backplane. At the other edge of the
MFP circuit card is an on line/off line switch, four light emitting diode (LED) displays, and
three connectors. Also located on the
MFP circuit card are jumper locations Xl through X9
and connector J4.
The gold fingers
a.re segmented into three groups: the center group, consisting of 184 gold
fingers, provides the interface with the SelBUS; the two outer groups, each consisting of 50 gold
fingers, provides the interface with the
MFP device interface circuit card. The interface with
the
MFP device interface circuit card is provided through a passive section of the backplane.
The on line/off line switch provides a means
to logically disconnect the MFP from the SelBUS
without physically removing it. Refer to Chapter 2, Controls and Indicators, for a complete
description of this switch.
The four LED displays provide a visual indication
as to the current state of the MFP. Refer to
Chapter 2, Controls and Indicators, for a complete description of these displays.
The four connectors (JI, J2, J3, and J4) provide a means of connecting
test equipment to the
MFP. Normally, there are no connections made to these connectors in the operational
environment; however, the connectors are assigned as follows:
• Jl -address and control interface
• J2 -ROM-SIM bits 32 through 47
• J3 -ROM-SIM bits 00 through 31
• J4 - Y bus interface
Refer
to Chapter 2, Controls and Indicators, for a complete description of these connectors.
The jumpers Xl through X9 are used to set up the MFP circuit card for operation in a specific
computer system. The jumpers are assigned as follows:
• Xl through X6 - Se'lBUS priority poll
• X7 -channel address and turnkey panel enable
• X8 -interval timer clock rate
• X9 -real-time clock control rate
Refer to Chapter 2, Controls and Indicators, for a complete description of these jumpers and
details for
setting them up.
1.3.2 MFP Device Interface Circuit Card
The MFP device interface is contained on a single 15 inch wide by 9.2 inch deep plug-in type
circuit card. See figure 1-3.
The MFP device interface c.ircuit card consists of two connectors on the edge of the circuit
card that interfaces with the backplane, eight connectors that interface with input/output
(I/O) devices external to the MFP, and three jumper locations Xl, X3, and X4.
MFP
Technical Manual General Description
1-3

STIFFENER
SelBUS ~;U:----I---..J
PRIORITY POLL
CHANNELADDAESS
AND TURNKEY PANEL; .---Lx7
ENABLE
y-eUS----------+- __________ -+
ROM-SIM _____ -I-
Brrs 00-31
ROM-SIM
errs 32-63
INTERVAL TIMER
CLOCK RATE
R-T CLOCK
+------+---- CONTROL
-i-+--- ON/OFF LINE
LEO DISPLAYS
NOTE: DOTS DESIGNATE PIN 1 87D3J01
1-4
Figure 1-2. Physical Layout or the MFP Circuit Card
General Description
MFP
Technical Man ual
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SCSI
BUS 1
SCSI BUSES 1 AND 2
ADDER ESSES
ASYNC
PORTS--------~-jr
:::::::4--------.- STIFFENER
MFP
E4-E7
EXTERNAL ___ +
INTERRUPTS
LINE __ ---'f"
PRINTER -~"'""'''
TURNKEY
PANEL
LINE PRINTER
CONTROL
CONSOLE PORT
BAUD RATE
NOTE: DOT DESIGNATES PIN 1
Figure 1-3. Physical Layout of the MFP DI Circuit Card
Technical Manual
General Description
87D3J02
1-5

The two connectors that interface with the backplane are passive to the backplane, they
provide the interface for the
MFP circuit card; therefore, the MFP circuit card and the MFP
device interface circuit card must occupy the same slot position on the SelBUS circuit card
chassis. See figure 1-1.
The eight connectors on the
outer edge of the circuit card provides the interface with external
I/O devices. The connectors are labeled J1 through J8 and interface with the following devices:
.JI -SCSI bus 1
• J2 -SCSI bus 2
• J3 -asynchronous ports 0 through 3
• J4 -asynchronous ports 4 through 7
• J5 -external interrupts
• J6 -not used
.J7 -line printer
• J8 -turnkey panel
The jumpers
Xl through X4 are used to set up the MFP device interface circuit card for
operation in a specific computer system configuration.
The jumpers are assigned as follows:
• Xl -SCSI bus address
• X2 -not used
• X3 -turnkey panel baud rate
• X4 -line printer control
Refer to
Chapter 2, Controls and Indicators, for a complete description of these jumpers and
details for setting them up.
1.3.3 Secondary General Purpose Device Interface Circuit Card
The secondary general purpose device interface is an optional circuit card. It is contained on a
single
15 inch wide by 9.2 inch deep circuit card. It connects to the MFP device interface
circuit card via the
PIC/PIA jumper cards that are provided when the general purpose device
interface circuit card
is ordered. Refer to the specific general purpose device interface circuit
card technical manual
for a complete description.
1.4 Functiona.l Description
The MFP is a single slot, Class 'F' protocol, I/O processor, SelBUS interfaced, circuit card. It
provides two Small Computer System Interface (SCSI) ports, eight asynchronous
communications ports (one port can
be utilized by the optional system console CRT), one
parallel printer port, the system timer (Real-Time Clock/Interval Timer), and 12 external
interrupts. The MFP, when combined with a CPU and memory, produces a basic computer
system. See figure
1-4.
1-6
General Description
MFP
Technical Manual
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