Arcom TARGET188EB Manuale utente

Contents

Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

The Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Name Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Problem? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Contents - Packing List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Utility Disks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Anti-Static Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Electromagnetic Compatibility (EMC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Section 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Section 2. Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Equipment required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Section 3. Links and Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Default Link Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

User Configuration Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Section 4. Using the TARGET188EB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Programmable Memory and I/O Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Memory Map After Power-up/Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

On-Board Control Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

User Links and LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2192-08275-000-000

J543 TARGET188EB

TARGET188EB

User Manual

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2192-08275-000-000Revision History

J543 TARGET188EB

Page 3

Revision History

Manual

Version/Issue

PCB

V 1 Iss 1

V1 Iss 1

961107 First release.

961218 Edits to Appendix F. Circuit Diagrams.

Comments

The choice of boards and systems is the responsibility of the buyer, and the use to which they are put

cannot be the liability of Arcom Control Systems Ltd. However, Arcom’s sales team is always available to

assist you in making your decision.

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Preface

The Manual

This manual details the operation and features of Arcoms

TARGET188EB boards. It has been designed as both a guide to

getting started with the TARGET188EB Development Kit and a

reference for the hardware features of the board.

Name Conventions

Throughout this document an asterisk * suffix to a signal name

denotes that a signal is active low (e.g. DATACK*).

All numbers are in decimal unless otherwise indicated. Where a

number is suffixed by h the value is in hexadecimal format.

Problem?

If you have any problems finding information about this board, or

the board fails to work, or something is missing, please contact

Arcom Customer Support at our offices in Cambridge, UK.

If the engineers are busy please leave a message, or alternatively,

send a facsimile message. Please state:

Your name, telephone and facsimile numbers

 The time and date

 The product name

 The problem

Arcom Customer Support: Tel: 01223 412428

Fax: 01223 410457

For US callers: Tel: (816) 941 7025

For US callers: Fax: (816) 941 0343

Internet: [email protected]

[email protected]

Arcom Main Switchboard: Tel: 01223 411200

Fax: 01224 403400

Contents - Packing List

In your TARGET188EB Development Kit package you should have:

 A TARGET188EB in a sealed anti-static bag.

 A document titled TARGET188EB User Manual (this document)

 An SVIF1 Development Interface Module

 A CAB-SVIF1 Development Interface Cable

A high density 3 1/2 floppy disk titled TARGET188EB Monitor

Disk

2192-08275-000-000Preface

J543 TARGET188EB

Page 5

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Section 1. Introduction

TARGET188EB is a Eurocard sized target CPU board developed

specifically for embedded applications offering the following

features:

 Intel 188EB microprocessor running at 25MHz

 STEbus 8-bit expansion interface

 PC/104 8-bit expansion interface

128KB SRAM as standard, 256KB option available (8-bit wide

access)

 128KB socketed ROM on-board as standard (8-bit wide) with

resident monitor software

 Socket for further 32/64/128/256KB ROM which may be 5V

Flash EPROM

 Programmable memory and I/O maps

 Two 120KBaud (max.) RS232 serial communications ports (one

Zilog 85230 SCC)

 Watchdog timer

 One TTL 8-bit digital output port

 One TTL 8-bit digital input port

 One TTL 8-bit digital input/output port

 Flexible hardware interrupt support

 Software development/download port (SVIF1 port)

 Two user links

 Two user LEDs and +5V power LED

The TARGET188EB is available as two variants:

This manual covers both variants.

The TARGET188EB is shipped with a software monitor blown into

a 128K EPROM to allow simple exercising of the board and

downloading application code. The remote target portion of

Arcoms SourceVIEW development software is also blown into the

ROM. By using the board with the TARGET188EB Development Kit

the user can develop and debug application software very quickly.

2192-08275-000-000Section 1. Introduction

J543 TARGET188EB

Page 7

Variant Name

TARGET188EB

TARGET188EB-H

STEbus Master and PC/104 Master

128k SRAM

STEbus Master and PC/104 Master

256k SRAM

Specification

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Section 2. Getting Started

This section is designed to familiarise the user with the features of

the TARGET188EB and demonstrate the use of the monitor

software.

Equipment required

 TARGET188EB Development Kit

 STEbus rack and backplane with power supply OR

 Power supply (+5V at 1A minimum) connected up to PL4 (see

Appendix B. Connections)

 IBM PC/AT compatible computer running terminal emulation

software

Installation & Monitor Startup

Refer to Target188EB Quickstart Manual for more comprehensive

instructions with drawings.

1. Ensure that the links on the TARGET188EB board are in their default

configurations (see Section 3. Links and Options).

2. From the TARGET188EB Development Kit take the CAB-SVIF1

cable and plug the 10 way ribbon cable connector into the SVIF1 PL2

header.

3. Plug PL1 of the SVIF1 into PL2 (software development/download

port) on the TARGET188EB. The body of the SVIF1 should lie over

the TARGET188EB.

4. Align the TARGET188EB into the STEbus rack until it mates with

one of the backplane connectors.

5. Wire the +5V power supply cable to pin 2 of the PL4 screw terminal

block and the 0V cable to either pin 5 or pin 6 of the terminal block.

6. Plug the 9 way D-type connector marked channel B on the CAB-

SVIF1 cable into one of the COM ports on the PC/AT computer.

7. Configure the terminal emulation software on the PC/AT for

communications via the appropriate COM port at 19200 Baud with

8 data bits, no parity and 1 stop bit. Set the protocol to 'none'.

8. Turn on the STEbus rack OR power supply - the surface mount

power indicator LED on the TARGET188EB will illuminate.

2192-08275-000-000Section 2. Getting Started

J543 TARGET188EB

Page 9

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Section 3. Links and Options

Default Link Positions

Note: A + next to a link position indicates the default shipping position.

LK1. STEbus SYSRST*

LK2. INT3 source selection (1 link of 2)

LK3. INT2 source selection

LK4. INT0 source selection

2192-08275-000-000Section 3. Links and Options

J543 TARGET188EB

Page 11

LK1 Function

Board drives SYSRST* to backplane

Board receives SYSRST* from backplane

Board can be reset by push-button connected to PL3 only

LK2 Function

PC/104 IRQ7 or STEbus TFRERR* (see LK13 also)

STEbus ATNRQ3*

LK3 Function

PC/104 IRQ5

STEbus ATNRQ2*

LK4 Function

PC/104 IRQ3

STEbus ATNRQ0*

LK16

LK17

LK18

B LK15 A

B LK14 A

LK8 A

LK9

LK10

LK11

LK12 1

B A

LK13

LK7

LK1

LK2

LK3

LK4

LK5

LK6 A B

ROM 0 ROM 1

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2192-08275-000-000Section 3. Links and Options

J543 TARGET188EB

Page 13

LK16 Function

Run application starting at memory address C0000H

Run monitor software

Omit

+Fit

LK17 Function

CPU port P2 bit 4 reads as 1

CPU port P2 bit 4 reads as 0

Omit

+Fit

LK18 Function

CPU port P2 bit 5 reads as 1

CPU port P2 bit 5 reads as 0

Omit

+Fit

LK13 Function

STEbus TFRERR*

PC/104 IRQ7

LK15 Function

Timer1 source driven from Timer0 out (cascade)

Timer1 source driven from external source

LK14 Function

Watchdog strobe driven from BCLK (i.e. disabled)

Watchdog strobe driven from 188EB port 2 bit 3 (i.e. enabled)

LK12 1A 1B 2A 2B

EPROM size

32K

64K

128K

256K

omit

fit

omit

fit

omit

LK14. Watchdog source selection

LK15. Timer 1 source selection

LK12. ROM1 size selection - see also LK10 & LK11

Note: Both EPROMs must be of the same size

LK13. INT3 source selection (2 link of 2)

LK16. Run Mode Select

Selects whether the processor runs the monitor software or the users

application code after a power-up or reset. Application code must be

set to start running at C0000H (lowest EPROM memory address).

LK17. User LInk 1. - CPU port P2 bit 4

LK18. User Link 2. CPU port P2 bit 5

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Section 4. Using the TARGET188EB

Programmable Memory and I/O Map

The TARGET188EB has a very flexible scheme for locating its on-

board memory, peripherals and expansion busses in its memory and

I/O maps. The 188EB processor has eight outputs called general

chip selects, GCS0 to GCS7. These outputs may be programmed so

that they become active over a range of memory or I/O addresses

and can be used to activate devices connected to the 188EB. The table

below shows how the chip selects are used on the TARGET188EB

with the default address ranges programmed by the monitor after

initialisation.

Chip selects GCS0, GCS1, GCS2 and GCS3 are activated for the

address ranges indicated in the table to control CPU accesses to the

on-board memory and peripherals.

Any CPU access to an address that is not covered by one of GCS0,

GCS1, GCS2 or GCS3 is automatically directed to the PC/104 bus.

Boards using the STEbus can access peripheral boards on both

PC/104 and STEbus. The STEbus is the non-default expansion bus.

As shown in the table above, 188EB chip selects GCS4, GCS5, GCS6

and GCS7 can be used to direct CPU accesses that would normally

go into the PC/104 bus to access the STEbus expansion bus instead.

This example illustrates the use of GCS3 to GCS6. The monitor

software sets the TARGET188EB up so that the memory area from

200000h(128k RAM) or 40000h(256k RAM) to 7FFFFh is directed to

the PC/104 bus by default. The user has an STEbus memory board

that exists in the memory address range 60000h to 6FFFFh. Any one

of GCS4 to GCS7 may be programmed to cover 60000h to 6FFFFh

and CPU accesses to any address in this range will then be diverted

to the STEbus instead of the PC/104.

GCS4, GCS5, GCS6 and GCS7 can be programmed very flexibly to

create multiple holes in the PC/104 memory or I/O space that are

directed to the STEbus.

2192-08275-000-000Section 4. Using the TARGET188EB

J543 TARGET188EB

Page 15

188EB

Chip Select

GCS7

GCS6

GCS5

GCS4

GCS3

GCS2

GCS1

GCS0

TARGET188EB Chip Select Use

Accesses STEbus

Parallel port

SVIF1 port

85C230 SCC Interrupt acknowledge

85C230 SCC

Default Address Range

not programmed or enabled

FC0C-FC0F

not programmed or enabled

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Memory space between the bottom of ROM and the top of main

RAM (location selected by LCS) will be automatically mapped to the

PC/104 bus. GCS4-7 can be programmed to direct accesses to the

STEbus.

Note: when running the monitor software on 256KB RAM variants of

board the extra 128KB of RAM is not accessible until chip select LCS is re-

programmed.

I/O Map

On-Board Control Registers

SVIF1 Port Registers

The SVIF1 port takes up 4 bytes of I/O space.

The default base address of the SVIF1 port under the monitor

software is I/O FC0Ch.

Bus Timeout Clear

A read from the I/O address range setup for chip select GCS3

(parallel port) will clear a bus timeout when address lines A0 and A1

are high.

2192-08275-000-000Section 4. Using the TARGET188EB

J543 TARGET188EB

Page 17

FFFFh

FC0Fh

FC0Ch

F8FFh

F000h

EFFFh

0000h

PC/104

STEbus (GCS4-7)

SVIF1 Port

On-chip peripherals (interrupt controllers,

timers, SCC)

PC/104

STEbus (GCS4-7)

1 1

Channel A Data

Channel B Data

Channel A Control

Channel B Control

A0 Function

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Parallel I/O port

To use this onboard facility it is necessary to program GCS3 for the

address range required.

There are three TTL 8-bit digital I/O ports covered by this chip

select.

1 digital I/O port

1 digital input port

1 digital output port

To access the output port A1 and A0 must be 0.

To access the input port A1 is a 0 A0 is a 1.

To access the I/O port A1 is a 1 A0 is a 0.

If a read occurs from the I/O address range set in GCS3 and A1 and

A0 are 1 this will clear a bus time-out.

When using the I/O port as an input port firstly set the outputs to

1.

STEbus Support

The TARGET188EB is compliant with the STEbus IEEE1000

specification.

PC/104 Support

The TARGET188EB is compliant with version 2.3 of the PC/104

specification. It supports memory and I/O reads and writes as a sole

master to 8 bit PC/104 peripheral boards. It does not support DMA

or other PC/104 masters in the same module stack.

Battery Back-up

The TARGET188EB supports battery backup of its main system

SRAM via the +VSTBY line on the STEbus or via pin 1 of the power

connector PL4.

Using the STEbus, a +5V source should be connected between

+VSTBY (+ve terminal) and GND (-ve terminal) on the STEbus

backplane.

Using the board as an SBC, a +5V source should be connected

between pin 1 (+ve terminal) and pin 6 (-ve terminal) of PL4.

Battery backup current is approximately 140uA.

2192-08275-000-000Section 4. Using the TARGET188EB

J543 TARGET188EB

Page 19

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