Motorola M68705EVM User manual

M68705EVM/ AD5
.M68705EVM
Evaluation Module
User's Manual

GENERAL INFORMATION II
HARDWARE PREPARATION AND
INSTALLATION INSTRUCTIONS
OPERATING INSTRUCTIONS II
FUNCTIONAL DESCRIPTION II
SUPPORT INFORMATION II
S-RECORD INFORMATION a

a GENERAL INFORMATION
El
HARDWARE PREPARATION AND
INSTALLATION INSTRUCTIONS
B OPERATING INSTRUCTIONS
II FUNCTIONAL DESCRIPTION
II SUPPORT INFORMATION
mS-RECORD INFORMATION

M68705EVM/ ADS
November 1990
M68705EVM
EVALUATION MODULE
USER'S MANUAL
Motorola reserves the right to make changes without further notice to any products herein to
improve reliability, function or design. Motorola does not assume any liability arising out of
the application or use of any product or circuit described herein; neither does it convey any
license under its patent rights nor the rights of others. Motorola products are not authorized
for use as components
in life support devices or systems intended for surgical implant into
the body or intended to support or sustain life. Buyer agrees to notify Motorola of any such
intended end use whereupon Motorola shall determine availability and suitability of its
product or products for the use intended.
Information contained in this document applies to
REVision (C) M68705EVM Evaluation Modules.
EVMbug and EXORciser are trademarks of Motorola Inc.
IBM-PC
is a registered trademark of International Business Machines Corp.
The computer program stored
in the Read Only Memory of the device contains material
copyrighted by Motorola Inc., first published 1987, and may be used only under a license
such as the License For Computer Programs (Article 14) contained in Motorola's Terms and
Conditions of Sale, Rev. 1/79.
Fifth Edition
Copyright 1990 by Motorola Inc.
Fourth Edition May 1987

PREFACE
Unless otherwise specified, all address references are in
hexadecimal throughout this manual.
An asterisk (*) following the signal name denotes that the signal is
true or valid when the signal is low.

CHAPTER 1
1.1
1.2
1.3
1.4
1.5
CHAPTER 2
2.1
2.2
2.3
2.3.1
2.3.2
2.3.3
2.3.4
2.3.5
2.3.6
2.3.7
2.3.8
2.3.9
2.4
2.4.1
2.4.2
2.4.3
2.4.4
2.4.5
TABLE OF CONTENTS
PAGE
GENERAL INFORMATION
INTRODUCTION ............ .... .......... .................. ..... .... .. ... ........ ... ....... .. ......... 1-1
FEATURES ................................................................................................ 1-1
SPECIFICATIONS ................................................................................... 1-1
GENERAL DESCRIPTION ...................................................................... 1-3
EQUIPMENT REQUIRED ........................................................................ 1-4
HARDWARE PREPARATION AND INSTALLATION
INSTRUCTIONS
INTRODUCTION ....................................................................................... 2-1
UNPACKING INSTRUCTIONS .............................................................. 2-1
HARDWARE PREPARATION ................................................................. 2-1
Resident MCU Select Headers
(J2, J14, J16, and J19) .................................................... 2-2
Host CTS and DCD Signal Enable Headers
(J8 and J11) ...................................................................... 2-5
User Map Select Header (J1 O) ................................................. 2-5
Baud Rate Select Headers (J12 and J13) .............................. 2-6
Timer Input Select Header (J15)
... ............................... .... ........ 2-7
Clock Input Select Header (J 17) ......... .... .... ... .......................... 2-8
Timer Prescaler Select Header (J20) ...................................... 2-9
EPROM MCU Programming Select Headers
(J21 thru J24) ................................................................... 2-10
Write Protect Disable Header (J25) ... ....... .... ... .... ... ................. 2-10
INSTALLATION INSTRUCTIONS ........................................................ 2-11
Power Supply -EVM Interconnection ..................................... 2-11
Terminal -EVM Interconnection ............................................... 2-12
Host Computer -EVM Interconnection ...........................
...... ... 2-13
Target System -EVM 28-Pin Interconnection ........................ 2-15
Target System -EVM 40-Pin Interconnection ........................ 2-19
EVALUATION MODULE USER'S MANUAL
M68705EVM
MOTOROLA
i

CHAPTER 3
3.1
3.2
3.3
3.4
3.5
3.6
3.6.1
3.6.2
3.6.3
3.6.4
3.6.5
3.6.6
3.6.7
3.6.8
3.6.9
3.6.10
3.6.11
3.6.12
3.6.13
3.6.14
3.6.15
3.7
3.8
3.9
3.10
3.11
3.11.1
3.11.2
TABLE OF CONTENTS (cont'd)
PAGE
OPERATING INSTRUCTIONS
INTRODUCTION ....................................................................................... 3-1
SWITCHES AND INDICATORS ............................................................ 3-1
LIMITATIONS ............................................................................................ 3-4
OPERATING PROCEDURE .................................................................... 3-5
COMMAND LINE FORMAT .................................................................... 3-7
MONITOR (EVMbug) COMMANDS ...................................................... 3-8
Assembler/Disassembler (ASM) . .. .. .......... .... .. .. .. .. .... .. .. .. .. .... .. . 3-1 O
Block Fill (BF) ............................................................................... 3-12
Breakpoint Set
(BR) .................................................................... 3-1 3
Copy
(COPY) ............................................................................... 3-14
Go
(G) ............................................................................................. 3-15
Load
(LOAD) .. ... .... .. . .. ... .... ... .. .. ... . ... . .. ... ... . .. .. .. . ...... .. . .... .... .. .. . .. .... 3-1 6
Memory Display
(MD) . .. .. .. .. . .. .. ... .... ... .. ... .. ..... .. .. ... .. .. ......... .. .. ... .. 3-17
Memory Modify
(MM) . ... ..... .. .. .. . ... .... .. ............ ... .. ... .. .. . .. . .. ..... .. .. .. 3-18
Remove Breakpoint (NOBR) .......
.. . .. .. ............ .. .. .. ........ .... .. .. . .. .. 3-19
Proceed (P) .. ................ .. .......... .. ................ .. .... .. .... .. .... .. .... .. ......... 3-20
Program (PROG) ......................................................................... 3-21
Register Display
(RD) ................................................................. 3-22
Register Modify
(RM) ................................................................... 3-23
Trace
(T) ........................................................................................ 3-24
Transparent Mode
(TM) .............................................................. 3-25
EPROM MCU ERASING PROCEDURE ............................................... 3-26
EPROM MCU PROGRAMMING PROCEDURE ................................... 3-26
EPROM MCU COPYING PROCEDURE ............................................... 3-28
ASSEMBLY/DISASSEMBLY PROCEDURES ................................... 3-32
DOWNLOADING PROCEDURES ......................................................... 3-35
EXORciserto EVM
.. . .. . .... .. . .. .. .. ... . .. .. .. ... ........... .. ........... .... .. . .. .. .. .. 3-36
IBM-PC to EVM ............................................................................. 3-37
EVALUATION MODULE USER'S MANUAL
ii
MOTOROLA
M68705EVM

CHAPTER 4
4.1
4.2
4.2.1
4.2.1.1
4.2.1.2
4.2.1.3
4.2.2
4.2.2.1
4.2.2.2
4.2.3
4.2.4
4.2.5
CHAPTER 5
5.1
5.2
5.3
5.4
APPENDIX A
TABLE OF CONTENTS {cont'd)
PAGE
FUNCTIONAL DESCRIPTION
INTRODUCTION ....................................................................................... 4-1
EVM DESCRIPTION ................................................................................ 4-1
MCU and Control Circuits .. . .. . .. .... .. .. .. .. .. .. ... .. .......... ... .... ... . ... ...... 4-1
Map Switching ..................................................................
4-2
Abort ................................................................................... 4-4
Address Decoding ........................................................... 4-4
Monitorand User Memory .. .. .. .. .. ... .. .......... .. ... .. .. ........ .. ...... .. .... .. 4-4
Monitor Map Area ............................................................. 4-6
User Map Area .. .. ..... .. .. ... . .. .. . .. .. .. .. ... .. .. ... ..................... ... .. 4-6
Terminal and Host Computer 1/0 Ports .................................... 4-6
MCU Extension 1/0 Ports .. .. .... ...... .. .. . .. .. .. .. .. .... .... ...... .. . .. . .. .. .. .. ... 4-7
EPROM MCU Programmer ............... .. .................................... ... 4-7
SUPPORT INFORMATION
INTRODUCTION ....................................................................................... 5-1
CONNECTOR SIGNAL DESCRIPTIONS ............................................ 5-1
PARTS LIST ........................•.....................................................................
5-7
DIAGRAMS ................................................................................................ 5-10
S-RECORD INFORMATION ............................................................. A-1
EVALUATION MODULE USER'S MANUAL
M68705EVM
MOTOROLA
iii

LIST OF ILLUSTRATIONS
PAGE
FIGURE
2-1. EVM Connector, Switch, Indicator, and Jumper ·
Header Location Diagram ......................................................... 2-3
2-2. Terminal or Host Computer Cable Assembly ..................................... 2-14
2-3. 28-Pin
MCU 1/0 Port Extension Cable Assembly Diagram .......... ... 2-17
2-4. 40-Pin
MCU 1/0 Port Extension Cable Assembly Diagram ............. 2-21
3-1 . Dump Program Flow Chart ... . .. ... .. .............. .. ..... .. ............ .. .. .. ....... .. ..... .. 3-30
4-1.
EVM Block Diagram ................................................................................ 4-3
4-2.
EVM Memory Map .............................. ..... ...... ..... .. ............ .... ....... ............ 4-5
5-1.
EVM Parts Location Diagram ................................................................ 5-11
5-2. EVM Schematic Diagram (7 Sheets) ................................................... 5-13
LIST OF TABLES
PAGE
TABLE
1-1. EVM Specifications .................................................................................. 1-2
1-2. External Equipment Requirements .
...... ....... ...... .................... ...... ....... .. 1-4
3-1.
EVM Control Switches ............................................................................ 3-2
3-2.
EVM Indicators ......................................................................................... 3-3
3-3. Monitor (EVMbug) Commands .............................................................. 3-9
5-1. RS-232C Terminal Port Connector J3
Pin Assignments .................. 5-2
5-2. RS-232C Host Port Connector
J4 Pin Assignments ......................... 5-3
5-3. 28-Pin
MCU 1/0 Port Connector J9 Pin Assignments ................ .. ... .. 5-4
5-4. 40-Pin
MCU 1/0 Port Connector J1 Pin Assignments ....................... 5-5
5-5. Input Power Connector
P1 Pin Assignments . .. ... .............. ... .. ... .. ....... 5-6
5-6.
EVM Parts List ............. .. ....... .. ................................... .. .... .. .... .. ....... .. ........ 5- 7
EVALUATION MODULE USER'S MANUAL
iv
MOTOROLA
M68705EVM

1.1 INTRODUCTION
CHAPTER 1
GENERAL INFORMATION
This manual provides general information, hardware preparation, installation instructions,
operating instructions, functional description, and support information for the M68705EVM
Evaluation Module (hereafter referred to
as EVM). Appendix A contains EVM downloading
S-record information.
1.2 FEATURES
EVM features include:
Economical means of evaluating target systems incorporating M68705 HMOS MCU
family devices.
Monitor/debugger firmware
One-line assembler/disassembler
Host computer download capability
Dual 4K-byte memory maps:
4K monitor EPROM
4K user pseudo ROM
EPROM MCU programmer
MCU (28-pin and 40-pin) extension 1/0 port s
RS-232C terminal and host computer 1/0 ports
1.3 SPECIFICATIONS
Table 1-1 lists the EVM specifications.
EVALUATION MODULE USER'S MANUAL
M68705EVM
MOTOROLA
1-1
II

II
TABLE 1-1. EVM Specifications
CHARACTERISTICS
Internal Clock
External Clock
Memory size:
RAM
Pseudo ROM
MCU extension 1/0 ports:
Ports A,
B, C
Port D
Terminal/host 1/0 ports
Temperature:
Operating
Storage
Relative humidity
Power requirements:
Module
Programmer (VPP)
Dimensions:
Width
Length
EVALUATION MODULE USER'S MANUAL
1-2
SPECIFICATIONS
1 MHz bus operation (4 MHz,
crystal controlled, divided-by-four)
4 MHz or smaller, divided-by-four
(1 MHz or smaller bus operation)
112 bytes
3968 bytes
HMOS compatible (input/output)
HMOS compatible (input only and/
or analog-to digital converter)
RS-232 compatible (RxD and TxD
only)
+25 degrees C
-40 to +85 deg re es C
0 to 90% (non-condensing)
+5
Vdc@ 1.0 A (max)
+12 Vdc@ 0.1 A (max)
-12 Vde @ 0.1 A (max)
+27 Vdc @ 50 mA (max)
13.25 in. (33.6 cm)
9.75 in. (24.8 cm)
MOTOROLA
M68705EVM

1.4 GENERAL DESCRIPTION
The EVM provides a tool for designing, debugging, and evaluating MC6805P2/P4/P6,
MC6805R2/R3, MC6805U2/U3, MC68705P3/P5, MC68705R3, and MC68705U3/U5
Microcomputer Unit (MCU) based target system equipment. By providing all of the essential
MCU timing and 1/0 circuitry, the EVM simplifies user evaluation of the prototype
hardware/software product. The EVM requires a user supplied power supply and an RS-
232C compatible terminal for operation.
The M6805 Family of HMOS MCU devices are evaluated (emulated) by the EVM resident
MC6805R3 MCU. Entering data, program debugging, and EPROM MCU programming is
accomplished by the monitor EPROM firmware via
an external RS-232C compatible terminal
connected to the EVM terminal port connector.
Independent hardware selectable 300-19.2K baud rate selection capabilities are provided for
the terminal and host 1/0 ports. 28-pin and 40-pin MCU 1/0 port connectors facilitate
interconnection of the EVM to the target system for evaluation purposes.
Downloading programs (via Motorola S records) directly from an RS-232C compatible host
computer to the EVM is accomplished via either the host or terminal port connector.
Downloading is accomplished by the use of the monitor commands.
MCU code may be generated using the resident one-line assembler/disassembler, or may be
downloaded to the user program RAM through the host or terminal port connectors. User
code may then be executed using various debugging commands in the monitor. User code
may also
be executed using the user reset switch. MCU device ROM is simulated by write
protecting user program
RAM during program execution.
Jumper selectable options such
as MC6805R2 or MC68705R3/U3 MCU, 2K or 4K user map,
terminal/host baud rate, timer input/prescaler and clock input selection are provided
on the
EVM, as well as
an EPROM MCU programmer. The EPROM MCU programmer, under
monitor firmware control, enables the user to program the contents of either 28-pin or 40-pin
Dual-In-line Package (DIP) EPROM
MCU devices. Switches allow user control of the reset
and abort functions, and EPROM MCU programming functions.
EVALUATION MODULE USER'S MANUAL
M68705EVM
MOTOROLA
1-3
II

1.5 EQUIPMENT REQUIRED
II Table 1-2 lists the external equipment requirements for EVM operation.
TABLE 1-2. External Equipment Requirements
EXTERNAL EQUIPMENT
+5, +12, -12 Vdc power supply*
VPP power supply*
Terminal (RS-232C compatible)
Host computer (RS-232C compatible)**
Terminal/host computer -EVM RS-232C cable assembly*
Target system -EVM MCU 1/0 port extension cable assembly*
Notes:
(1) * Refer to Chapter 2 for details.
(2) ** Optional -not required for basic operation.
EVALUATION MODULE USER'S MANUAL
1-4
MOTOROLA
M68705EVM

CHAPTER 2
HARDWARE PREPARATION AND INSTALLATION INSTRUCTIONS
2.1 INTRODUCTION
This chapter provides unpacking
instructions for the
EVM.
instructions, hardware preparation, and installation B
2.2 UNPACKING INSTRUCTIONS
NOTE
If shipping carton is damaged upon receipt, request carrier's agent
be present during unpacking and inspection of the EVM.
Unpack EVM from shipping carton. Refer to packing list and verify that all items are present.
Save packing material for storing or reshipping the EVM.
2.3 HARDWARE PREPARATION
This portion of text describes the inspection/preparation of EVM components prior to target
system installation. This description will ensure the user that the EVM components are
properly configured for target system operation. The EVM has been factory-tested and is
shipped with factory-installed jumpers.
EVM should be inspected/prepared for jumper placements prior to target system installation.
Figure 2-1 illustrates the EVM connector, switch, indicator, and jumper header locations.
Connectors J1, J3, J4, J9, J18, and
P1 facilitate interconnection of external equipment to the
EVM. Switches S1 through S5 provide user control of the EVM. Indicators CR1, CR2, CR7,
and CR8 provide operational status indications of the EPROM MCU programming circuitry.
Refer
to Chapter 3 for switch and indicator descriptions.
EVALUATION MODULE USER'S MANUAL
M68705EVM
MOTOROLA
2-1

Reference designations J5 through J7 are not assigned. Jumper header locations J2, JS,
J10 through J17, and J19 through J25 provide the following selection capabilities:
a. Resident MCU select (J2, J 14, J16, and J19)
b. Host CTS and DCD signal enable (J8 and J11)
c. User map select (J10)
d. Baud rate select (J12 and J13)
e. Timer input select (J15)
f. Clock input select (J 17)
g. Timer prescaler select (J20)
h. EPROM MCU programming select (J21 thru J24)
i. Write protect disable (J25)
2.3.1
Resident MCU Select Headers (J2, J14, J16, and J19)
Jumper headers J2, J14, J16, and J19 are used to configure four control lines of the resident
MCU socket U21 for either an MC6805R2 or MC68705R3/U3 device. These four control
lines affect MCU pins 7, 8, 15, and 16 (NUM/02, TIMER, ROMSEL, and RAMSEL) in the
configuration of the EVM resident MCU. The EVM
is shipped with an UV erased MC68705R3
MCU installed in socket U21, and jumper headers J2, J14, J16, and J19 are factory-
configured as shown below.
J2 J14 J16 J19
:I :I :I :I (MC68705R3/U3)
3 • 3 • 3 • 3 • (MC6805R2)
(RAMSEL) (NUM/02) (TIMER) (ROMSEL)
If evaluation of the MC68705R2 device is desired, the user must replace the resident
MC68705R3 device with the MC6805R2 device and reposition the fabricated jumpers on
headers J2, J14, J16, and J19 between pins 2 and
3. Refer to paragraph 2.3.5 and 2.3.7 for
additional reconfiguration information. ·
NOTE
The MC68705R3 device may be used to develop MC6805R2
code. The user must utilize the Timer Control Register (TCR) $009
to set the prescaler values (as specified for the mask ROM device)
after power on reset (POR) or normal reset operations. The
MC68705R3 device provides additional capabilities with respect
to the MC6805R2. These capabilities must
be limited by the user.
EVALUATION MODULE USER'S MANUAL
2-2
MOTOROLA
M68705EVM

EVALUATION MODULE USER'S MANUAL
M6805EVM
+5V __ ____,_
GND __ ____,_
+12V __ ____,..._
GND __ ____,..._
-12V -----1-
GND __ ___,_
+27V----
JS
Sl
USER
RESET
S2
ABORT
RS·232C
TERMINAL
CONNECTOR
J3
J2
D
USER MAP
SELECT
RS·232C
HOST COMPUTER
CONNECTOR
J4
RESIDENT
MCU
SELECT
D
HOSTCTS
---
ENABLE
~J10
D
Jll
D
1
HOSTDCD
ENABLE
J25
TERMINAL
BAUD RATE
SELECT
HOST
BAUD RATE
SELECT
~ I
D
\
WRITE
PROTECT
DISABLE
J17
CLOCK INPUT D
SELECT -------
J12 J13
DD J14
D
J18
0
------ EXT CLOCK
INPUT
J20
TIMER D
PRESCALER -----
SELECT
SS ~
MASTER-
RESET
J15
D
TIMER INPUT
SELECT
RESIDENT
MCU
SELECT
J16
D
RESIDENT
MCU
SOCKET
EPROM
MCU
PROGRAMMING
SELECT
J21 J22 J23
U21
40-PIN DIP
PROGRAMMER
SOCKET
Jl
J9
J19
D /
0 00
1
~xuss_
EPROM
MCU
28-PIN DIP
PROGRAMMER -----1
SOCKET
XU57
CR1 CR2
0 0
PROGRAM VERIFY
PROGRAMMING
/
SELEC:., ~N ~
J24
.____----' D
OFFL!J
S4
CRB~N~
OFFL!J
40-PIN MCU
1/0 PORT
CONNECTOR
28-PIN
MCU
1/0 PORT
CONNECTOR
}
PROGRAMMER
Vpp
}
PROGRAMMER
POWER
FIGURE 2-1. EVM Connector, Switch, Indicator,
and Jumper Header Location Diagram
MOTOROLA
2-3/2-4

2.3.2 Host CTS and DCD Signal Enable Headers (JS and J11)
Jumper headers J8 and J11 are used to configure the RS-232C host computer 1/0 port for
semi or full handshaking operation. The EVM is factory-configured for semi handshaking
(high level) operation. This semi handshaking configuration (high level) is accomplished
by
the installation of fabricated jumpers on jumper headers J8 and J11 as shown below.
JS
J11
1 I 1 I
HIGH LEVEL HIGH LEVEL
2 2
FULL HANDSHAKE FULL HANDSHAKE
3 • 3 •
CTS DCD
Should the host computer or modem require full handshake capability, jumpers are to be
repositioned between pins 2 and 3. Refer to the schematic diagrams located in Chapter 5 for
CTS and DCD signal wiring information.
2.3.3 User Map Select Header (J10)
Jumper header J1Ois used to select either a 2K-byte user map for MC68705P3 evaluation or
a 4K-byte user map for MC68705R3/U3 evaluation. The EVM is factory-configured and
shipped with the 4K-byte user map selected. This is accomplished by the installation of a
fabricated jumper
on pins 1 and 2 as shown below.
1
2
J10
I 4K BYTE USER MAP
2K BYTE USER MAP
3 •
EVALUATION MODULE USER'S MANUAL MOTOROLA
M68705EVM 2-5

B
2.3.4 Baud Rate Select Headers (J12 and J13)
Jumper headers J12 and J13 are used to select the baud rate for the RS-232C terminal and
host computer 1/0 ports. The EVM is factory-configured and shipped with the jumpers
installed for 9600 baud rate operation as shown below.
J12
BAUD RATE
J13
• • 2
19200
1 • • 2
3 • • 4
9600 3 • • 4
5 • • 6
4800 5 • • 6
7 • • 8
2400 7 • • 8
9 • •
10 1200
9 • •
10
11
• •
12
600
11 • •
12
13
• •
14
300
13
• •
14
TERMINAL PORT HOST PORT
In the transparent mode, which allows direct communications between the terminal and the
host, the host computer baud rate should
be set one increment lower than the terminal (e.g.,
terminal = 2400 baud, host = 1200 baud). If both baud rates are the same, occasionally a
character may not
be received by the terminal. Download operation is not affected by equal
baud rates.
EVALUATION MODULE USER'S MANUAL
2-6 MOTOROLA
M68705EVM