the next available stack location. Therefore, the exit stack starts four words below
the initial stack pointer.
ISP-8 - Status register = 2700
ISP-6 - Program Counter = 0000000a
ISP-2 - Vector Offset = 007C
The monitor is always exited using the FOUR WORD STACK frame, and the
monitor always uses 07C as the vector offset. When running a program from the
monitor after entering from reset, the powerup status word of 2700 is used.
Therefore, the only difference you will see in this stack frame will be because of
different initial program counters.
The procedure for setting the initial stack pointer and initial program counter can be
automated by using the initial vectors configuration question to define these values.
cf rv=<initial ISP>,<target program starting address>
Once this configuration has been set up, the following reset sequence may be useful
on systems that remap memory to provide reset vectors.
rst -m
r
Breaking into the foreground monitor
The next thing to try with the foreground monitor is to see if you can break into it
from your target program. The emulator uses a nonmaskable interrupt (interrupt 7)
to break into the monitor. The interrupt is generated in such a way as to not
interfere with any interrupts pending in your target system. The resulting interrupt
acknowledge cycle is not shown to the target system. The associated stacking is in
foreground memory at the location determined by the interrupt stack pointer. If the
target system program is running in Master mode, there will also be stacking on the
master stack.
A vector fetch occurs sometime during or after stacking. The emulator provides the
data for this vector fetch to correctly run the foreground monitor. While the
emulator is transitioning into the foreground monitor, interrupts are temporarily
blocked. Once in the monitor the interrupt mask level is lowered to the greater of
the "monint" configuration setting or the target program mask level.
Chapter 18: Connecting the Emulator to a Target System
Installing Emulator Features
658
Содержание 64783A
Страница 1: ...User s Guide for the Graphical User Interface MC68040 EC040 LC040 Emulator Analyzer HP 64783A B ...
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Страница 31: ...Part 1 Quick Start Guide 1 ...
Страница 33: ...1 Getting Started 3 ...
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Страница 71: ...2 Solving Quick Start Problems Solutions to problems you might face during the Getting Started procedures 41 ...
Страница 75: ...Part 2 Using The Emulator 45 ...
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Страница 141: ...4 Using the Emulator How to control the processor and view system resources 111 ...
Страница 227: ...5 Using the Emulation Bus Analyzer How to record program execution in real time 197 ...
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Страница 311: ...7 Making Software Performance Measurements How to make software performance measurements on your programs 281 ...
Страница 331: ...8 Configuring the Emulator 301 ...
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Страница 383: ...9 Solving Problems What to do when the emulator doesn t behave as expected 353 ...
Страница 397: ...Part 3 Reference 367 ...
Страница 399: ...10 Using Memory Management Understanding logical and physical emulation and analysis 369 ...
Страница 429: ...11 Emulator Commands The command syntax reference for the emulator softkey interface 399 ...
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Страница 451: ...display Chapter 11 Emulator Commands display 421 ...
Страница 457: ...DISPLAY MEMORY Chapter 11 Emulator Commands DISPLAY MEMORY 427 ...
Страница 461: ...DISPLAY MMU Chapter 11 Emulator Commands DISPLAY MMU 431 ...
Страница 464: ...DISPLAY TRACE Chapter 11 Emulator Commands DISPLAY TRACE 434 ...
Страница 470: ...Examples end end locked end release_system See Also emul700 emulator_name help end Chapter 11 Emulator Commands end 440 ...
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Страница 583: ...13 Setting X Resources 553 ...
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Страница 607: ...15 Microtec Language Tools Used With MC68040 Emulators Using the emulator analyzer with Microtec language tools 577 ...
Страница 613: ...16 Specifications and Characteristics 583 ...
Страница 627: ...Part 4 Concept Guide 597 ...
Страница 629: ...17 X Resources and the Graphical User Interface 599 ...
Страница 639: ...Part 5 Installation and Service Guide 609 ...
Страница 645: ...Chapter 18 Connecting the Emulator to a Target System Plugging The Emulator Into A Target System 615 ...
Страница 697: ...19 Installation and Service 667 ...
Страница 746: ...Chapter 19 Installation and Service Verifying the Installation 716 ...
Страница 755: ...20 Installing Updating Emulator Firmware 725 ...
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