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66 www.xilinx.com PicoBlaze 8-bit Embedded Microcontroller
UG129 (v1.1.2) June 24, 2008
Chapter 9: PicoBlaze Development Tools
R
Open a DOS box and navigate to the working directory. To assemble the PicoBlaze
program, type:
kcpsm3 <filename>[.psm]
Assembly Errors
The assembler halts as soon as an error is detected. A short message indicates the reason
for any error. The assembler also displays the line that it was analyzing when it detected
the problem. Fix each reported problem in turn and re-execute the assembler.
Since the execution of the assembler is very fast, it is unlikely that you will be able to ‘see’
it making progress, and the display will appear to be immediate. To review everything that
the assembler has written to the screen, the DOS output can be redirected to a text file
using:
kcpsm3 <filename>[.psm] > screen_dump.txt
Input and Output Files
The KCPSM3 assembler reads four input files and creates 15 output files as shown in
Figure 9-1. The KCPSM3 assembler reads the PicoBlaze source program,
<filename>.psm, and three template files that instantiate and initialize a block RAM in
various design flows, ROM_form.*.
All five assembler passes are recorded in the pass*.dat output files. Should an error
occur during assembly, these files may contain additional details on the error.
If the source program is free of errors, the KCPSM3 assembler generates an object code
output, formatted for a variety of design flows, based on the initial template files. These
output files generate the code ROM, instantiated as a block RAM, and properly initialized
with the PicoBlaze object code. The assembler also generates equivalent raw decimal and
hexadecimal output files for other utilities.
Figure 9-1: KCPSM3 Assembler Files
<filename>.vhd
<filename>.v
<filename>.coe
<filename>.m
<filename>.hex
<filename>.dec
PicoBlaze source program
KCPSM3.EXE
Assembled PicoBlaze
code, formatted to initialize
a block RAM for a variety
of design flows
Assembled PicoBlaze
code, formatted for other
utilities
ROM_form.vhd
ROM_form.v
ROM_form.coe
Block RAM
initialization
templates for a
variety of design
flows
pass1.dat
pass2.dat
pass3.dat
pass4.dat
pass5.dat
Assembler intermediate
processing files (possibly
useful for debugging
assembly errors)
<filename>.log
constants.txt
labels.txt
<filename>.fmt
Assembler report files
Formatted version of input
source program
<filename>.psm
UG129_c10_01_052004