
TMS320F243, TMS320F241
DSP CONTROLLERS
SPRS064B – DECEMBER 1997 – REVISED FEBRUARY 1999
69
POST OFFICE BOX 1443 
 HOUSTON, TEXAS 77251–1443
instruction set summary (continued)
Table 21. TMS320x24x Instruction Set Summary (Continued)
’x24x
DESCRIPTION
WORDS/
CYCLES
OPCODE
MNEMONIC
MSB
LSB
SUBB
Subtract from accumulator with borrow
1/1
0110
0100
IADD
RESS
SUBC
Conditional subtract
1/1
0000
1010
IADD
RESS
SUBS
Subtract from low accumulator with sign extension suppressed
1/1
0110
0110
IADD
RESS
SUBT
Subtract from accumulator with shift specified by TREG
1/1
0110
0111
IADD
RESS
TBLR
Table read
1/3
1010
0110
IADD
RESS
TBLW
Table write
1/3
1010
0111
IADD
RESS
TRAP
Software interrupt
1/4
1011
1110
0101
0001
Exclusive-OR with accumulator
1/1
0110
1100
IADD
RESS
Exclusive OR immediate with accumulator with shift
Exclusive-OR immediate with accumulator with shift
2/2
1011
1111
1101
SHFT
XOR
16-Bit Constant
Exclusive OR immediate with accumulator with shift of 16
Exclusive-OR immediate with accumulator with shift of 16
2/2
1011
1110
1000
0011
16-Bit Constant
ZALR
Zero low accumulator and load high accumulator with rounding
1/1
0110
1000
IADD
RESS
development support
Texas Instruments offers an extensive line of development tools for the ’x24x generation of DSPs, including tools
to evaluate the performance of the processors, generate code, develop algorithm implementations, and fully
integrate and debug software and hardware modules.
The following products support development of ’x24x-based applications:
Software Development Tools:
Assembler/linker
Simulator
Optimizing ANSI C compiler
Application algorithms
C/Assembly debugger and code profiler
Hardware Development Tools:
Emulator XDS510 (supports ’x24x multiprocessor system debug)
The TMS320 DSP Development Support Reference Guide(literature number SPRU011) contains information
about development support products for all TMS320 family member devices, including documentation. Refer
to this document for further information about TMS320 documentation or any other TMS320 support products
from Texas Instruments. There is also an additional document, the TMS320 Third-Party Support Reference
Guide (literature number SPRU052), which contains information about TMS320-related products from other
companies in the industry. To receive copies of TMS320 literature, contact the Literature Response Center at
800/477-8924.
See Table 22 and Table 23 for complete listings of development support tools for the ’x24x. For information on
pricing and availability, contact the nearest TI field sales office or authorized distributor.