LF2407A Instruction Set
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LF2407A Instruction Set

 
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FlyBoy
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Posted: Thu Dec 30, 2004 11:25 pm    Post subject: LF2407A Instruction Set Reply with quote

I was reading TMS320LF2407A instruction set (SPRU160C.pdf from Texas
Instruments) and I'm a little confused. Instructions such as BLEZ, LACK,
ADDH, SUBH couldn't be found there, where or how can I know the meaning of
these instructions?

Thanks in advance
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Tim Wescott
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Posted: Sat Jan 01, 2005 4:14 am    Post subject: Re: LF2407A Instruction Set Reply with quote

FlyBoy wrote:

Quote:
I was reading TMS320LF2407A instruction set (SPRU160C.pdf from Texas
Instruments) and I'm a little confused. Instructions such as BLEZ, LACK,
ADDH, SUBH couldn't be found there, where or how can I know the meaning of
these instructions?

Thanks in advance


I'm not familiar with the '2407 instruction set, so I'm just guessing,

but some processors with wide instruction words implement "pseudo
instructions" in the assembler, where a separate mnemonic is used for a
non-intuitive use of a "real" instruction -- could this be the case here?

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com
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Korenje
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Posted: Mon Jan 03, 2005 7:58 am    Post subject: Re: LF2407A Instruction Set Reply with quote

BLEZ = BCND label,LT
LACK = LACC #k ; where #k is within 8 bit range (signed)
ADDH = ADD x,16
SUBH = SUB x,16

Mitja
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FlyBoy
Guest





Posted: Tue Jan 04, 2005 12:00 am    Post subject: Re: LF2407A Instruction Set Reply with quote

Thank you, could you tell me what is the source of the information that you
gave me?

Best regads.
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