Quantcast
Channel: Processors
Viewing all articles
Browse latest Browse all 150813

Forum Post: RE: LDI32 PRU instruction

$
0
0

Thanks David - but I'm still not 100% clear about this LDI32 instruction.   The following is from the README.txt that came with the PRU_2.0.0B2.  It is under the Assembler section not tje Compiler section.  Is it similar to the .ST32 macro that was  defined in the original PASM headers?

===============================================================================
Assembler

-------------------------------------------------------------------------------
Instructions
-------------------------------------------------------------------------------
The syntax for instruction mnemonics is very similiar to the existing PASM
assembler. Exceptions are listed here:

1. MOV instruction
   MOV is only supported for register to register moves. The LDI instruction
   must be used to load a literal into a register.

2. LDI instruction
   LDI can only be used to load a 16-bit constant into a register. To load a
   32-bit constant, you must use the LDI32 instruction.

3. MVI instruction
   MVI is only supported on core revisions 2 and 3. The existing PASM assembler
   supports the instruction in a limited form for v1 using pseudo operations.

4. ZERO instruction
   ZERO is only supported on v2 and v3 cores. For v1, the user should use
   LDI r0, 0.

5. LFC, SFC, and SCAN
   These instructions are not supported. If support is needed we can add them.

6. Operands with a '&' prefix
   The existing PASM assembler accepts operands with or without the &
   symbol: LBBO &r0 or LBBO r0. The assembler in this release requires the
   & for these operands.


Viewing all articles
Browse latest Browse all 150813

Latest Images

Trending Articles



Latest Images

<script src="https://jsc.adskeeper.com/r/s/rssing.com.1596347.js" async> </script>