Post by thread:[PIC] (s)spim compatible with microchip pic32 ?

SPIM is a MIPS32 processor architecture. PIC32 is based on a MIPS M4K core. According to www.mips.com/products/processors/hard-ip-cores/m4k-hard-ip-cores/ : "The MIPS32(R) M4K(R) Hard IP Cores are technology-specificimplementations of the synthesizable 32-bit MIPS32 M4K core." Therefore the PIC32 is a MIPS32 processor, and thus uses the same machine instruction set (ie, instruction coding) as the MIPS32 processor. But it should be relatively easy to determine - make an assembly program that uses most of the instructions and compile it with PIC32 and with another available MIPS assembler and compare the output. -Adam On Tue, Nov 11, 2008 at 11:49 AM, Peter <spam_OUTplpeter2006TakeThisOuTyahoo.com> wrote: > Is spim compatible with pic32 assembly at the encoding level ? > > thanks, > Peter > > -

On Wed, Nov 12, 2008 at 12:49 AM, Peter <.....plpeter2006KILLspam@spam@yahoo.com> wrote: > Is spim compatible with pic32 assembly at the encoding level ? I believe it is not compatible with PIC32. It is for the old MIPS R2000 instruction sets. PIC32MX is using the newer M4k core. Xiaofan

M. Adam Davis <stienman <at> gmail.com> writes: > But it should be relatively easy to determine - make an assembly > program that uses most of the instructions and compile it with PIC32 > and with another available MIPS assembler and compare the output. This is not necessarily a compatible test but I will try it. spim implements a number of strange peripherals and a fpu among other things. I think that there will be "some" differences. I intend to use spim for quick code prototyping eventually. Peter

On Wed, Nov 12, 2008 at 11:43 AM, Xiaofan Chen <xiaofancKILLspamgmail.com> wrote: > On Wed, Nov 12, 2008 at 12:49 AM, Peter <.....plpeter2006KILLspam.....yahoo.com> wrote: >> Is spim compatible with pic32 assembly at the encoding level ? > > I believe it is not compatible with PIC32. It is for the old MIPS R2000 > instruction sets. PIC32MX is using the newer M4k core. > My bad. I checked the new spim and it seems to support MIPS32 now. http://pages.cs.wisc.edu/~larus/spim.html Still PIC32MX supports MIPS16e instruction set. And it is not mentioned in SPIM website. Xiaofan