Thread: Re: [Flashforth-devel] building FF5 for dsPIC33EP256GP502

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<div style="font-size:10pt;">I guess you need to check how the interrupts and the flash memory interface works on the 33e series.&nbsp;I cannot remember how much ram FF can address. At least 32 kbyte.&nbsp;Was it so that the e series has eeprom?If so, it could be used for the dictionary pointers like on the 30f.&nbsp;<div><signature_tag>Sent from my LG Mobile</signature_tag></div>&nbsp;&nbsp;------ Original message------ From:&nbsp;Peter Jacobs<pe...@me...>Date:&nbsp;Thu, 10/07/2014 17:45To:&nbsp;flashforth-devel;Subject:[Flashforth-devel] building FF5 for dsPIC33EP256GP502&nbsp;<pre>Mike,
 &nbsp;&nbsp;&nbsp;I was attempting to build the 16-bit FF for a dsPIC33EP256GP502-I/SP 
because I was keen to have more SRAM than the dsPIC33FJ128GP802 
offered. &nbsp;I think that I've got the correct header files included by 
adding an entry to ff30.inc but have just copied the p33f_config.inc as 
a starting point for a new p33e_config file. Presently I have the 
following errors from the assembler.

make -f nbproject/Makefile-default.mk SUBPROJECTS= .build-conf
make[1]: Entering directory 
`/home/peterj/pic_work/flash-forth/ff5p0-dsPIC33EP-july-2014/FF5-for_dsPIC33EP.X'
make &nbsp;-f nbproject/Makefile-default.mk 
dist/default/production/FF5-for_dsPIC33EP.X.production.hex
make[2]: Entering directory 
'/home/peterj/pic_work/flash-forth/ff5p0-dsPIC33EP-july-2014/FF5-for_dsPIC33EP.X'
&quot;/opt/microchip/xc16/v1.21/bin/xc16-gcc&quot; &nbsp;&nbsp;../src/ff-pic24-30-33.s -o 
build/default/production/_ext/1360937237/ff-pic24-30-33.o &nbsp;-c 
-mcpu=33EP256GP502 &nbsp;-omf=elf -I&quot;../src&quot; 
-Wa,-MD,&quot;build/default/production/_ext/1360937237/ff-pic24-30-33.o.d&quot;,--defsym=__MPLAB_BUILD=1,-g,--no-relax
.../src/ff-pic24-30-33.s: Assembler messages:
.../src/ff-pic24-30-33.s:468: Error: Invalid operands specified ('btss 
INTCON2,#ALTIVT').
.../src/ff-pic24-30-33.s:468: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Check operand #2. Operand must be 
between 0 and 15, inclusive.
.../src/ff-pic24-30-33.s:1126: Error: Invalid operands specified ('bclr 
INTCON2,#ALTIVT').
.../src/ff-pic24-30-33.s:1126: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Check operand #2. Operand must be 
between 0 and 15, inclusive.
.../src/ff-pic24-30-33.s:1136: Error: Invalid operands specified ('bset 
INTCON2,#ALTIVT').
.../src/ff-pic24-30-33.s:1136: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Check operand #2. Operand must be 
between 0 and 15, inclusive.
make[2]: *** [build/default/production/_ext/1360937237/ff-pic24-30-33.o] 
Error 255
make[1]: *** [.build-conf] Error 2
make: *** [.build-impl] Error 2
nbproject/Makefile-default.mk:97: recipe for target 
'build/default/production/_ext/1360937237/ff-pic24-30-33.o' failed
make[2]: Leaving directory 
'/home/peterj/pic_work/flash-forth/ff5p0-dsPIC33EP-july-2014/FF5-for_dsPIC33EP.X'
make[1]: Leaving directory 
`/home/peterj/pic_work/flash-forth/ff5p0-dsPIC33EP-july-2014/FF5-for_dsPIC33EP.X'

BUILD FAILED (exit value 2, total time: 158ms)

It seems that the interrupt vector tables are a bit different. &nbsp;Any 
suggestions?

Also, this MCU has more static RAM than will fit within the first 32k 
address range.
I guess that I need to set appropriate boundaries.

Of course, these might also be just the start of many changes that might 
be needed. &nbsp;Could you hazard a guess as to how many? &nbsp;I will accept an 
answer of &quot;too many&quot;, but I thought that I would just try my luck and 
see if it was easy to get FF running on this chip.

Regards,
Peter Jacobs

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