why was my code footprint not be reduced?

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originally posted by nios_ii@Apr 7 2006, 08:59 AM

hello,

i wrote a code based on the count_binary about pio.

in sopc builder, i customed the niosii processor as following:

nios/e

on chip memory: 4k (if is it small?)

uart:default settings

pio_7seg:8bit output

pio_button:2bit input,generate irq,ring edge

but the builting project failed!

the error message:

region onchip_memory_0 is full

region needs to be 1228 bytes larger.

my question is:

if the 4k memory is not enough?

btw:

i am confused about the standard c data type and hal data type.

what's the difference between them?

i read the sw manual,but failed to get it out. any one could give me a example to explain it?

thanks!

http://forum.niosforum.com/work2/style_emoticons/<#emo_dir#>/unsure.gif

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Read the section on reducing code footprint in the Nios II Software Developers handbook. It&#39;s in the documents directory it&#39;s somehting like niisw_5v2.pdf.

As for the HAL data types versus the C data types. C data types do not have guaranteed widths they change from compiler to compiler architecture to architecture. The HAL types give you a type of the width you choose on Nios