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Altera_Forum
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21 years ago

QUARTUS 4.2 NIOS 1.1 UPDATE PROBLEM

After update to Quartus 4.2 and Nios 1.1 I have a problem with an 8-Bit Slave (user logic) the adress lines are connected as follows CPU A 9 8 7 6 5 4 3 2 1 ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

Is the setting, which I made in SOPC Builder, wrong ?

I only can say that I connected A9..A2 of the address bus(A22..A0) to A7..A0 of

the 8 bit slave.

The size of the address bus did not change with respect to Quartus 4.1

(same problem as niosIIuser)

A <---> base

B <---> base + 4 (next word)

C <---> base + 8 (next word)

this should be done by (A=0,B=1,C=2)

IORD(base,A) <--> base

IORD(base,http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/cool.gif <--> base+4

IORD(base,C) <--> base+8