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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
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21 years ago

Yes this was discussed in another thread. To solve this problem add an extra bit to the address width (called Address_Width) in the class.ptf file for that component. In Quartus 4.1 an extra bit was added to the address (one more then there should have been) and with Quartus 4.2 this is fixed (so if it was connected to that extra bit then it will not be connected after the upgrade). So when you make this change you are compensating by adding an extra bit (to get back to where you started with Quartus 4.1)