Re: Hardware emulation of 6509 using 6502?

From: Jim Brain <brain_at_jbrain.com>
Date: Thu, 28 Jun 2018 00:45:35 -0500
Message-ID: <08033baf-0a20-d64d-892c-2d045808210a@jbrain.com>
Update:

Test passes 5/8:

bank access simple: OK
bank access overflow: OK
bank access other: OK
bank execute: OK
read bank direct 1: OK
read bank direct 2: got FF, expected 0f
read bank indirect 1: f0, expected 00
read bank indirect 2: ff, expected 0f

Michal, what do I need to do to fix the remaining items?  It looks like 
read the read happens, it is filling the top bits with 1, but my assign 
statement specifically puts 0's there:

    if(oe_bank)
       data_6502_out = {4'b0000, data_bank};

Jim
Received on 2018-06-28 08:01:25

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