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[/] [w11/] [tags/] [w11a_V0.6/] [doc/] [README.txt] - Diff between revs 6 and 8

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# $Id: README.txt 318 2010-07-23 18:28:40Z mueller $
# $Id: README.txt 341 2010-11-27 23:05:43Z mueller $
 
 
Release notes for w11a
Release notes for w11a
 
 
  Table of content:
  Table of content:
 
 
Line 46... Line 46...
   tools                        helper programs
   tools                        helper programs
   tools/bin                    - scripts and binaries
   tools/bin                    - scripts and binaries
 
 
3. Change Log -------------------------------------------------------------
3. Change Log -------------------------------------------------------------
 
 
- trunk (current development snapshot) -----------------------
- trunk (2010-11-28: svn rev 8(oc) 341(wfjm); untagged w11a_V0.51)
 
 
  indentical to w11a_V0.5
  - Changes
 
    - module renames:
 
      - in future 'box' is used for large autonomous blocks, therefore use
 
        the term unit for purely sequential logic modules:
 
          pdp11_abox -> pdp11_ounit
 
          pdp11_dbox -> pdp11_aunit
 
          pdp11_lbox -> pdp11_lunit
 
          pdp11_mbox -> pdp11_munit
 
 
 
    - signal renames:
 
      - renamed RRI_LAM -> RB_LAM in all ibus devices
 
      - renamed CLK     -> I_CLK50 in all top level nexys2 and s3board designs
 
 
 
    - migrate to ibus protocol verion 2
 
      - in ib_mreq use now aval,re,we,rmw instead of req,we,dip
 
      - basic ibus transaction now takes 2 cycles, one for address select, one
 
        for data exchange. This avoids too long logic paths in ibus sector.
 
 
 
  - New features
 
    - ibus
 
      - added ib_sres_or_mon to check for miss-behaving ibus devices
 
      - added ib_sel to encapsulate address select logic
 
    - nexys2 systems
 
      - now DCM derived system clock supported
 
      - sys_gen/w11a/nexys2
 
        - sys_w11a_n2 now runs with 58 MHz clksys
 
 
 
  - Bug fixes
 
    - rtl/vlib/Makefile.xflow: use default .opt files under rtl/vlib again.
 
 
- w11a_V0.5 (2010-07-23) -------------------------------------
- w11a_V0.5 (2010-07-23) -------------------------------------
 
 
  Initial release with
  Initial release with
  - w11a CPU core
  - w11a CPU core

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