DFS090          DFS                           0.90                (C)l
DFS090b         DFS                           0.90                (C)l
DFS098          DFS                           0.98                (C)l
DFS09H          DFS                           0.9H                (C)
DFS100          DFS,NET                       1.00                (C)ROFF
DFS120          DFS,NET                       1.20                (C)ROFF
DFS121          DFS,NET                       1.21                (C)ROFF
DFS122          DFS,NET                       1.22                (C)ROFF
DFS210          DFS                           2.10                (C)1985 Acorn
DFS210Mse       DFS                           2.10                (C)1985 Acorn
                Mouse                         1.00 (12 Mar 2006)  (C)J.G.Harston
DFS220a         DFS                           2.20                (C)1985 Acorn
DFS220b         DFS                           2.20                (C)1985 Acorn
DFS222          DFS                           2.22                (C)1985 Acorn
DFS223          DFS                           2.23                (C)1985 Acorn
DFS224          DFS                           2.24                (C)1985 Acorn
DFS224+         DFS                           2.24                (C)1985 Acorn
DFS224+Mse      DFS                           2.24                (C)1985 Acorn
                Mouse                         1.00 (12 Mar 2006)  (C)J.G.Harston
DFS224MsRC      DFS                           2.24                (C)1985 Acorn
                Mouse                         1.00 (12 Mar 2006)  (C)J.G.Harston
                RAMCount                      0.02 (15 Oct 2014)  (C)J.G.Harston
DFS224Only      DFS                           2.24                (C)1985 Acorn
DFS225          DFS                           2.25                (C)1985 Acorn
DFS226          DFS                           2.26                (C)1985 Acorn
DFS228          DFS                           2.28                (C)1985 Acorn
DFS229          DFS                           2.29                (C)1985 Acorn
DFS229+         DFS                           2.29                (C)1985 Acorn
DFS229+Mse      DFS                           2.29                (C)1985 Acorn
DFS229Only      DFS                           2.29                (C)1985 Acorn
DFS242          DFS                           2.42                (C)1985 Acorn
DFS245          DFS                           2.45                (C)1985 Acorn
DFS245r1        DFS                           2.45                (C)1989 Acorn
header          header                                            
versions        versions