+
+# Visual Technology Visual 1050 computer
+diskdef v1050
+ seclen 512
+ tracks 80
+ sectrk 10
+ blocksize 2048
+ maxdir 128
+ skew 0
+ boottrk 2
+ os 3
+end
+
+# Microbee 40 track 5.25" disks
+diskdef microbee40
+ seclen 512
+ tracks 80
+ sectrk 10
+ blocksize 2048
+ maxdir 128
+ skewtab 1,4,7,0,3,6,9,2,5,8
+ boottrk 2
+ os 2.2
+end
+
+diskdef dreamdisk40
+ seclen 512
+ tracks 80
+ sectrk 10
+ blocksize 2048
+ maxdir 128
+ skewtab 1,4,7,0,3,6,9,2,5,8
+ boottrk 2
+ os 2.2
+end
+
+diskdef dreamdisk80
+ seclen 512
+ tracks 160
+ sectrk 10
+ blocksize 2048
+ maxdir 256
+ skewtab 1,4,7,0,3,6,9,2,5,8
+ boottrk 2
+ os 2.2
+end
+
+diskdef rc759
+ seclen 1024
+ tracks 160
+ sectrk 8
+ blocksize 2048
+ maxdir 512
+ boottrk 4
+ os 3
+end