80x25font      80x25font
MOSA00         MOSA00
MOSA00/zip     MOSA00.zip
notes          notes                                             
SYS5-1F/zip     Source for System 5 DOS and Kernel Issue 1F/1G
SYS5-40/zip     System BBC BASIC + SYSDOS40v1G
SYSDOS40G      System Kernel v1G, 40-column text, 8271 DOS (TOSDOS40-1G, TOSDOS-S3-1G)
SYSDOS80G      System Kernel v1G, 80-column text, 8271 DOS (TOSDOS80-1G, TANDOS80-1G, TANDOS-1G, SHUDOS-1G, JOSDOS-1G)
SYSDOS40       System Kernel v1F, 40-column text, 8271 DOS (TOSDOS40, TOSDOS-S3)
SYSDOS80       System Kernel v1F, 80-column text, 8271 DOS (TOSDOS80, TANDOS80, TANDOS, SHUDOS, JOSDOS)
SYSNOS80       System Kernel v1F, 80-column text, 8271 DOS, Econet 3.40
Originals      Original ROM dumps

SYS17D40       System Kernel v2F, 40-column test, 1770 DOS, developed by ....
SYS17D80       System Kernel v2F, 80-column test, 1770 DOS, developed by ....
SYS17D40G      System Kernel v2G, 40-column test, 1770 DOS, developed by ....
SYS17D80G      System Kernel v2G, 80-column test, 1770 DOS, developed by ....