XEROX 820 Name Format Description 5SYS-II SSDD 820-II 5.25" system disk s/n DC0003121 5DSYS-II DSDD 820-II 5.25" system disk s/n DC1001697 5WP-II SSDD 820-II 5.25" word processor dsk s/n DC0003121 1800-P SSDD 1800 Portable 5.25" system disk 8202CPM5 SSDD 820-II 5.25" system disk s/n DC0003121 8202DIA5 SSDD 820-II 5.25" diagnostic exerciser 8202PRG5 SSSD 820-II 5.25" programs No System 8202SIS5 SSDD 820-II 5.25" system disk s/n DC0003121 8202SYS8 SSDD8 820-II 8" system disk s/n DC1001697 8202TRN5 SSSD 820-II 5.25" WP training disk No System 8202TRN8 SSSD8 820-II 8" WP training disk No System 820DIA5 SSSD 820 5.25" diagnostics s/n BD0053000 820DIA8 SSSD8 820 8" diagnostics s/n BD0050266 820SSSD SSSD8 820 8" system disk s/n BS0054300 820SYS5 SSSD 820 5.25" system disk s/n BW0061446 820SYS8 SSSD8 820 8" system disk s/n BS0050484 820SYS8S SSSD8 820 8" system disk s/n BS0050484 820WP5 SSSD 820 5.25" word procesor disk s/n BW0061446 820WP8 SSSD8 820 8" word processor disk s/n BW0050522 16-8DEV5 DSDD 16/8 5.25" CP/M-80/86 Development disk 16-8SYS5 DSDD 16/8 5.25" CP/M-80/86 System disk 16-8DOS5 DSDD 16/8 5.25" MS-DOS 2.0 Operating system 16-8UTL5 DSDD 16/8 5.25" MS-DOS 2.0 Utilities 16-8DEV8 SSDD8 16/8 8" CP/M-80/86 Development disk 16-8SYS8 SSDD8 16/8 8" CP/M-80/86 System disk 16-8DOS8 SSDD8 16/8 8" MS-DOS 2.0 Operating system 16-8UTL8 SSDD8 16/8 8" MS-DOS 2.0 Utilities NOTE: 5.25" 16/8 disks require Disk Expansion Module (DEM) EMIIDIA5 DSDD 16/8 5.25" EM-II Diagnostics SSSD BAD SSSD 820 5.25" system disk s/n BS0054300 8202SYS5 BAD SSSD 820-II 5.25" system disk s/n BS0067421 16-8DOS ZIP 16/8 MS-DOS 2.0 files 16-8UTL ZIP 16/8 MS-DOS 2.0 utilities 820-DIAG ZIP 820 diagnostics 820-PRGM ZIP 820 programs 820-SYS ZIP 820 system programs 820-TRNG ZIP 820 training files 820-UTIL ZIP 820 utilities 820-WP ZIP 820 word processor programs 8202DIAG ZIP 820-II diagnostics