When Unix V6 is running, at first, the GUI issues a sync command to Unix, forcing the OS to flush any delayed I/O to disk. When Unix V6 is not running (in the boot screen), the RK05 disk image is accessed and manipulated directly. The emulator can synchronize files both before Unix V6 is loaded and after. if the files were modified locally and were synced to Unix V6 more than a minute ago, they are uploaded: copied from local directory to Unix V6.if the files were modified inside Unix V6, they are also downloaded.if the files were never synchronized before, they are downloaded: copied from Unix V6 into local directory.When an unsynchronized pair of files is observed, the following actions are taken: When a file or subdirectory exists in one filesystem, but not in the other, it is simply created where it is absent. To perform syncing, the emulator compares local directory with a Unix V6 directory finding pairs of files with the same name. Any synced files within Unix V6 filesystem will appear as having modification year of 1983. Files are considered in sync if their modification time (24 bits of it) match within 1 minute. Higher 8 bits are used to mark that files were synced. For this purpose, modification time of files is used to track changes between synchronized directories.īecause Unix V6 does not support modern dates, lower 24 bits of modtime in Unix V6 filesystem are used for current local time. The syncing feature allows you to synchronize a folder between your working OS and the emulated Unix V6.
#Pdp 11 emulator mac pdf
Unix V6 sources alone measure beyond that capacity.Ĭomplete Unix V6 manual in somewhat searchable PDF can be found It is unsurprising, knowing that RK05 disk could only contain around 2.5 MB of data, while the The disk image included into this repository misses on most some commands were backported and included into the image (see tools directory).syncing a directory between Unix V6 and your machine.resource friendlier WAIT instruction (not overheating the physical CPU).pasting text into the terminal from clipboard is allowed (making it much more usable).If you want to export the disk image for whatever reason, don't forget to execute the sync command first (it flushes the delayed I/O to disk).Ĭompared to the original JavaScript code, this implementation has the following benefits:.Instead of Ctrl+C, press Backspace button if you want to halt execution of a program.
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Issuing command stty -lcase is needed to enable lowercase output.
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