Tag Archive

Software Archiving

One of my main fears with my collection is loosing software over time as disks slowly decay. DEC media has proven amazingly resilient with many of my disks well over 30 years old. The reality is though that they won’t last forever and so I’ve decided now is the time to start a program of… »

HOWTO: Create a MSCP MAP in RT-11

RT-11 is restricted to each devices is limited to 32MB of usable space. This is due to the filesystem using a 16-bit field to represent blocks, giving a maximum of 65535 x 512 byte blocks.
For larger MSCP disks, such as RD53, RD54, RA series and third party disks, all is not lost. Within RT-11 a… »

HOWTO: Create Logical Disks under RT-11

Logical disks are a convenient way of getting round the lack of a directory structure in RT-11. A logical disk is a file which can be mounted as a virtual storage device.
To make a logical disk:

Create an empty file to act as your logical disk:
CREATE [filename]/ALLOCATE:[number of blocks]
For example:
CREATE GAMES.DSK/ALLOCATE:500
Mount the file as a logic… »