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In the original S/360 and S/370 architectures, each processor had its own set of I/O channels and addressed I/O devices with a 12-bit cuu address, containing a 4-bit channel number and an 8-bit unit (device) number to be sent on the channel bus in order to select the device; the operating system had to be configured to reflect the processor and cuu address for each device.
System status, or system help reply. 212: Directory status. 213: File status. 214: Help message. Explains how to use the server or the meaning of a particular non-standard command. This reply is useful only to the human user. 215: NAME system type. Where NAME is an official system name from the registry kept by IANA. 220: Service ready for new ...
Return the size of a file. SMNT RFC 959 Mount file structure. SPSV FTP Extension Allowing IP Forwarding (NATs) Use single port passive mode (only one TCP port number for both control connections and passive-mode data connections) STAT RFC 959 Returns information on the server status, including the status of the current connection STOR RFC 959
The System/34 could either swap out entire programs, or individual segments of a program in order to free up memory for other programs to run. One of the machine's most distinctive features was an off-line storage mechanism that utilized " magazines "—boxes of 8-inch floppies that the machine could load and eject in a nonsequential fashion.
IEFBR14 was created because while DD statements can create or delete files easily, they cannot do so without a program to be run due to a certain peculiarity of the Job Management system, which always requires that the Initiator actually execute a program, even if that program is effectively a null statement. [2]
An IBM System Z10 mainframe computer on which z/OS can run. z/OS is a 64-bit operating system for IBM z/Architecture mainframes, introduced by IBM in October 2000. [2] It derives from and is the successor to OS/390, which in turn was preceded by a string of MVS versions.
TOS, as per the "Tape" in the name, required a tape drive. It shared most of the code base [ 4 ] and some manuals [ 5 ] [ 6 ] with IBM's DOS/360. TOS went through 14 releases, and was discontinued [ 7 ] [ failed verification ] when disks such as the IBM 2311 and IBM 2314 became more affordable at the time of System/360, [ 8 ] [ failed ...
Ralf Brown's Interrupt List (aka RBIL, x86 Interrupt List, MS-DOS Interrupt List or INTER) is a comprehensive list of interrupts, calls, hooks, interfaces, data structures, CMOS settings, memory and port addresses, as well as processor opcodes for x86 machines from the 1981 IBM PC up to 2000 (including many clones), [1] [2] [nb 1] most of it still applying to IBM PC compatibles today.