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What (who) is Delayed control-transfer - definition

DATA STRUCTURE USED FOR FILE ACCESS IN CP/M, MS-DOS AND COMPATIBLE OPERATING SYSTEMS

File control block; Disk Transfer Area

delayed control-transfer

<SPARC, programming> A technique used on the SPARC to reduce the effect of pipeline breaks by executing the instruction after a branch instruction (the "delay instruction" in the "delay slot"). If there is no useful instruction which can be placed in the delay slot then the "annul bit" on the control transfer instruction can be set, preventing execution of the delay instruction (unless the control transfer is conditional and is taken). Annulled branches are indicated in SPARC assembler language by appending ",A" to the operation code. For example, LOOP: ... CMP %L0,10 BLE,A LOOP ADD %L2, %L3, #L4 If the delay instruction is also a control transfer instruction then it gets more complicated. Both control transfer instructions are executed (but not the following instruction) and, assuming they are both taken, control is transferred briefly to the destination of the first and then immediately to the destination of the second. (2001-06-26)

Delayed milestone

SYMPTOM

Delayed milestones; Growth retardation

Delayed milestone, also called developmental delays, is used to describe the condition where a child does not reach one of these stages at the expected age. However, in most cases, a wide variety of ages can be considered normal, and not a cause for medical concern.

https://en.wikipedia.org/wiki/Delayed_milestone

Delayed sleep phase disorder

CHRONIC MISMATCH BETWEEN A PERSON'S NORMAL DAILY RHYTHM, COMPARED TO OTHER PEOPLE AND SOCIETAL NORMS

Delayed Sleep Phase Syndrome; Delayed sleep phase; Delayed Circadian Rhythm Disorder; DSPD; Night owl insomnia; Delayed sleep-phase syndrome; Delayed sleep phase syndrome; Delayed sleep; Delayed sleep disorder; Social jet lag; Social jetlag; Delayed sleep-wake phase disorder; Delayed sleep–wake phase disorder; Delayed phase sleep disorder; Delayed Sleep Phase Disorder

Delayed sleep phase disorder (DSPD), more often known as delayed sleep phase syndrome and also as delayed sleep–wake phase disorder, is a delaying of a person's circadian rhythm (biological clock) compared to those of societal norms. The disorder affects the timing of biological rhythms including sleep, peak period of alertness, core body temperature, and hormonal cycles.

https://en.wikipedia.org/wiki/Delayed_sleep_phase_disorder

Wikipedia

File Control Block

A File Control Block (FCB) is a file system structure in which the state of an open file is maintained. A FCB is managed by the operating system, but it resides in the memory of the program that uses the file, not in operating system memory. This allows a process to have as many files open at one time as it wants, provided it can spare enough memory for an FCB per file.

The FCB originates from CP/M and is also present in most variants of DOS, though only as a backwards compatibility measure in MS-DOS versions 2.0 and later. A full FCB is 36 bytes long; in early versions of CP/M, it was 33 bytes. This fixed size, which could not be increased without breaking application compatibility, led to the FCB's eventual demise as the standard method of accessing files.

The meanings of several of the fields in the FCB differ between CP/M and DOS, and also depending on what operation is being performed. The following fields have consistent meanings:

The 20-byte-long field starting at offset 0x0C contained fields which (among others) provided further information about the file:

Further values were used by newer versions of DOS until new information could no longer fit in these 20 bytes. Some preceding "negative offset" bytes were squeezed from reserved spaces in CP/M Zero Page and DOS Program Segment Prefix for storing file attributes.

https://en.wikipedia.org/wiki/File Control Block