Difference between revisions of "KE11-B Extended Arithmetic Element"

From Computer History Wiki
Jump to: navigation, search
(All I know! :-))
 
m (rm bloat)
 
(7 intermediate revisions by the same user not shown)
Line 1: Line 1:
−
The '''KE11-B Extended Arithmetic Element''' is a program-compatible re-implementation, on a single [[DEC card form factor|hex]] board, the M7840, of the [[KE11-A Extended Arithmetic Element]], an autonomous [[UNIBUS]] [[peripheral]] which can perform a variety of arithmetic or logical operations:
+
The '''KE11-B Extended Arithmetic Element''' is a [[program compatible]] re-implementation (on a single [[DEC card form factor|hex]] board - the M7840) of the [[KE11-A Extended Arithmetic Element]], an [[Extended Arithmetic Element]] built as an autonomous [[UNIBUS]] [[peripheral]], which can perform a variety of arithmetic or logical operations:
  
 
* multiplication
 
* multiplication
Line 8: Line 8:
 
** [[normalization]]
 
** [[normalization]]
  
−
The original KE11-A was produced for use with the [[PDP-11/20]], whose [[KA11 CPU]] did not have multply, divide, or multi-bit shift operations. As a UNIBUS peripheral, not integrated into the [[Central Processing Unit|CPU]], it was also usable with other models, e.g. the [[PDP-11/05]] and [[PDP-11/04]], which likewise did not implement multiplication in [[hardware]], etc. The KE11-B can be used with these later models.
+
(The last is used for carrying out [[floating point]] computations in [[software]].)
  
−
{{PDP-11s}}
+
The original KE11-A was produced for use with the [[PDP-11/20]], whose [[KA11 CPU]] did not have multply, divide, or multi-bit shift operations. As a UNIBUS peripheral, not integrated into the [[Central Processing Unit|CPU]], it was also usable with other models, e.g. the [[PDP-11/05]] and [[PDP-11/04]], which likewise did not implement multiplication in [[hardware]], etc. The KE11-B can likewise be used with these later models.
 +
 
 +
{{semi-stub}}
 +
 
 +
==Further reading==
 +
 
 +
* ''KE11-B User Manual'' (EK-KE11B-OP) - not online
 +
* ''KE11-B Maintenance Manual'' (EK-KE11B-MM) - not online, available in fiche
 +
 
 +
==External links==
 +
 
 +
* [http://wwcm.synology.me/pdf/KE11-B%20Arithmetic%20Unit%20Engineering%20Drawings.pdf KE11-B Engineering Drawings]
  
 
[[Category: PDP-11s]]
 
[[Category: PDP-11s]]
 +
[[Category: UNIBUS]]

Latest revision as of 20:17, 2 July 2023

The KE11-B Extended Arithmetic Element is a program compatible re-implementation (on a single hex board - the M7840) of the KE11-A Extended Arithmetic Element, an Extended Arithmetic Element built as an autonomous UNIBUS peripheral, which can perform a variety of arithmetic or logical operations:

  • multiplication
  • division
  • multi-bit shifts

(The last is used for carrying out floating point computations in software.)

The original KE11-A was produced for use with the PDP-11/20, whose KA11 CPU did not have multply, divide, or multi-bit shift operations. As a UNIBUS peripheral, not integrated into the CPU, it was also usable with other models, e.g. the PDP-11/05 and PDP-11/04, which likewise did not implement multiplication in hardware, etc. The KE11-B can likewise be used with these later models.

Further reading

  • KE11-B User Manual (EK-KE11B-OP) - not online
  • KE11-B Maintenance Manual (EK-KE11B-MM) - not online, available in fiche

External links

Retrieved from "https://gunkies.org/w/index.php?title=KE11-B_Extended_Arithmetic_Element&oldid=30260"