Difference between revisions of "KTF11-A memory management chip"

From Computer History Wiki
Jump to: navigation, search
m (Fix erroneous name)
(Correct supposition on float registers in MMU chip)
Line 1: Line 1:
 
The '''KTF11-A memory management chip''' is an optional chip for [[KDF11 CPUs|PDP-11 CPUs]] which use the [[F-11 chip set]]. It implemented the standard [[PDP-11 Memory Management]].
 
The '''KTF11-A memory management chip''' is an optional chip for [[KDF11 CPUs|PDP-11 CPUs]] which use the [[F-11 chip set]]. It implemented the standard [[PDP-11 Memory Management]].
  
The [[KEF11-A]] [[floating point]] chip requires the KTF11-A, since the floating point registers are actually in the KTF11-A (probably because the KEF11-A is microcode, and there aren't enough pins for both the data bus, and the microcode bus).
+
The [[KEF11-A floating point]] chip option requires the KTF11-A, since the [[floating point]] [[register]]s are actually in the KTF11-A (the reason is unknown; the KEF11-A is [[microcode]], but there are enough pins for both the [[data bus]], and the microcode bus).
  
 
The KTF11-A chip was the DC304, DEC part # 21-15542-0n (where n is a digit giving the revision; 0 and 1 have been seen).
 
The KTF11-A chip was the DC304, DEC part # 21-15542-0n (where n is a digit giving the revision; 0 and 1 have been seen).
  
 
{{PDP-11}}
 
{{PDP-11}}
 +
 +
[[Category: PDP-11 Processors]]

Revision as of 16:12, 1 November 2018

The KTF11-A memory management chip is an optional chip for PDP-11 CPUs which use the F-11 chip set. It implemented the standard PDP-11 Memory Management.

The KEF11-A floating point chip option requires the KTF11-A, since the floating point registers are actually in the KTF11-A (the reason is unknown; the KEF11-A is microcode, but there are enough pins for both the data bus, and the microcode bus).

The KTF11-A chip was the DC304, DEC part # 21-15542-0n (where n is a digit giving the revision; 0 and 1 have been seen).