KB11-C CPU - Revision history

Jnc: /* External links */ +Category:DEC Documentation Errors

2022-10-24T19:03:59Z

‎External links: +Category:DEC Documentation Errors

Jnc: /* External links */ +docs at Bitsavers

2022-10-13T16:34:38Z

‎External links: +docs at Bitsavers

Larsbrinkhoff: Narrow down category.

2022-10-11T10:32:28Z

Narrow down category.

Jnc: Move text from -11/70 article

2018-05-13T22:08:05Z

Move text from -11/70 article

Jnc: Mention main difference between FP11-B/C

2018-05-13T01:15:45Z

Mention main difference between FP11-B/C

Jnc: A start

2018-05-13T01:12:27Z

A start

New page

The '''KB11-C''' [[Central Processing Unit|CPU]] is the later CPU for the [[PDP-11/70]]; it is basically the same as the earlier [[KB11-B CPU]], except that it uses the [[FP11-C Floating-Point Processor]] instead of the [[FP11-B Floating-Point Processor]]

==Boards==

The basic KB11-C consisted of fifteen [[DEC card form factor|hex]] boards, basically the same board set as the earlier KB11-B, except that two boards:

* M8133 ROM and ROM Control
* M8138 System Status Registers

were replaced with the:

* M8123 ROM and ROM Control
* M8138-YA System Status Registers

respectively.

'''''Note''''': ''The "PDP-11/70 Maintenance and Installation Manual", EK-11070-MM-002, refers to the M8133 in board lists for the KB11-C where M8123 is meant.''

{{PDP-11}}

[[Category: UNIBUS PDP-11s]]

@@ Line 27: / Line 27: @@
 * [http://bitsavers.org/pdf/dec/pdp11/1170/MP0KB11-C0_KB11-C_revB_cpy2_Nov1975.pdf KB11-C 16-Bit Processor Engineering Drawings] (alt copy)
 * [http://bitsavers.org/pdf/dec/pdp11/1170/KB11-C_signalIndex.pdf KB11-C Signal Index]
 [[Category: PDP-11 UNIBUS Processors]]

@@ Line 15: / Line 15: @@
 respectively.
-'''''Note''''': ''The DEC documentation contains an error here. The "PDP-11/70 Maintenance and Installation Manual", EK-11070-MM-002, refers to the M8133 in board lists for the KB11-C, where the M8123 is meant (e.g. pg. 1-3). However the KB11-C Engineering Drawings include the drawings for the M8123, not the M8133; other manuals also confirm that the KB11-C uses the M8123 (see, for example, the KB11-A,D Maintainence Manual, EK-KB11A-MM-004, pg 1-1).''
+'''''Note''''': ''The DEC documentation contains an error here. The "PDP-11/70 Maintenance and Installation Manual", EK-11070-MM-002, refers to the M8133 in board lists for the KB11-C, where the M8123 is meant (e.g. pg. 1-3). However, the KB11-C Engineering Drawings include the drawings for the M8123, not the M8133; other manuals also confirm that the KB11-C uses the M8123 (see, for example, the KB11-A,D Maintainence Manual, EK-KB11A-MM-004, pg 1-1).''
 {{PDP-11}}
 [[Category: PDP-11 UNIBUS Processors]]

← Older revision		Revision as of 10:32, 11 October 2022
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	{{PDP-11}}		{{PDP-11}}

−	[[Category: PDP-11 ~~Processors]]~~	+	[[Category: PDP-11 UNIBUS Processors]]
−	~~[[Category:~~ UNIBUS Processors]]

← Older revision		Revision as of 01:15, 13 May 2018
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−	The '''KB11-C''' [[Central Processing Unit\|CPU]] is the later CPU for the [[PDP-11/70]]; it is basically the same as the earlier [[KB11-B CPU]], except that it ~~uses~~ the [[FP11-C Floating-Point Processor]] instead of the [[FP11-B Floating-Point Processor]]	+	The '''KB11-C''' [[Central Processing Unit\|CPU]] is the later CPU for the [[PDP-11/70]]; it is basically the same as the earlier [[KB11-B CPU]], except that it takes the later [[synchronous]] [[FP11-C Floating-Point Processor]], instead of the [[asynchronous]] earlier [[FP11-B Floating-Point Processor]]

	==Boards==		==Boards==