KA11 changes for the KT11-B - Revision history

Jnc: rm bloat

2023-07-02T16:11:27Z

rm bloat

Jnc: move to K11-B specific cat

2022-10-11T20:19:02Z

move to K11-B specific cat

Jnc: better cat

2018-12-16T22:01:31Z

better cat

Jnc: +cat, +links

2018-12-16T13:54:36Z

+cat, +links

Jnc: /* KA/KT Interface */ typo

2017-07-08T00:58:41Z

‎KA/KT Interface: typo

Jnc: /* KA/KT Interface */ expand description of the cables

2016-09-01T01:05:57Z

‎KA/KT Interface: expand description of the cables

Jnc: /* Board modifications */ grammar

2016-08-25T20:19:37Z

‎Board modifications: grammar

Jnc: Add addnl drawings

2016-08-25T09:56:26Z

Add addnl drawings

Jnc: rm extraneous header

2016-08-25T09:42:39Z

rm extraneous header

Jnc: add missing signal names

2016-08-25T09:41:47Z

add missing signal names

@@ Line 243: / Line 243: @@
 | B09H1 || F11M2 || ''K1-3 ISR 12 L''
 |}
 [[Category: KT11-B]]

← Older revision		Revision as of 20:19, 11 October 2022
Line 246:		Line 246:
	{{PDP-11}}		{{PDP-11}}

−	[[Category: ~~PDP~~-~~11 Processors~~]]	+	[[Category: KT11-B]]

← Older revision		Revision as of 22:01, 16 December 2018
Line 246:		Line 246:
	{{PDP-11}}		{{PDP-11}}

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

@@ Line 1: / Line 1: @@
-The [[KT11-B Paging Option]] for the [[PDP-11/20]] involves some modifications to the [[KA11 CPU]]. Those changes are documented in a [[DEC]] print set, 7605961-0, "Central Processor for KT11-B".
+The [[KT11-B Paging Option]] for the [[PDP-11/20]] involves some modifications to the [[KA11 CPU]]. Those changes are documented in a [[Digital Equipment Corporation|DEC]] print set, 7605961-0, "Central Processor for KT11-B".
 The following prints are included in the "Central Processor for KT11-B" set:
@@ Line 27: / Line 27: @@
 ==KA/KT Interface==
-The KA11 and KT11-B are connected by a [[UNIBUS]] between them (which carries all the CPU's normal bus functions, such as memory cycles), and also by an additional cable. That cable carries various other signals, mostly internal signals of the KA11 which are used by the KT11-B (along with a few additional ones which are synthesized specially), although there are a few signals from the KT11-B, used in the modified KA11.
+The KA11 and KT11-B are connected by a [[UNIBUS]] between them (which carries all the CPU's normal bus functions, such as memory cycles), and also by an additional cable. That cable carries various other [[signal]]s, mostly internal signals of the KA11 which are used by the KT11-B (along with a few additional ones which are synthesized specially), although there are also a few signals from the KT11-B, used in the modified KA11.
 On the KT11 end, the cable plugs into slot D12, and on the KA11 end, into slot B09. The cable pinout is:
 {| class="wikitable"
-! Pin !! Source !! Signal !! ! Pin !! Source !! Signal
+! Pin !! Source !! Signal !! Pin !! Source !! Signal
 |-
 | A1 || - || Ground || A2 || - || ''Unused''
@@ Line 75: / Line 75: @@
 ==KA11 changes==
-The changes to the KA11 include a small number of modifications to several boards in the KA11 (below), and a number of changes to the wiring of the CPU backplane (also below).
+The changes to the KA11 include a small number of modifications to several boards in the KA11 (below), and a number of changes to the wiring of the CPU [[backplane]] (also below).
 An M138 FLIP CHIP (octal three-input NAND gates) is plugged into the KA11 backplane (in slot B08, otherwise unused), to provide additional gates, which are used to synthesize some of the signals sent across the KA11 - KT11-B interface cable. (Recall that slot B09 is where the interface cable between the KT11-B and KA11 plugs into the KA11.)
@@ Line 245: / Line 245: @@
 {{PDP-11}}

@@ Line 27: / Line 27: @@
 ==KA/KT Interface==
-The KA11 and KT11-B are connected by a [[UNIBUS]] between them (which carries all the CPU's normal bus functions, such as memory cycles), and also by an additional cable. That cable carries various other signals, mostly internal signals of the KA11 which are used by the KT11-B (along with a few additional ones which are synthesized specially), although there are a few signale from the KT11-B, used in the modified KA11.
+The KA11 and KT11-B are connected by a [[UNIBUS]] between them (which carries all the CPU's normal bus functions, such as memory cycles), and also by an additional cable. That cable carries various other signals, mostly internal signals of the KA11 which are used by the KT11-B (along with a few additional ones which are synthesized specially), although there are a few signals from the KT11-B, used in the modified KA11.
 On the KT11 end, the cable plugs into slot D12, and on the KA11 end, into slot B09. The cable pinout is:

@@ Line 79: / Line 79: @@
 ===Board modifications===
-Alas, there is only one known set of the prints of the KT11-B changes to the KA11 - and that set is missing a page: "PC Board Modifications", D-AP-7605961-0-10. Luckily, there is apparently just enough duplicate information elsewhere (including a hand-modified set of KA11 prints, showing the changes to support the KT11-B) to allow it to be re-created.
+Alas, there is only one known set of the prints of the KT11-B changes to the KA11 - and that set is missing the page: "PC Board Modifications", D-AP-7605961-0-10. Luckily, there is apparently just enough duplicate information elsewhere (including a hand-modified set of KA11 prints, showing the changes to support the KT11-B) to allow it to be re-created.
 The following are the changes on the three KA11 boards which are modified (KA11 backplane wiring changes are given in other sections below):

@@ Line 17: / Line 17: @@
 |-
 | D-CS-7605961-0-8 || 4 || Bus & Console Control - M724 K13
 |}
@@ Line 104: / Line 110: @@
 The following lists of wiring changes on the KA11 backplane give the content from print 7605961-0-11, "KA11 Mods For Use With KT11-B". All wires are listed as being 30 AWG.
-'''Note:''' This print reproduced poorly, so there may be transcription errors (e.g. '8' for '3', etc). '?' indicates an un-readable character.
+'''Note:''' This print reproduced poorly, so there may be transcription errors (e.g. '8' for '3', etc). The goal is to eventually cross-check all this information with the prints, to verify all data, and supply that which is currently missing here. '?' indicates a currently un-readable character.
 {| class="wikitable"

← Older revision		Revision as of 09:42, 25 August 2016
Line 1:		Line 1:
	The [[KT11-B Paging Option]] for the [[PDP-11/20]] involves some modifications to the [[KA11 CPU]]. Those changes are documented in a [[DEC]] print set, 7605961-0, "Central Processor for KT11-B".		The [[KT11-B Paging Option]] for the [[PDP-11/20]] involves some modifications to the [[KA11 CPU]]. Those changes are documented in a [[DEC]] print set, 7605961-0, "Central Processor for KT11-B".
−
−	~~==Print set==~~

	The following prints are included in the "Central Processor for KT11-B" set:		The following prints are included in the "Central Processor for KT11-B" set:

@@ Line 73: / Line 73: @@
 An M138 FLIP CHIP (octal three-input NAND gates) is plugged into the KA11 backplane (in slot B08, otherwise unused), to provide additional gates, which are used to synthesize some of the signals sent across the KA11 - KT11-B interface cable. (Recall that slot B09 is where the interface cable between the KT11-B and KA11 plugs into the KA11.)
-===KA11 modifications===
+===Board modifications===
 Alas, there is only one known set of the prints of the KT11-B changes to the KA11 - and that set is missing a page: "PC Board Modifications", D-AP-7605961-0-10. Luckily, there is apparently just enough duplicate information elsewhere (including a hand-modified set of KA11 prints, showing the changes to support the KT11-B) to allow it to be re-created.
@@ Line 233: / Line 233: @@
 | B08M2 || B09E2 || B08M2
 |-
-| F02J1 || C06V1 || - || rowspan="2" | Unlisted <br> (''Not in original table; added by hand'')
+| F02J1 || C06V1 || ''K2-3 CLR PTR L'' || rowspan="2" | Unlisted <br> (''Not in original table; added by hand'')
 |-
-| B09H1 || F11M2 || -
+| B09H1 || F11M2 || ''K1-3 ISR 12 L''
 |}
 {{PDP-11}}