Talk:QBUS backplanes - Revision history

Jnc: /* QBUS Cards */ I did study Latin, but I remember very little!

2024-08-26T16:51:36Z

‎QBUS Cards: I did study Latin, but I remember very little!

Vaxorcist: /* QBUS Cards */

2024-08-25T17:59:32Z

‎QBUS Cards

Jnc: /* QBUS Cards */ Good point; let me work out the best way to fix that.

2024-08-25T17:48:06Z

‎QBUS Cards: Good point; let me work out the best way to fix that.

Vaxorcist: /* Height vs. Width in DEC Backplanes Section */

2024-08-25T16:29:30Z

‎Height vs. Width in DEC Backplanes Section

Jnc: Tricky question!

2024-07-28T17:21:59Z

Tricky question!

Glitch: Height vs. Width in QBUS/DEC Backplanes Section

2024-07-28T14:48:56Z

Height vs. Width in QBUS/DEC Backplanes Section

New page

==Height vs. Width in DEC Backplanes Section==

Is it alright to change the table heading "Height" to "Width" in the '''DEC Backplanes''' section? "Height" in this context should refer to the module's size (dual, quad, hex).

@@ Line 10: / Line 10: @@
 ==QBUS Cards==
 It "says: "... and so a single slot can hold two separate dual-width QBUS [[peripheral controller|devices]] (the link pointing to "peripheral controller"), which I think is misleading, as there are a some CPU and memory boards (which are not peripheral controllers). I suggest to either change the link to point to a better fitting page, define "device" as more than just "peripheral controller", or explicitly add CPU and memory cards.
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 :: I know you are the best to fix that - you are are a native speaker and very experienced in writing. Suum cuique! (Did you have Latin at school? All I can remember from my Latin lessons are the "wise sayings" ...) [[User:Vaxorcist|Vaxorcist]] ([[User talk:Vaxorcist|talk]]) 19:58, 25 August 2024 (CEST)
 By the way - best wishes! [[User:Vaxorcist|Vaxorcist]] ([[User talk:Vaxorcist|talk]]) 18:29, 25 August 2024 (CEST)

← Older revision		Revision as of 17:59, 25 August 2024
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	: Good point; let me work out the best way to fix that. [[User:Jnc\|Jnc]] ([[User talk:Jnc\|talk]]) 19:47, 25 August 2024 (CEST)		: Good point; let me work out the best way to fix that. [[User:Jnc\|Jnc]] ([[User talk:Jnc\|talk]]) 19:47, 25 August 2024 (CEST)
		+
		+	:: I know you are the best to fix that - you are are a native speaker and very experienced in writing. Suum cuique! (Did you have Latin at school? All I can remember from my Latin lessons are the "wise sayings" ...) [[User:Vaxorcist\|Vaxorcist]] ([[User talk:Vaxorcist\|talk]]) 19:58, 25 August 2024 (CEST)

	By the way - best wishes! [[User:Vaxorcist\|Vaxorcist]] ([[User talk:Vaxorcist\|talk]]) 18:29, 25 August 2024 (CEST)		By the way - best wishes! [[User:Vaxorcist\|Vaxorcist]] ([[User talk:Vaxorcist\|talk]]) 18:29, 25 August 2024 (CEST)

@@ Line 11: / Line 11: @@
 ==QBUS Cards==
 It "says: "... and so a single slot can hold two separate dual-width QBUS [[peripheral controller|devices]] (the link pointing to "peripheral controller"), which I think is misleading, as there are a some CPU and memory boards (which are not peripheral controllers). I suggest to either change the link to point to a better fitting page, define "device" as more than just "peripheral controller", or explicitly add CPU and memory cards.
 By the way - best wishes! [[User:Vaxorcist|Vaxorcist]] ([[User talk:Vaxorcist|talk]]) 18:29, 25 August 2024 (CEST)

← Older revision		Revision as of 16:29, 25 August 2024
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	: PS: We follow the Wikipedia system for talk: pages; please sign all posts (using the <nowiki>~~~~</nowiki> special form); that way, if someone reads this a year from now, they can see instantly who said what, without having to look in the history. [[User:Jnc\|Jnc]] ([[User talk:Jnc\|talk]]) 19:21, 28 July 2024 (CEST)		: PS: We follow the Wikipedia system for talk: pages; please sign all posts (using the <nowiki>~~~~</nowiki> special form); that way, if someone reads this a year from now, they can see instantly who said what, without having to look in the history. [[User:Jnc\|Jnc]] ([[User talk:Jnc\|talk]]) 19:21, 28 July 2024 (CEST)
		+
		+	==QBUS Cards==
		+	It "says: "... and so a single slot can hold two separate dual-width QBUS [[peripheral controller\|devices]] (the link pointing to "peripheral controller"), which I think is misleading, as there are a some CPU and memory boards (which are not peripheral controllers). I suggest to either change the link to point to a better fitting page, define "device" as more than just "peripheral controller", or explicitly add CPU and memory cards.
		+
		+	By the way - best wishes! [[User:Vaxorcist\|Vaxorcist]] ([[User talk:Vaxorcist\|talk]]) 18:29, 25 August 2024 (CEST)

← Older revision		Revision as of 17:21, 28 July 2024
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	==Height vs. Width in DEC Backplanes Section==		==Height vs. Width in DEC Backplanes Section==

−	Is it alright to change the table heading "Height" to "Width" in the '''DEC Backplanes''' section? "Height" in this context should refer to the module's size (dual, quad, hex).	+	Is it alright to change the table heading "Height" to "Width" in the '''DEC Backplanes''' section? "Height" in this context should refer to the module's size (dual, quad, hex). [[User:Glitch\|Glitch]] ([[User talk:Glitch\|talk]]) 16:48, 28 July 2024
		+
		+	: Tricky question! DEC has changed the orientation of PDP-11 boards (and thus backplanes, into which they plug) three times, over history. And clearly, which dimension you are measuring with 'height' will change with board orientation. Originally, in the -11/20, they were vertical, with the contact fingers at the top. Then, starting with the -11/45, for a long time, they were vertical, but with the contact fingers at the back edge. (I.e. rotated 90 degrees around the board-normal horizontal axis, from that of the -11/20.) There were other ones mixed in there, e.g. the 5-1/4" cabinet for the -11/05, where the boards were horizontal. Starting with the -11/03, horizontal became the usual board orientation (although rotated 90 degrees around the vertical axis, from that of -11/05) - except for the -11/84, where they went back to vertical. So, there is no single, universal, correct, word for the 'parallel to the board' axis.
		+	: What we generally do, in most troublesome cases, is to use exactly the terminology that is in the original DEC documents (often with an explanatory note). Looking in the 'Microcomputer Product handbook', pg. 59-1 (diagram on pg. 69-4), 'Height' is defined as the distance across the board, from the contact finger edge, to the handles edge; 'Width' is defined as the distance across the board, from one edge, to the other. (For the mid-period orientation, above, the correct term for the "module's size" is the 'height' - e.g. 'hex-height board'.)
		+	: The column you want to change - the number of slots - is called the 'Length' in the 'Microcomputer Product handbook'. So, if you want to change the heading, that's really the only available choice under the 'use exactly the terminology that is in the original DEC documents' system. There is currently an explanatory note: "'Height' is the number of slots", which we should make sure to keep in sync with whatever we do.
		+
		+	: PS: We follow the Wikipedia system for talk: pages; please sign all posts (using the <nowiki>~~~~</nowiki> special form); that way, if someone reads this a year from now, they can see instantly who said what, without having to look in the history. [[User:Jnc\|Jnc]] ([[User talk:Jnc\|talk]]) 19:21, 28 July 2024 (CEST)