PDP-11/04 - Revision history

Jnc: /* External links */ +pdp11 processor handbook

2024-02-29T21:36:18Z

‎External links: +pdp11 processor handbook

2022-12-04T14:41:05Z

‎See also: SACK turnaround and CPU hangs

2022-02-22T13:08:23Z

‎External links: +Maintenance Card

2022-02-19T23:57:12Z

‎External links: +manual, engineering drawings

2020-01-29T16:00:17Z

add cpu type

2018-02-17T14:40:49Z

Proper cat

2016-04-15T00:40:39Z

‎Registers: clarify

2016-04-10T14:04:28Z

‎Registers: More detail

2016-03-31T11:29:25Z

typos

2016-03-29T01:16:55Z

clean ujp and expand a bit

@@ Line 52: / Line 52: @@
 * [http://www.bitsavers.org/www.computer.museum.uq.edu.au/pdf/EK-11004-OP-001%20PDP-11-04%20System%20User's%20Manual.pdf PDP-11/04 system user's manual]
 * [http://www.bitsavers.org/pdf/dec/pdp11/1104/MP00019_1104_EngrDrws_Feb78.pdf PDP-11/04 engineering drawings]
 * [http://www.vaxhaven.com/images/8/84/EK-11034-MC-003.pdf PDP-11/04/34/34A Maintenance Card] (EK-11034-MC-003)
 * [http://www.corestore.org/1104.htm PDP-11/04] at corestore.org

@@ Line 42: / Line 42: @@
 | 777713 || Destination data
 |}
 ==External links==

@@ Line 47: / Line 47: @@
 * [http://www.bitsavers.org/www.computer.museum.uq.edu.au/pdf/EK-11004-OP-001%20PDP-11-04%20System%20User's%20Manual.pdf PDP-11/04 system user's manual]
 * [http://www.bitsavers.org/pdf/dec/pdp11/1104/MP00019_1104_EngrDrws_Feb78.pdf PDP-11/04 engineering drawings]
 * [http://www.corestore.org/1104.htm PDP-11/04] at corestore.org

← Older revision		Revision as of 23:57, 19 February 2022
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	==External links==		==External links==

		+	* [http://www.bitsavers.org/www.computer.museum.uq.edu.au/pdf/EK-11004-OP-001%20PDP-11-04%20System%20User's%20Manual.pdf PDP-11/04 system user's manual]
		+	* [http://www.bitsavers.org/pdf/dec/pdp11/1104/MP00019_1104_EngrDrws_Feb78.pdf PDP-11/04 engineering drawings]
	* [http://www.corestore.org/1104.htm PDP-11/04] at corestore.org		* [http://www.corestore.org/1104.htm PDP-11/04] at corestore.org

@@ Line 1: / Line 1: @@
 [[Image:pdp11_04.jpg|thumb|right|200px|PDP-11/04]]
-The '''PDP-11/04''' was a mid/late-70s implementation of the [[PDP-11]] architecture for the [[UNIBUS]]; it was a replacement for the [[PDP-11/05]]. It was implemented on a single [[DEC card form factor|hex]] card (M7263), the first PDP-11 [[CPU]] to be contained on a single board.
+The '''PDP-11/04''' was a mid/late-70s implementation of the [[PDP-11]] architecture for the [[UNIBUS]]; it was a replacement for the [[PDP-11/05]]. It used the [[KD11-D CPU]], which was implemented on a single [[DEC card form factor|hex]] card (M7263), the first PDP-11 [[CPU]] to be contained on a single board.
 It was the first PDP-11 to come standard without a 'proper' lights and switches front panel: the standard [[KY11-LA Operator's Console]] front panel had only 'Boot/Init', 'Halt/Cont', and power switches, and the system came with an [[M9301 ROM]] card which included a console emulator, which communicated through the console terminal.

@@ Line 11: / Line 11: @@
 ==Registers==
-Like its predecessor [[PDP-11/05]], the general registers (R0-R5, SP and PC) have addresses assigned to them, which makes them accessible from the UNIBUS, and also from the KY11-LB Programmer's Console when the machine is halted. Their addresses are:
+Like its predecessor [[PDP-11/05]], the general registers (R0-R5, SP and PC) have addresses assigned to them; they are also accessible from the UNIBUS, and therefore from the KY11-LB Programmer's Console, when the machine is halted. Their addresses are:
 {| class="wikitable"

@@ Line 11: / Line 11: @@
 ==Registers==
-Like its predecessor [[PDP-11/05]], the general registers (R0-R5, SP and PC) have addresses assigned to them, which makes them accessible from the KY11-LB Programmer's Console when the machine is halted. Their addresses are:
+Like its predecessor [[PDP-11/05]], the general registers (R0-R5, SP and PC) have addresses assigned to them, which makes them accessible from the UNIBUS, and also from the KY11-LB Programmer's Console when the machine is halted. Their addresses are:
 {| class="wikitable"
@@ Line 27: / Line 27: @@
 |}
-Note that the register addresses, like those on the -11/05, increment by 1, not by 2, as is usual for word-sized items.
+Note that the registers are word-accessible at odd addresses on the UNIBUS (unlike any other device); and their addresses, like those on the -11/05, increment by 1, not by 2, as is usual for word-sized items.
 In addition, four internal CPU registers which record the CPU's most recent memory operations are also available:

@@ Line 1: / Line 1: @@
 [[Image:pdp11_04.jpg|thumb|right|200px|PDP-11/04]]
-From the page:
+The '''PDP-11/04''' was a mid/late-70s implementation of the [[PDP-11]] architecture for the [[UNIBUS]]; it was a replacement for the [[PDP-11/05]]. It was implemented on a single [[DEC card form factor|hex]] card, the first PDP-11 [[CPU]] to be contained on a single board.
-<blockquote>
+It was the first PDP-11 to come standard without a 'proper' lights and switches front panel: the standard [[KY11-LA Operator's Console]] front panel had only 'Boot/Init', 'Halt/Cont', and power switches, and the system came with an [[M9301 ROM]] card which included a console emulator, which communicated through the console terminal.
-It came in two chassis, like the 11/05 & 11/10 - a half-height example, which had the entire Unibus backplane, power supply, front panel - basically the whole computer - sliding into an evil jamming finger-trapping metal sleeve - and a full-height example, basically the same BA11 box as used by the 11/35 and many many other DEC applications. It's very similar to its higher-spec twin, the 11/34.
+DEC did offer the [[KY11-LB Programmer's Console]] as an option for the -11/04; it had an octal keypad, the usual 'Halt'/'Start'/etc keys, and a 6-digit LED display which showed address/data digitally.
-</blockquote>
 ==Registers==
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 |}
-{{stub}}
+* [http://www.corestore.org/1104.htm PDP-11/04] at corestore.org
 {{PDP-11}}
 [[Category:UNIBUS processors]]