RF11 disk controller - Revision history

Jnc: /* External links */ Bitsavers has reorganized a bit

2026-10-05T14:12:02Z

External links: Bitsavers has reorganized a bit

← Older revision		Revision as of 14:12, 5 October 2026
Line 73:		Line 73:
	==External links==		==External links==

	* [http://www.bitsavers.org/pdf/dec/unibus/DEC-11-HRFB-D__RF11_RS11_DECdisk_System_Manual__Aug71.pdf RF11/RS11 DECdisk system manual] (DEC-11-HRFB-D)		* [http://www.bitsavers.org/pdf/dec/unibus/RF11/DEC-11-HRFB-D__RF11_RS11_DECdisk_System_Manual__Aug71.pdf RF11/RS11 DECdisk system manual] (DEC-11-HRFB-D)
	* [http://www.bitsavers.org/www.computer.museum.uq.edu.au/pdf/DEC-11-HRFD-D%20RF11%20&%20RS11%20DECdisk%20System%20Manual.pdf RF11/RS11 DECdisk system manual] (DEC-11-HRFD-D)		* [http://www.bitsavers.org/www.computer.museum.uq.edu.au/pdf/DEC-11-HRFD-D%20RF11%20&%20RS11%20DECdisk%20System%20Manual.pdf RF11/RS11 DECdisk system manual] (DEC-11-HRFD-D)
	* [http://www.bitsavers.org/pdf/dec/unibus/RF11_EngrDrws_Oct70.pdf RF11/RS11 DECdisk system engineering drawings]		* [http://www.bitsavers.org/pdf/dec/unibus/RF11/RF11_EngrDrws_Oct70.pdf RF11/RS11 DECdisk system engineering drawings]

	[[Category: UNIBUS Storage Controllers]]		[[Category: UNIBUS Storage Controllers]]

Jnc: +manual, prints, physical layout

2021-12-08T21:52:43Z

+manual, prints, physical layout

← Older revision		Revision as of 21:52, 8 December 2021
Line 1:		Line 1:
	The '''RF11''' [[controller]] from [[Digital Equipment Corporation\|DEC]] for the [[UNIBUS]] is an early [[secondary storage]] controller for the [[PDP-11]]. It can interface with up to eight [[RS11 disk drive\|RS11]] [[fixed-head disk]] drives; each has a capacity of 512 Kbytes of storage.		The '''RF11''' [[device controller]] from [[Digital Equipment Corporation\|DEC]] for the [[UNIBUS]] is an early [[secondary storage]] controller for the [[PDP-11]]. It can interface with up to eight [[RS11 disk drive\|RS11]] [[fixed-head disk]] drives; each has a capacity of 512 Kbytes of storage.

	Unlike all other DEC disk controllers, the RF11 can read or write individual words; this was itended to allow optimal use of both disk space and [[main memory]] (e.g. during [[swapping]]).		Unlike all other DEC disk controllers, the RF11 can read or write individual words; this was itended to allow optimal use of both disk space and [[main memory]] (e.g. during [[swapping]]).

	Like many of the early large [[peripheral]] controllers for the [[PDP-11]], it was a large custom [[wire-wrap]]ped [[backplane]] which bolted into the front of a 19 inch rack, such as an [[H960]]; into it plugged about 40 small M-Series [[FLIP CHIP]]s.		Like many of the early large [[peripheral]] controllers for the [[PDP-11]], it was a large custom [[wire-wrap]]ped [[backplane]] which bolted into the front of a 19 inch rack, such as an [[H960 rack\|H960]]; into it plugged about 40 small M-Series [[FLIP CHIP]]s.

			A single rack held the controller, its [[power supply]], and one or more drives (up to two in that rack), along with an [[DEC indicator panel\|indicator panel]] at the top of the rack.

	==Device registers==		==Device registers==
Line 68:		Line 70:
	\| colspan=5 \| Unused \|\| colspan=11 \| Disk Segment Address		\| colspan=5 \| Unused \|\| colspan=11 \| Disk Segment Address
	{{16bitoctal-bitout}}		{{16bitoctal-bitout}}

			==External links==

			* [http://www.bitsavers.org/pdf/dec/unibus/DEC-11-HRFB-D__RF11_RS11_DECdisk_System_Manual__Aug71.pdf RF11/RS11 DECdisk system manual] (DEC-11-HRFB-D)
			* [http://www.bitsavers.org/www.computer.museum.uq.edu.au/pdf/DEC-11-HRFD-D%20RF11%20&%20RS11%20DECdisk%20System%20Manual.pdf RF11/RS11 DECdisk system manual] (DEC-11-HRFD-D)
			* [http://www.bitsavers.org/pdf/dec/unibus/RF11_EngrDrws_Oct70.pdf RF11/RS11 DECdisk system engineering drawings]

	[[Category: UNIBUS Storage Controllers]]		[[Category: UNIBUS Storage Controllers]]

Jnc: Use octal reg template

2018-04-15T16:05:07Z

Use octal reg template

← Older revision		Revision as of 16:05, 15 April 2018
Line 35:		Line 35:
	{{16bit-header}}		{{16bit-header}}
	\| colspan=16 \| WC15 <---> WC00		\| colspan=16 \| WC15 <---> WC00
	{{~~16bit~~-bitout}}		{{16bitoctal-bitout}}

	===777464: Current Memory Address Register (CMA)===		===777464: Current Memory Address Register (CMA)===
	{{16bit-header}}		{{16bit-header}}
	\| colspan=15 \| BA15 <---> BA01 \|\| Unused		\| colspan=15 \| BA15 <---> BA01 \|\| Unused
	{{~~16bit~~-bitout}}		{{16bitoctal-bitout}}

	===777466: Disk Address Register (DAR)===		===777466: Disk Address Register (DAR)===
	{{16bit-header}}		{{16bit-header}}
	\| colspan=5 \| Track Address \|\| colspan=11 \| Word Address		\| colspan=5 \| Track Address \|\| colspan=11 \| Word Address
	{{~~16bit~~-bitout}}		{{16bitoctal-bitout}}

	===777470: Disk Address Extension Error Register (DAR)===		===777470: Disk Address Extension Error Register (DAR)===
Line 57:		Line 57:
	{{16bit-header}}		{{16bit-header}}
	\| colspan=16 \| DB15 <---> DB00		\| colspan=16 \| DB15 <---> DB00
	{{~~16bit~~-bitout}}		{{16bitoctal-bitout}}

	===777474: Maintenance Register (MA)===		===777474: Maintenance Register (MA)===
Line 67:		Line 67:
	{{16bit-header}}		{{16bit-header}}
	\| colspan=5 \| Unused \|\| colspan=11 \| Disk Segment Address		\| colspan=5 \| Unused \|\| colspan=11 \| Disk Segment Address
	{{~~16bit~~-bitout}}		{{16bitoctal-bitout}}
	[[Category: UNIBUS Storage Controllers]]		[[Category: UNIBUS Storage Controllers]]

Jnc: Have an article for that...

2018-04-14T19:10:51Z

Have an article for that...

← Older revision		Revision as of 19:10, 14 April 2018
Line 1:		Line 1:
	The '''RF11''' controller from [[Digital Equipment Corporation\|DEC]] for the [[UNIBUS]] is an early [[secondary storage]] controller for the [[PDP-11]]. It can interface with up to eight [[RS11 disk drive\|RS11]] fixed-[[head~~]] [[magnetic storage\|magnetic]] [[~~disk]] drives; each has a capacity of 512 Kbytes of storage.		The '''RF11''' [[controller]] from [[Digital Equipment Corporation\|DEC]] for the [[UNIBUS]] is an early [[secondary storage]] controller for the [[PDP-11]]. It can interface with up to eight [[RS11 disk drive\|RS11]] [[fixed-head disk]] drives; each has a capacity of 512 Kbytes of storage.

	Unlike all other DEC disk controllers, the RF11 can read or write individual words; this was itended to allow optimal use of both disk space and [[main memory]] (e.g. during [[swapping]]).		Unlike all other DEC disk controllers, the RF11 can read or write individual words; this was itended to allow optimal use of both disk space and [[main memory]] (e.g. during [[swapping]]).

	Like many of the early large peripheral controllers for the [[PDP-11]], it was a large custom [[wire-wrap]]ped [[backplane]] which bolted into the front of a 19 inch rack, such as an [[H960]]; into it plugged about 40 small M-Series [[FLIP CHIP]]s.		Like many of the early large [[peripheral]] controllers for the [[PDP-11]], it was a large custom [[wire-wrap]]ped [[backplane]] which bolted into the front of a 19 inch rack, such as an [[H960]]; into it plugged about 40 small M-Series [[FLIP CHIP]]s.

	==Device registers==		==Device registers==

Jnc: Mention reason for word-addressability

2018-04-14T19:00:50Z

Mention reason for word-addressability

← Older revision		Revision as of 19:00, 14 April 2018
Line 1:		Line 1:
	The '''RF11''' controller from [[Digital Equipment Corporation\|DEC]] for the [[UNIBUS]] is an early [[secondary storage]] controller for the [[PDP-11]]. It can interface with up to eight [[RS11 disk drive\|RS11]] fixed-[[head]] [[magnetic storage\|magnetic]] [[disk]] drives; each has a capacity of 512 Kbytes of storage.		The '''RF11''' controller from [[Digital Equipment Corporation\|DEC]] for the [[UNIBUS]] is an early [[secondary storage]] controller for the [[PDP-11]]. It can interface with up to eight [[RS11 disk drive\|RS11]] fixed-[[head]] [[magnetic storage\|magnetic]] [[disk]] drives; each has a capacity of 512 Kbytes of storage.

	Unlike all other DEC disk controllers, the RF11 can read or write individual words.		Unlike all other DEC disk controllers, the RF11 can read or write individual words; this was itended to allow optimal use of both disk space and [[main memory]] (e.g. during [[swapping]]).

	Like many of the early large peripheral controllers for the [[PDP-11]], it was a large custom [[wire-wrap]]ped [[backplane]] which bolted into the front of a 19 inch rack, such as an [[H960]]; into it plugged about 40 small M-Series [[FLIP CHIP]]s.		Like many of the early large peripheral controllers for the [[PDP-11]], it was a large custom [[wire-wrap]]ped [[backplane]] which bolted into the front of a 19 inch rack, such as an [[H960]]; into it plugged about 40 small M-Series [[FLIP CHIP]]s.

Jnc: /* Device registers */ Add register details

2018-04-14T18:57:38Z

Device registers: Add register details

← Older revision		Revision as of 18:57, 14 April 2018
Line 27:		Line 27:
	\|}		\|}

			===777460: Disk Control Status Register (DCS)===
			{{16bit-header}}
			\| Error \|\| Freeze \|\| Write Check \|\| Data Parity \|\| NXD \|\| Write Lockout\|\| Missed Xfer \|\| Disk Clear \|\| Control Ready \|\| Interrupt Enable \|\| colspan=2 \| Ext Mem \|\| Maintenance \|\| colspan=2 \| Function Register \|\| Go
			{{16bit-bitout}}

			===777462: Word Count Register (WC)===
			{{16bit-header}}
			\| colspan=16 \| WC15 <---> WC00
			{{16bit-bitout}}

			===777464: Current Memory Address Register (CMA)===
			{{16bit-header}}
			\| colspan=15 \| BA15 <---> BA01 \|\| Unused
			{{16bit-bitout}}

			===777466: Disk Address Register (DAR)===
			{{16bit-header}}
			\| colspan=5 \| Track Address \|\| colspan=11 \| Word Address
			{{16bit-bitout}}

			===777470: Disk Address Extension Error Register (DAR)===
			{{16bit-header}}
			\| Address Parity \|\| colspan=3 \| Timing Track Error \|\| Unused \|\| NXM \|\| Unused \|\| Current Memory \|\| Data Req Late \|\| Unused \|\| Disk Addr Ovflo \|\| colspan=3 \| Disk Address \|\| colspan=2 \| Track Address
			{{16bit-bitout}}

			The low five bits of this register are actually an extension to the Disk Address Register (above).

			===777472: Data Buffer Register (DBR)===
			{{16bit-header}}
			\| colspan=16 \| DB15 <---> DB00
			{{16bit-bitout}}

			===777474: Maintenance Register (MA)===
			{{16bit-header}}
			\| colspan=3 \| Unused \|\| Data \|\| colspan=3 \| Timing \|\| Unused \|\| colspan=2 \| Data Track \|\| colspan=2 \| Timing C \|\| colspan=2 \| Timing B \|\| colspan=2 \| Timing A
			{{16bit-bitout}}

			===777476: Address of Disk Segment Register (ADS)===
			{{16bit-header}}
			\| colspan=5 \| Unused \|\| colspan=11 \| Disk Segment Address
			{{16bit-bitout}}
	[[Category: UNIBUS Storage Controllers]]		[[Category: UNIBUS Storage Controllers]]

Jnc: Add register list

2018-04-14T13:48:38Z

Add register list

← Older revision		Revision as of 13:48, 14 April 2018
Line 1:		Line 1:
	The [[DEC]] ~~RF11~~ is the ~~controller used to~~ interface with up to eight [[RS11]] fixed-head ~~fixed-platter~~ drives~~. It occupies the top of a H960 cabinet and~~ has a ~~wire wrapped backplane~~.		The '''RF11''' controller from [[Digital Equipment Corporation\|DEC]] for the [[UNIBUS]] is an early [[secondary storage]] controller for the [[PDP-11]]. It can interface with up to eight [[RS11 disk drive\|RS11]] fixed-[[head]] [[magnetic storage\|magnetic]] [[disk]] drives; each has a capacity of 512 Kbytes of storage.

	[[~~Category: DEC Storage Controllers~~]][[Category: UNIBUS Storage Controllers]]		Unlike all other DEC disk controllers, the RF11 can read or write individual words.

			Like many of the early large peripheral controllers for the [[PDP-11]], it was a large custom [[wire-wrap]]ped [[backplane]] which bolted into the front of a 19 inch rack, such as an [[H960]]; into it plugged about 40 small M-Series [[FLIP CHIP]]s.

			==Device registers==

			{\| border=1
			! Register !! Abbreviation !! Address
			\|-
			\|Disk Control Status Register \|\| DCS \|\| 777460
			\|-
			\|Word Count Register \|\| WC \|\| 777462
			\|-
			\|Current Memory Address \|\| CMA \|\| 777464
			\|-
			\|Disk Address Register \|\| DAR \|\| 777466
			\|-
			\|Disk Address Extension Error Register \|\| DAE \|\| 777470
			\|-
			\|Data Buffer Register \|\| DBR \|\| 777472
			\|-
			\|Maintenance Register \|\| MA \|\| 777474
			\|-
			\|Address of Disk Segment Register \|\| ADS \|\| 777476
			\|}

			[[Category: UNIBUS Storage Controllers]]

Jnc: Jnc moved page RF11 to RF11 disk controller: Follow system

2018-04-14T13:25:04Z

Jnc moved page RF11 to RF11 disk controller: Follow system

← Older revision		Revision as of 13:25, 14 April 2018
(No difference)

Toresbe: cap

2007-05-17T01:33:39Z

cap

← Older revision		Revision as of 01:33, 17 May 2007
Line 1:		Line 1:
	The [[DEC]] RF11 is the controller used to interface with up to eight [[RS11]] fixed-head fixed-platter drives. It occupies the top of a H960 cabinet and has a wire wrapped backplane.		The [[DEC]] RF11 is the controller used to interface with up to eight [[RS11]] fixed-head fixed-platter drives. It occupies the top of a H960 cabinet and has a wire wrapped backplane.

	[[Category: DEC ~~storage controllers~~]][[Category: UNIBUS ~~storage controllers~~]]		[[Category: DEC Storage Controllers]][[Category: UNIBUS Storage Controllers]]

Toresbe at 03:12, 16 May 2007

2007-05-16T03:12:50Z

← Older revision		Revision as of 03:12, 16 May 2007
Line 1:		Line 1:
	The [[DEC]] RF11 is the controller used to interface with up to eight [[RS11]] fixed-head fixed-platter drives. It occupies the top of a H960 cabinet and has a wire wrapped backplane.		The [[DEC]] RF11 is the controller used to interface with up to eight [[RS11]] fixed-head fixed-platter drives. It occupies the top of a H960 cabinet and has a wire wrapped backplane.

			[[Category: DEC storage controllers]][[Category: UNIBUS storage controllers]]