RC11 disk controller - Revision history

Jnc: +Implementation, manual, eng drw

2021-12-10T01:14:17Z

+Implementation, manual, eng drw

Jnc: /* Device registers */ Use octal reg template

2018-04-15T15:55:52Z

‎Device registers: Use octal reg template

Jnc: Have an article...

2018-04-14T19:13:17Z

Have an article...

Jnc: Add block size

2018-04-14T13:52:35Z

Add block size

Jnc: A start, has all the key info

2018-04-14T13:19:38Z

A start, has all the key info

New page

The '''RC11''' controller for the [[UNIBUS]] is a very early [[secondary storage]] controller for the [[PDP-11]]. It can handle up to 4 [[RS64 disk drive|RS64]] fixed-[[head]] [[magnetic storage|magnetic]] [[disk]] drives, each with a capacity of 128 Kbytes of storage.

==Device registers==

{| border=1
! Register !! Abbreviation !! Address
|-
|Look Ahead Register || RCLA || 777440
|-
|Disk Address Register || RCDA || 777442
|-
|Disk Error Status Register || RCER || 777444
|-
|Disk Control and Status Register || RCCS || 777446
|-
|Word Count Register || RCWC || 777450
|-
|Current Address Register || RCCA || 777452
|-
|Maintenance Register || RCMN || 777454
|-
|Data Buffer Register || RCDB || 777456
|}

===777440: Look Ahead Register (RCLA)===
{{16bit-header}}
| Bad Address || colspan=2 | Unused || colspan=2 | Unit Number || colspan=5 | Track Number || colspan=6 | Sector Address
{{16bit-bitout}}

===777442: Disk Address Register (RCDA)===
{{16bit-header}}
| colspan=3 | Unused || colspan=2 | Unit Number || colspan=5 | Track Number || colspan=6 | Sector Address
{{16bit-bitout}}

===777444: Disk Error Status Register (RCES)===
{{16bit-header}}
| Data Late || Block Check || Data Sync || NXM || colspan=2 | Unused || Timing Track || Unused || Address Parity || Sync Address || Disk Overflow || Missed Xfer || colspan=4 | Unused
{{16bit-bitout}}

===777446: Disk Control and Status Register (RCCS)===
{{16bit-header}}
| Special Condition || Data Error || Address Error || Write Lock || NXD || Write Check || Inhibit Address || Abort || Ready || Interrupt Enable || colspan=2 | Ext Mem || Mode || colspan=2 | Function || Go
{{16bit-bitout}}

===777450: Word Count Register (RCWC)===
{{16bit-header}}
| colspan=16 | WC15 <---> WC00
{{16bit-bitout}}

===777452: Current Address Register (RCCA)===
{{16bit-header}}
| colspan=15 | BA15 <---> BA01 || Unused
{{16bit-bitout}}

===777454: Maintenance Register (RCMN)===
{{16bit-header}}
| colspan=4 | Unit Select || Write Enable || Word Count || DMA Request || Address Found || Clock Polarity || DMA Enable || Data Track || Address Track || Phase Lock || Address Mark || Data Mark || Clock Track
{{16bit-bitout}}

===777456: Data Buffer Register (RCDB)===
{{16bit-header}}
| colspan=16 | DB15 <---> DB00
{{16bit-bitout}}

[[Category:UNIBUS Storage Controllers]]

@@ Line 1: / Line 1: @@
-The '''RC11''' [[controller]] for the [[UNIBUS]] is a very early [[secondary storage]] controller for the [[PDP-11]]. It can handle up to 4 [[RS64 disk drive|RS64]] [[fixed-head disk]] drives, each with a capacity of 128 Kbytes of storage, organized in 32-word blocks.
+The '''RC11''' [[device controller]] for the [[UNIBUS]] is a very early [[secondary storage]] controller for the [[PDP-11]]. It can handle up to 4 [[RS64 disk drive|RS64]] [[fixed-head disk]] drives, each with a capacity of 128 Kbytes of storage, organized in 32-word blocks.
 The contents of each block are protected by a [[Cyclic redundancy check|CRC]].
@@ Line 65: / Line 65: @@
 {{16bitoctal-bitout}}
 [[Category:UNIBUS Storage Controllers]]

← Older revision		Revision as of 19:13, 14 April 2018
Line 1:		Line 1:
−	The '''RC11''' controller for the [[UNIBUS]] is a very early [[secondary storage]] controller for the [[PDP-11]]. It can handle up to 4 [[RS64 disk drive\|RS64]] fixed-[[head~~]] [[magnetic storage\|magnetic]] [[~~disk]] drives, each with a capacity of 128 Kbytes of storage, organized in 32-word blocks.	+	The '''RC11''' [[controller]] for the [[UNIBUS]] is a very early [[secondary storage]] controller for the [[PDP-11]]. It can handle up to 4 [[RS64 disk drive\|RS64]] [[fixed-head disk]] drives, each with a capacity of 128 Kbytes of storage, organized in 32-word blocks.

	The contents of each block are protected by a [[Cyclic redundancy check\|CRC]].		The contents of each block are protected by a [[Cyclic redundancy check\|CRC]].

← Older revision		Revision as of 13:52, 14 April 2018
Line 1:		Line 1:
−	The '''RC11''' controller for the [[UNIBUS]] is a very early [[secondary storage]] controller for the [[PDP-11]]. It can handle up to 4 [[RS64 disk drive\|RS64]] fixed-[[head]] [[magnetic storage\|magnetic]] [[disk]] drives, each with a capacity of 128 Kbytes of storage.	+	The '''RC11''' controller for the [[UNIBUS]] is a very early [[secondary storage]] controller for the [[PDP-11]]. It can handle up to 4 [[RS64 disk drive\|RS64]] fixed-[[head]] [[magnetic storage\|magnetic]] [[disk]] drives, each with a capacity of 128 Kbytes of storage, organized in 32-word blocks.
		+
		+	The contents of each block are protected by a [[Cyclic redundancy check\|CRC]].

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

@@ Line 28: / Line 28: @@
 {{16bit-header}}
 | Bad Address || colspan=2 | Unused || colspan=2 | Unit Number || colspan=5 | Track Number || colspan=6 | Sector Address
-{{16bit-bitout}}
+{{16bitoctal-bitout}}
 ===777442: Disk Address Register (RCDA)===
 {{16bit-header}}
 | colspan=3 | Unused || colspan=2 | Unit Number || colspan=5 | Track Number || colspan=6 | Sector Address
-{{16bit-bitout}}
+{{16bitoctal-bitout}}
 ===777444: Disk Error Status Register (RCES)===
@@ Line 48: / Line 48: @@
 {{16bit-header}}
 | colspan=16 | WC15 <---> WC00
-{{16bit-bitout}}
+{{16bitoctal-bitout}}
 ===777452: Current Address Register (RCCA)===
 {{16bit-header}}
 | colspan=15 | BA15 <---> BA01 || Unused
-{{16bit-bitout}}
+{{16bitoctal-bitout}}
 ===777454: Maintenance Register (RCMN)===
@@ Line 63: / Line 63: @@
 {{16bit-header}}
 | colspan=16 | DB15 <---> DB00
-{{16bit-bitout}}
+{{16bitoctal-bitout}}
 [[Category:UNIBUS Storage Controllers]]