Difference between pages "RC11 disk controller" and "Computer History Wiki:News"

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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.
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*'''Documentation category''' - [[:Category:Documentation]] has been added, and a link to it added to the Main Page. Anytime you run across a copy of a document hosted here, if it's not tagged with this category tag, please add one to it; thanks! (I know there are quite a few, I'm just too lazy to go search for them!) [[User:Jnc|Jnc]] ([[User talk:Jnc|talk]]) 19:11, 28 December 2018 (CET)
  
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The contents of each block are protected by a [[Cyclic redundancy check|CRC]].
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*'''Categories upgrade''' - In an attempt to make the [http://gunkies.org/w/index.php?title=Special:UncategorizedPages Uncategorized Pages] list more useful, a lot of work on categories was just done. See [[Help talk:Introduction to Categories#Background category?|here]] for details. It's probably worth glancing at the [http://gunkies.org/w/index.php?title=Special%3APrefixIndex&prefix=Category%3A&namespace=0&hideredirects=1 list of categories] to see which ones exist now. [[User:Jnc|Jnc]] ([[User talk:Jnc|talk]]) 14:48, 17 December 2018 (CET)
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** The 'stub' and 'semi-stub' categories have gone away, because they mess up the Uncategorized Pages list; the templates will remain, though (and people should keep using them). [[User:Jnc|Jnc]] ([[User talk:Jnc|talk]]) 23:31, 18 December 2018 (CET)
  
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==Device registers==
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* '''Semi-stubs''' - Since we have a lot of articles that are better than pure stubs, but could still use more content, I have created a new 'semi-stub article' template for them, to display a note, etc: [[:Template:Semi-stub]]. Syntax is just like 'stub': <i><nowiki>{{semi-stub}}</nowiki></i>. [[User:Jnc|Jnc]] ([[User talk:Jnc|talk]]) 16:01, 18 September 2018 (CEST)
  
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{| border=1
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''Older news is [[Computer History Wiki:Older News|here]].''
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! Register !! Abbreviation !! Address
 
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|-
 
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|Look Ahead Register              || RCLA || 777440
 
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|-
 
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|Disk Address Register            || RCDA || 777442
 
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|-
 
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|Disk Error Status Register      || RCER || 777444
 
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|-
 
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|Disk Control and Status Register || RCCS || 777446
 
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|-
 
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|Word Count Register              || RCWC || 777450
 
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|-
 
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|Current Address Register        || RCCA || 777452
 
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|-
 
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|Maintenance Register            || RCMN || 777454
 
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|-
 
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|Data Buffer Register            || RCDB || 777456
 
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|}
 
  
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===777440: Look Ahead Register (RCLA)===
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<!-- Always move old news to Computer_History_Wiki:Older_News !!!! -->
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{{16bit-header}}
 
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| Bad Address || colspan=2 | Unused || colspan=2 | Unit Number || colspan=5 | Track Number || colspan=6 | Sector Address
 
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{{16bitoctal-bitout}}
 
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===777442: Disk Address Register (RCDA)===
 
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{{16bit-header}}
 
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| colspan=3 | Unused || colspan=2 | Unit Number || colspan=5 | Track Number || colspan=6 | Sector Address
 
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{{16bitoctal-bitout}}
 
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===777444: Disk Error Status Register (RCES)===
 
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{{16bit-header}}
 
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| Data Late || Block Check || Data Sync || NXM || colspan=2 | Unused || Timing Track || Unused || Address Parity || Sync Address || Disk Overflow || Missed Xfer || colspan=4 | Unused
 
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{{16bit-bitout}}
 
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===777446: Disk Control and Status Register (RCCS)===
 
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{{16bit-header}}
 
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| 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
 
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{{16bit-bitout}}
 
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===777450: Word Count Register (RCWC)===
 
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{{16bit-header}}
 
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| colspan=16 | WC15 <---> WC00
 
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{{16bitoctal-bitout}}
 
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===777452: Current Address Register (RCCA)===
 
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{{16bit-header}}
 
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| colspan=15 | BA15 <---> BA01 || Unused
 
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{{16bitoctal-bitout}}
 
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===777454: Maintenance Register (RCMN)===
 
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{{16bit-header}}
 
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| 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
 
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{{16bit-bitout}}
 
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===777456: Data Buffer Register (RCDB)===
 
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{{16bit-header}}
 
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| colspan=16 | DB15 <---> DB00
 
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{{16bitoctal-bitout}}
 
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[[Category:UNIBUS Storage Controllers]]
 

Revision as of 18:11, 28 December 2018

  • Documentation category - Category:Documentation has been added, and a link to it added to the Main Page. Anytime you run across a copy of a document hosted here, if it's not tagged with this category tag, please add one to it; thanks! (I know there are quite a few, I'm just too lazy to go search for them!) Jnc (talk) 19:11, 28 December 2018 (CET)
  • Categories upgrade - In an attempt to make the Uncategorized Pages list more useful, a lot of work on categories was just done. See here for details. It's probably worth glancing at the list of categories to see which ones exist now. Jnc (talk) 14:48, 17 December 2018 (CET)
    • The 'stub' and 'semi-stub' categories have gone away, because they mess up the Uncategorized Pages list; the templates will remain, though (and people should keep using them). Jnc (talk) 23:31, 18 December 2018 (CET)
  • Semi-stubs - Since we have a lot of articles that are better than pure stubs, but could still use more content, I have created a new 'semi-stub article' template for them, to display a note, etc: Template:Semi-stub. Syntax is just like 'stub': {{semi-stub}}. Jnc (talk) 16:01, 18 September 2018 (CEST)

Older news is here.


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