TA11 Magnetic Tape Cassette controller - Revision history

Jnc: /* External links */ +TA11 engineering drawings

2023-01-31T23:55:31Z

‎External links: +TA11 engineering drawings

Jnc: Formal DEC name

2021-08-26T02:18:18Z

Formal DEC name

Jnc: /* External links */ +tech manual

2021-08-25T06:24:29Z

‎External links: +tech manual

Jnc: +links, typo

2019-04-24T12:38:13Z

+links, typo

Jnc: +cat

2018-12-16T22:10:35Z

+cat

Jnc: typo

2017-12-18T10:59:15Z

typo

Jnc: Pretty bland, but covers it

2017-12-18T10:58:32Z

Pretty bland, but covers it

New page

The '''TA11 Magnetic Tape Cassette controller''' is the [[UNIBUS]] controller for the '''TA11 Magnetic Tape Cassette System''', which includes a controller and a [[TU60 Dual DECasetter Transport]], which uses Phillips-type tape cassettes holding a specially formulated tape.

The TA11 itself is a [[DEC card form factor|quad]] board, the M7892, which plugs into an [[Small Peripheral Controller|SPC]] slot; a pair of [[BC08-S]] [[flat cables]] which connect the board and drive. All data transfer is via [[programmed I/O]], one byte at a time.

==Device registers==

The TA11 has but two registers, a 'Control and Status' register and a 'Data Buffer' register.

{| border=1
! Register !! Abbreviation !! Address
|-
| Control and Status Register || TACS || 777500
|-
| Data Buffer Register || TADB || 777502
|}

===777500: Control and Status Register (TACS)===

{{16bit-header}}
| Error || Block Check || Clear Leader || Write Lock || File Gap || Timing Error || Off Line || Unit Select || Transfer Request || Interrupt Enable || Ready || Last Byte || colspan=3 | Function || Go
{{16bit-bitout}}

The functions are:

{| border=1
! Code !! Function !! Abbreviation
|-
| 0 || Write File Gap || WFG
|-
| 1 || Write || WRITE
|-
| 2 || Read || READ
|-
| 3 || Space Reverse File || SRF
|-
| 4 || Space Reverse Block || SRB
|-
| 5 || Space Forward File || SFF
|-
| 6 || Space Forward Block || SFB
|-
| 7 || Rewind || REWIND
|}

===777502: Data Buffer Register (TADB)===

{{16bit-header}}
| colspan=8 | Unused || colspan=8 | Data
{{16bit-bitout}}

← Older revision		Revision as of 23:55, 31 January 2023
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	* [http://www.bitsavers.org/www.computer.museum.uq.edu.au/pdf/DEC-11-HTACA-A-D%20TA11%20Cassette%20System%20Maintenance%20Manual.pdf TA11 cassette system maintenance manual]		* [http://www.bitsavers.org/www.computer.museum.uq.edu.au/pdf/DEC-11-HTACA-A-D%20TA11%20Cassette%20System%20Maintenance%20Manual.pdf TA11 cassette system maintenance manual]
		+	* [http://www.bitsavers.org/pdf/dec/unibus/TA11EngDwgs.pdf TA11 engineering drawings]

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

← Older revision		Revision as of 02:18, 26 August 2021
Line 1:		Line 1:
−	The '''TA11 Magnetic Tape Cassette controller''' is the [[UNIBUS]] [[device controller]] ~~for~~ the '''TA11 Magnetic Tape Cassette System''', which includes a controller and a [[TU60 ~~Dual DECasette~~ Transport]], which uses Phillips-type tape cassettes holding a specially formulated tape.	+	The '''TA11 Magnetic Tape Cassette controller''' is the [[UNIBUS]] [[device controller]] of the '''TA11 Magnetic Tape Cassette System''', which includes a controller and a [[TU60 DECasetteTape Transport]], which uses Phillips-type tape cassettes holding a specially formulated tape.

	The TA11 itself is a [[DEC card form factor\|quad]] board, the M7892, which plugs into an [[Small Peripheral Controller\|SPC]] slot; a pair of [[BC08-S]] [[flat cable]]s connect the board and drive. All data transfer is via [[programmed I/O]], one byte at a time.		The TA11 itself is a [[DEC card form factor\|quad]] board, the M7892, which plugs into an [[Small Peripheral Controller\|SPC]] slot; a pair of [[BC08-S]] [[flat cable]]s connect the board and drive. All data transfer is via [[programmed I/O]], one byte at a time.

← Older revision		Revision as of 10:59, 18 December 2017
Line 1:		Line 1:
−	The '''TA11 Magnetic Tape Cassette controller''' is the [[UNIBUS]] controller for the '''TA11 Magnetic Tape Cassette System''', which includes a controller and a [[TU60 Dual ~~DECasetter~~ Transport]], which uses Phillips-type tape cassettes holding a specially formulated tape.	+	The '''TA11 Magnetic Tape Cassette controller''' is the [[UNIBUS]] controller for the '''TA11 Magnetic Tape Cassette System''', which includes a controller and a [[TU60 Dual DECasette Transport]], which uses Phillips-type tape cassettes holding a specially formulated tape.

	The TA11 itself is a [[DEC card form factor\|quad]] board, the M7892, which plugs into an [[Small Peripheral Controller\|SPC]] slot; a pair of [[BC08-S]] [[flat cables]] which connect the board and drive. All data transfer is via [[programmed I/O]], one byte at a time.		The TA11 itself is a [[DEC card form factor\|quad]] board, the M7892, which plugs into an [[Small Peripheral Controller\|SPC]] slot; a pair of [[BC08-S]] [[flat cables]] which connect the board and drive. All data transfer is via [[programmed I/O]], one byte at a time.

@@ Line 48: / Line 48: @@
 | colspan=8 | Unused || colspan=8 | Data
 {{16bit-bitout}}
 [[Category: UNIBUS Storage Controllers]]

@@ Line 1: / Line 1: @@
-The '''TA11 Magnetic Tape Cassette controller''' is the [[UNIBUS]] controller for the '''TA11 Magnetic Tape Cassette System''', which includes a controller and a [[TU60 Dual DECasette Transport]], which uses Phillips-type tape cassettes holding a specially formulated tape.
+The '''TA11 Magnetic Tape Cassette controller''' is the [[UNIBUS]] [[device controller]] for the '''TA11 Magnetic Tape Cassette System''', which includes a controller and a [[TU60 Dual DECasette Transport]], which uses Phillips-type tape cassettes holding a specially formulated tape.
-The TA11 itself is a [[DEC card form factor|quad]] board, the M7892, which plugs into an [[Small Peripheral Controller|SPC]] slot; a pair of [[BC08-S]] [[flat cables]] which connect the board and drive. All data transfer is via [[programmed I/O]], one byte at a time.
+The TA11 itself is a [[DEC card form factor|quad]] board, the M7892, which plugs into an [[Small Peripheral Controller|SPC]] slot; a pair of [[BC08-S]] [[flat cable]]s connect the board and drive. All data transfer is via [[programmed I/O]], one byte at a time.
 ==Device registers==
-The TA11 has but two registers, a 'Control and Status' register and a 'Data Buffer' register.
+The TA11 has but two [[register]]s, a 'Control and Status' register and a 'Data Buffer' register.
 {| border=1
@@ Line 14: / Line 14: @@
 | Data Buffer Register            || TADB || 777502
 |}
 ===777500: Control and Status Register (TACS)===