M105 Address Selector - Revision history

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[[Image:M105AddressSelector.jpg|250px|thumb|right|M105 FLIP CHIP]]

The '''M105 Address Selector''' is a [[Digital Equipment Corporation|DEC]] [[FLIP CHIP]] which implements the '[[address]] selection' function (i.e. detecting when a particular [[bus]] cycle is destined for a particular [[peripheral|device]]) for the [[UNIBUS]].

It was used, along with an [[M782 Interrupt Control]], in early [[PDP-11]] [[device controller]]s which plugged into an [[Small Peripheral Controller|SPC]] slot. It was also used in a number of early devices which were built out of a custom [[backplane]] and a large number of FLIP CHIPs, such as the [[RK11|RK11-C]]. Some later devices which no longer used a large number of small Flip Chips (such as the [[TM11|TMB11]]) also used it.

The board contained a number of [[jumper]]s which could be use to set the address to be recognized; the jumpers apply to UNIBUS address [[bit]]s 3-12. The M105 recognizes any address within a eight byte block; if a device needs more than 4 [[word]] registers, the M105 cannot accomplish that.

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 ==External links==
-* [http://www.bitsavers.org/pdf/dec/pdp11/handbooks/PDP11_PeripheralsHbk_1972.pdf pdp11 peripherals and interfacing handbook (1972 edition)] - the M105 is covered on pp. 213-214 (pp. 223-224 of the PDF)
+* [http://www.bitsavers.org/pdf/dec/pdp11/handbooks/PDP11_PeripheralsHbk_1972.pdf pdp11 peripherals and interfacing handbook (1972 edition)] - the M105 is covered on pp. 213-215 (pp. 223-225 of the PDF)
 * [http://so-much-stuff.com/pdp8/flipchip/modules.htm FlipChip Modules] - Images and engineering drawings for FLIP CHIP modules
 ** [http://svn.so-much-stuff.com/svn/trunk/Eagle/projects/DEC/Mxxx/M105/ M105]

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 [[Category: UNIBUS]]
 [[Category: DEC Boards]]

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 The '''M105 Address Selector''' is a [[Digital Equipment Corporation|DEC]] [[FLIP CHIP]] which implements the '[[address]] selection' function (i.e. detecting when a particular [[bus]] cycle is destined for a particular [[peripheral|device]]) for the [[UNIBUS]].
-It was used, along with an [[M782 Interrupt Control]], in early [[PDP-11]] [[device controller]]s which plugged into an [[Small Peripheral Controller|SPC]] slot. It was also used in a number of early devices which were built out of a custom [[backplane]] and a large number of FLIP CHIPs, such as the [[RK11|RK11-C]]. Some later devices which no longer used a large number of small Flip Chips (such as the [[TM11|TMB11]]) also used it.
+It was used, along with an [[M782 Interrupt Control]], in early [[PDP-11]] [[device controller]]s which plugged into an [[Small Peripheral Controller|SPC]] slot. It was also used in a number of early devices which were built out of a custom [[backplane]] and a large number of FLIP CHIPs, such as the [[RK11-C disk controller|RK11-C]]. Some later devices which no longer used a large number of small Flip Chips (such as the [[TM11 magtape controller|TMB11]]) also used it.
 The board contained a number of [[jumper]]s which could be use to set the address to be recognized; the jumpers apply to UNIBUS address [[bit]]s 3-12. The M105 recognizes any address within a eight byte block; if a device needs more than 4 [[word]] [[register]]s, the M105 cannot accomplish that.

← Older revision		Revision as of 23:52, 13 December 2018
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		+	[[Category: UNIBUS]]
		+	[[Category: DEC Boards]]