Difference between revisions of "FP11-A Floating-Point Processor"
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The '''FP11-A Floating-Point Processor''' is the optional [[hardware]] [[floating point]] unit for the [[PDP-11/34A]] ([[KD11-EA CPU|KD11-EA]] [[Central Processing Unit|CPU]]). It supports the full [[PDP-11]] [[FP11 floating point]]. | The '''FP11-A Floating-Point Processor''' is the optional [[hardware]] [[floating point]] unit for the [[PDP-11/34A]] ([[KD11-EA CPU|KD11-EA]] [[Central Processing Unit|CPU]]). It supports the full [[PDP-11]] [[FP11 floating point]]. | ||
| − | It consists of a single [[DEC card form factor|hex]] board, the M8267. Its connections to the KD11-EA include two [[over the back | + | It consists of a single [[DEC card form factor|hex]] board, the M8267. Its connections to the KD11-EA include two [[over the back]] connectors; a 20-pin connector to the M8265 card of the KD11-EA, and a 10 pin connector to the M8266 card. (This was because the [[PDP-11/34]] could be field-upgraded from a [[KD11-E CPU]], which did not support the floating point unit, to a KD11-EA, which did - but the original [[DD11-P backplane]] was retained.) |
The latter over-the-top connector uses the connectors on the M8266 card which normally hold the maintenance cables to the [[KY11-LB Programmer's Console]]; in systems with a KY11-LB, the cables to the console will now connect to the M8267 card. (This is all necessitated because the FP11-A needs access to signals carried over the maintenance cables.) | The latter over-the-top connector uses the connectors on the M8266 card which normally hold the maintenance cables to the [[KY11-LB Programmer's Console]]; in systems with a KY11-LB, the cables to the console will now connect to the M8267 card. (This is all necessitated because the FP11-A needs access to signals carried over the maintenance cables.) | ||
Revision as of 04:04, 14 June 2020
The FP11-A Floating-Point Processor is the optional hardware floating point unit for the PDP-11/34A (KD11-EA CPU). It supports the full PDP-11 FP11 floating point.
It consists of a single hex board, the M8267. Its connections to the KD11-EA include two over the back connectors; a 20-pin connector to the M8265 card of the KD11-EA, and a 10 pin connector to the M8266 card. (This was because the PDP-11/34 could be field-upgraded from a KD11-E CPU, which did not support the floating point unit, to a KD11-EA, which did - but the original DD11-P backplane was retained.)
The latter over-the-top connector uses the connectors on the M8266 card which normally hold the maintenance cables to the KY11-LB Programmer's Console; in systems with a KY11-LB, the cables to the console will now connect to the M8267 card. (This is all necessitated because the FP11-A needs access to signals carried over the maintenance cables.)
| v • d • e PDP-11 Computers and Peripherals |
|---|
| UNIBUS PDP-11s - PDP-11/20 • PDP-11/15 • PDP-11/35 • PDP-11/40 • PDP-11/45 • PDP-11/50 • PDP-11/55 • PDP-11/70 PDP-11/05 • PDP-11/10 • PDP-11/04 • PDP-11/34 • PDP-11/60 • PDP-11/44 • PDP-11/24 • PDP-11/84 • PDP-11/94 QBUS PDP-11s - PDP-11/03 • PDP-11/23 • PDP-11/23+ • MicroPDP-11/73 • MicroPDP-11/53 • MicroPDP-11/83 • MicroPDP-11/93 QBUS CPUs: LSI-11 • LSI-11/2 • KDF11-A • KDF11-B • KDJ11-A • KDJ11-B • KDJ11-D • KDJ11-E Buses: UNIBUS • UNIBUS map • SPC • MUD • EUB • QBUS • CD interconnect • PMI Also: PDP-11 architecture • PDP-11 Extended Instruction Set • FP11 floating point • PDP-11 Memory Management |
| UNIBUS CPUs: KA11 • KC11 • KB11-A • KB11-B • KB11-C • KB11-D • KD11-A • KD11-B • KD11-D • KD11-E • KD11-EA • KD11-K • KD11-Z • KDF11-U
Co-processors: FP11-A • FP11-B • FP11-C • FP11-E • FP11-F • KE44-A • FPF11 Chips: LSI-11 • KEV11-A • KEV11-B • KEV11-C • F-11 • KEF11-A • KTF11-A • T-11 • J-11 • FPJ11 CPU options: KE11-E • KE11-F • KJ11-A • KT11-C • KT11-D • KK11-A • KK11-B • KT24 • KTJ11-B Rare CPU options: KS11 Memory Protection and Relocation option • KT11-B Paging Option • KUV11 Writeable Control Store Front panels: KY11-A • KY11-D • KY11-J • KY11-LA • KY11-LB • KY11-P More on buses: UNIBUS and QBUS termination • Bus Arbitration on the Unibus and QBUS • CTI BUS PDT-11s - PDT-11/110 • PDT-11/130 • PDT-11/150 CTI PDP-11s - PRO-325 • PRO-350 • PRO-380 Other: FIS floating point • PDP-11 Commercial Instruction Set • PDP-11 stacks • PDP-11 family differences |
