KDF11 CPUs: Difference between revisions
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There are several single-board CPUs which all use the 'Fonz' [[F-11 chip set]]: | There are several single-[[printed circuit board|board]] [[PDP-11]] [[Central Processing Unit|CPUs]] which all use the 'Fonz' [[F-11 chip set]]: | ||
*[[KDF11-A CPU]] - M8186 - [[QBUS]] [[DEC card form factor|dual]]-width CPU used in the [[PDP-11/23]] | *[[KDF11-A CPU]] - M8186 - [[QBUS]] [[DEC card form factor|dual]]-width CPU used in the [[PDP-11/23]] | ||
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*[[KDF11-U CPU]] - M7133 - [[UNIBUS]] hex-width CPU used in the [[PDP-11/24]] | *[[KDF11-U CPU]] - M7133 - [[UNIBUS]] hex-width CPU used in the [[PDP-11/24]] | ||
Like the [[LSI-11]] models, as a cost-reduction measure they do not have a front panel to control them; instead, when the | Like the [[LSI-11]] models, as a cost-reduction measure they do not have a [[front panel]] to control them; instead, when the CPU is halted, specialized [[microcode]] used the main [[asynchronous serial line]] as a operating console. The command set is named Octal Debugging Technique (ODT); there are commands to read and write [[main memory]], start the CPU, etc. The main serial interface is normally configured so that when the CPU is running, sending a [[asynchronous serial line|break]] on the console serial line [[halt]]s the CPU. | ||
==Floating point== | ==Floating point== | ||
All the KDF11 CPUs have two choices for floating point support (full PDP-11 [[FP11 floating point]]): a on-board single chip, the [[KEF11-A floating point chip]], which implements floating point using microcode; and a higher-performance separate quad board, the [[FPF11]] (M8188). | All the KDF11 CPUs have two choices for [[floating point]] support (full PDP-11 [[FP11 floating point]]): a on-board single [[integrated circuit|chip]], the [[KEF11-A floating point chip]], which implements floating point using microcode; and a higher-performance separate [[DEC card form factor|quad]] board, the [[FPF11]] (M8188). | ||
The FPF11 communicates with the KDF11 via a cable that plugs into the socket on the KDF11 where the KEF11-A is installed; is unusual that it can plug into either a QBUS or UNIBUS backplane, since it only draws power from the backplane - all | The FPF11 communicates with the KDF11 via a [[flat cable]] that plugs into the [[chip socket]] on the KDF11 where the KEF11-A is installed; is unusual that it can plug into either a QBUS or UNIBUS [[backplane]], since it only draws power from the backplane - all [[signal]]s come over the cable to the KDF11. | ||
{{PDP-11}} | {{PDP-11}} | ||
[[Category: PDP-11 Processors]] | [[Category: PDP-11 Processors]] | ||
Revision as of 13:31, 1 November 2018
There are several single-board PDP-11 CPUs which all use the 'Fonz' F-11 chip set:
- KDF11-A CPU - M8186 - QBUS dual-width CPU used in the PDP-11/23
- KDF11-B CPU - M8189 - QBUS quad-width CPU used in the PDP-11/23+
- KDF11-U CPU - M7133 - UNIBUS hex-width CPU used in the PDP-11/24
Like the LSI-11 models, as a cost-reduction measure they do not have a front panel to control them; instead, when the CPU is halted, specialized microcode used the main asynchronous serial line as a operating console. The command set is named Octal Debugging Technique (ODT); there are commands to read and write main memory, start the CPU, etc. The main serial interface is normally configured so that when the CPU is running, sending a break on the console serial line halts the CPU.
Floating point
All the KDF11 CPUs have two choices for floating point support (full PDP-11 FP11 floating point): a on-board single chip, the KEF11-A floating point chip, which implements floating point using microcode; and a higher-performance separate quad board, the FPF11 (M8188).
The FPF11 communicates with the KDF11 via a flat cable that plugs into the chip socket on the KDF11 where the KEF11-A is installed; is unusual that it can plug into either a QBUS or UNIBUS backplane, since it only draws power from the backplane - all signals come over the cable to the KDF11.
| 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 |
