Difference between revisions of "KD11-K CPU"
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* Decode (M7873) | * Decode (M7873) | ||
* Data Path (M7874) | * Data Path (M7874) | ||
| − | * KT/Cache (M7875) | + | * [[KT11|KT]]/Cache (M7875) |
* Timing (M7876) | * Timing (M7876) | ||
* Status (M7827) | * Status (M7827) | ||
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for the basic CPU, held in slots 2-7 of the backplane. | for the basic CPU, held in slots 2-7 of the backplane. | ||
| − | It provided the full [[FP11 floating point]] using microcode; as an option, the [[FP11-E Floating Point Processor]], a 4 hex board [[co-processor]] which provided a high-performance implementation, was also available; it used slots 8-11 of the backplane. | + | It provided the full [[FP11 floating point]] using [[microcode]]; as an option, the [[FP11-E Floating Point Processor]], a 4 hex board [[co-processor]] which provided a high-performance implementation, was also available; it used slots 8-11 of the backplane. |
A single slot in the backplane, slot 1, is available to hold either a User Control Store (1KW of read-write microcode), an Extended Control Store ([[ROM]] microcode), or a Diagnostic Control Store. | A single slot in the backplane, slot 1, is available to hold either a User Control Store (1KW of read-write microcode), an Extended Control Store ([[ROM]] microcode), or a Diagnostic Control Store. | ||
| Line 20: | Line 20: | ||
==Microcode== | ==Microcode== | ||
| − | It was a | + | It was a microcoded CPU, using 48-bit wide micro-words; the [[address space]] of the micro-engine was 2<sup>12</sup> words, divided into 8 blocks. The allocation of the blocks was: |
<ol start="0"> | <ol start="0"> | ||
Revision as of 16:55, 4 March 2019
The KD11-K was the CPU of the PDP-11/60. It provided the subset PDP-11 memory management, and used the UNIBUS for main memory access (although a built-in cache was standard).
It consisted of a custom 14-slot backplane, and 6 hex boards:
- uWord (M7872)
- Decode (M7873)
- Data Path (M7874)
- KT/Cache (M7875)
- Timing (M7876)
- Status (M7827)
for the basic CPU, held in slots 2-7 of the backplane.
It provided the full FP11 floating point using microcode; as an option, the FP11-E Floating Point Processor, a 4 hex board co-processor which provided a high-performance implementation, was also available; it used slots 8-11 of the backplane.
A single slot in the backplane, slot 1, is available to hold either a User Control Store (1KW of read-write microcode), an Extended Control Store (ROM microcode), or a Diagnostic Control Store.
The remaining slots, 12-14, were SPC slots.
Microcode
It was a microcoded CPU, using 48-bit wide micro-words; the address space of the micro-engine was 212 words, divided into 8 blocks. The allocation of the blocks was:
- Base instructions
- Console an Error log
- EIS, Initialization
- Floating point
- Floating point
- ECS
- ECS/UCS
- ECS/UCS
| 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 |
