Difference between revisions of "F-11 chip set"

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The main CPU was implemented in two chips (carried on a single DIP carrier): the data paths chip (DC302, DEC part # 21-15541-Ax, where x is a capital letter giving the revision; B is the most common, although C has been seen), which contains the registers, ALU, etc; and the control chip (DC303, DEC part # 23-001C7-Ax, although only the A revision has been seen), which contains microcode and a small amount of miscellaneous logic.
 
The main CPU was implemented in two chips (carried on a single DIP carrier): the data paths chip (DC302, DEC part # 21-15541-Ax, where x is a capital letter giving the revision; B is the most common, although C has been seen), which contains the registers, ALU, etc; and the control chip (DC303, DEC part # 23-001C7-Ax, although only the A revision has been seen), which contains microcode and a small amount of miscellaneous logic.
  
Unlike the first microprocessor implementation (the [[LSI-11]]), the F-11 chip set implemented the full PDP-11 architecture, including the optional [[KTJ11-A memory management chip]] which implemented standard [[PDP-11 Memory Management]], and the optional [[KEF11-A floating point chip]] which implemented the [[FP11 floating point|FP11]]-compatible floating point. (The KEF11-A requires the KTJ11-A, since the floating point registers are actually in the KTJ11-A; probably because the KEF11-A is microcode, and there aren't enough pins for both the data bus, and the microcode bus.) There is also a 6-chip carrier implementing the PDP-11 Commercial Instruction Set (CIS).
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Unlike the first microprocessor implementation (the [[LSI-11]]), the F-11 chip set implemented the full [[PDP-11 architecture]], including the optional [[KTJ11-A memory management chip]] which implemented standard [[PDP-11 Memory Management]], and the optional [[KEF11-A floating point chip]] which implemented the [[FP11 floating point|FP11]]-compatible f[[floating point]].
  
The KTJ11-A chip was the DC304, DEC part # 21-15542-0n (where n is a digit giving the revision; 0 and 1 have been seen); the KEF11-A is another dual carrier (with the chips being DEC part # 23-002C7-Ax and DEC part # 23-003C7-Ax; only the A revision of both has been seen).
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(The KEF11-A requires the KTJ11-A, since the floating point registers are actually in the KTJ11-A; probably because the KEF11-A is microcode, and there aren't enough pins for both the data bus, and the microcode bus.) There is also a 6-chip carrier implementing the PDP-11 Commercial Instruction Set (CIS).
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The KTJ11-A chip was the DC304, DEC part # 21-15542-0n (where n is a digit giving the revision; 0 and 1 have been seen).
  
 
==External links==
 
==External links==

Revision as of 01:17, 15 November 2016

The F-11 chip set (code-named 'Fonz') was DEC's second microprocessor implementation of the PDP-11 architecture. It was used in the KDF11 CPUs.

The main CPU was implemented in two chips (carried on a single DIP carrier): the data paths chip (DC302, DEC part # 21-15541-Ax, where x is a capital letter giving the revision; B is the most common, although C has been seen), which contains the registers, ALU, etc; and the control chip (DC303, DEC part # 23-001C7-Ax, although only the A revision has been seen), which contains microcode and a small amount of miscellaneous logic.

Unlike the first microprocessor implementation (the LSI-11), the F-11 chip set implemented the full PDP-11 architecture, including the optional KTJ11-A memory management chip which implemented standard PDP-11 Memory Management, and the optional KEF11-A floating point chip which implemented the FP11-compatible ffloating point.

(The KEF11-A requires the KTJ11-A, since the floating point registers are actually in the KTJ11-A; probably because the KEF11-A is microcode, and there aren't enough pins for both the data bus, and the microcode bus.) There is also a 6-chip carrier implementing the PDP-11 Commercial Instruction Set (CIS).

The KTJ11-A chip was the DC304, DEC part # 21-15542-0n (where n is a digit giving the revision; 0 and 1 have been seen).

External links