KEF11-A floating point chip - Revision history

McNeight: This page was the only one to reference a "23-003C7-AA" on Google, while the picture at the top of the page shows a 23-203C7-AA part number on the IC.

2025-09-18T15:09:40Z

This page was the only one to reference a "23-003C7-AA" on Google, while the picture at the top of the page shows a 23-203C7-AA part number on the IC.

Jnc: /* Further reading */ +11/23 Floating Point Compatibility

2024-07-25T14:42:12Z

‎Further reading: +11/23 Floating Point Compatibility

Jnc: Avoid redir

2021-03-12T15:43:58Z

Avoid redir

Jnc: +link

2021-01-01T02:21:49Z

+link

Jnc: add image

2019-01-23T14:49:23Z

add image

Jnc: typo

2018-11-18T02:53:34Z

typo

Jnc: Correct supposition on float registers in MMU chip

2018-11-01T15:07:55Z

Correct supposition on float registers in MMU chip

Jnc: Add part numbers for carrier

2017-11-17T21:41:01Z

Add part numbers for carrier

Jnc: Fix MMU name error

2016-12-25T15:10:13Z

Fix MMU name error

Jnc: link kdf11 CPUs

2016-11-15T00:15:24Z

link kdf11 CPUs

@@ Line 5: / Line 5: @@
 The KEF11-A requires the [[KTF11-A memory management chip]], since the floating point [[register]]s are actually in the KTF11-A (the reason why is unknown; although the KEF11-A is microcode, there are enough pins for both the data [[bus]], and the microcode bus).
-The KEF11-A is another dual carrier: the chips on it are [[DEC part number]]s 23-002C7-AA and 23-003C7-AA (only the A revision of both has been seen). The entire carrier is DEC part # 57-00001-01-A1 (although 57-00001-00 is occasionally seen - but with the same chip versions as the -01).
+The KEF11-A is another dual carrier: the chips on it are [[DEC part number]]s 23-002C7-AA and 23-203C7-AA (only the A revision of both has been seen). The entire carrier is DEC part # 57-00001-01-A1 (although 57-00001-00 is occasionally seen - but with the same chip versions as the -01).
 ==Further reading==

← Older revision		Revision as of 14:42, 25 July 2024
Line 6:		Line 6:

	The KEF11-A is another dual carrier: the chips on it are [[DEC part number]]s 23-002C7-AA and 23-003C7-AA (only the A revision of both has been seen). The entire carrier is DEC part # 57-00001-01-A1 (although 57-00001-00 is occasionally seen - but with the same chip versions as the -01).		The KEF11-A is another dual carrier: the chips on it are [[DEC part number]]s 23-002C7-AA and 23-003C7-AA (only the A revision of both has been seen). The entire carrier is DEC part # 57-00001-01-A1 (although 57-00001-00 is occasionally seen - but with the same chip versions as the -01).
		+
		+	==Further reading==
		+
		+	* ''11/23 Floating Point Compatibility'', [[MicroNote]] #066

	[[Category: PDP-11 Processors]]		[[Category: PDP-11 Processors]]

@@ Line 5: / Line 5: @@
 The KEF11-A requires the [[KTF11-A memory management chip]], since the floating point [[register]]s are actually in the KTF11-A (the reason why is unknown; although the KEF11-A is microcode, there are enough pins for both the data [[bus]], and the microcode bus).
-The KEF11-A is another dual carrier: the chips on it are [[DEC part numbers]] 23-002C7-AA and 23-003C7-AA (only the A revision of both has been seen). The entire carrier is DEC part # 57-00001-01-A1 (although 57-00001-00 is occasionally seen - but with the same chip versions as the -01).
+The KEF11-A is another dual carrier: the chips on it are [[DEC part number]]s 23-002C7-AA and 23-003C7-AA (only the A revision of both has been seen). The entire carrier is DEC part # 57-00001-01-A1 (although 57-00001-00 is occasionally seen - but with the same chip versions as the -01).
 [[Category: PDP-11 Processors]]

@@ Line 5: / Line 5: @@
 The KEF11-A requires the [[KTF11-A memory management chip]], since the floating point [[register]]s are actually in the KTF11-A (the reason why is unknown; although the KEF11-A is microcode, there are enough pins for both the data [[bus]], and the microcode bus).
-The KEF11-A is another dual carrier: the chips being DEC part # 23-002C7-AA and DEC part # 23-003C7-AA (only the A revision of both has been seen). The entire carrier is DEC part # 57-00001-01-A1 (although 57-00001-00 is occasionally seen - but with the same chip versions as the -01).
+The KEF11-A is another dual carrier: the chips on it are [[DEC part numbers]] 23-002C7-AA and 23-003C7-AA (only the A revision of both has been seen). The entire carrier is DEC part # 57-00001-01-A1 (although 57-00001-00 is occasionally seen - but with the same chip versions as the -01).
 [[Category: PDP-11 Processors]]

← Older revision		Revision as of 14:49, 23 January 2019
Line 1:		Line 1:
		+	[[Image:KEF11-A.jpg\|thumb\|right\|250px\|KEF11-A chip installed]]
		+
	The '''KEF11-A floating point chip''' is an optional [[integrated circuit\|chip]] for [[KDF11 CPUs\|PDP-11 CPUs]] which use the [[F-11 chip set]]. It contains [[microcode]] to implement the [[FP11 floating point\|FP11]]-compatible [[floating point]].		The '''KEF11-A floating point chip''' is an optional [[integrated circuit\|chip]] for [[KDF11 CPUs\|PDP-11 CPUs]] which use the [[F-11 chip set]]. It contains [[microcode]] to implement the [[FP11 floating point\|FP11]]-compatible [[floating point]].

@@ Line 1: / Line 1: @@
-The '''KEF11-A floating point chip''' is an optional chip for [[KDF11 CPUs|PDP-11 CPUs]] which use the [[F-11 chip set]]. It contains [[microcode]] tp implement the [[FP11 floating point|FP11]]-compatible [[floating point]].
+The '''KEF11-A floating point chip''' is an optional [[integrated circuit|chip]] for [[KDF11 CPUs|PDP-11 CPUs]] which use the [[F-11 chip set]]. It contains [[microcode]] to implement the [[FP11 floating point|FP11]]-compatible [[floating point]].
-The KEF11-A requires the [[KTF11-A memory management chip]], since the floating point registers are actually in the KTF11-A (the reason why is unknown; although the KEF11-A is microcode, there are enough pins for both the data [[bus]], and the microcode bus).
+The KEF11-A requires the [[KTF11-A memory management chip]], since the floating point [[register]]s are actually in the KTF11-A (the reason why is unknown; although the KEF11-A is microcode, there are enough pins for both the data [[bus]], and the microcode bus).
 The KEF11-A is another dual carrier: the chips being DEC part # 23-002C7-AA and DEC part # 23-003C7-AA (only the A revision of both has been seen). The entire carrier is DEC part # 57-00001-01-A1 (although 57-00001-00 is occasionally seen - but with the same chip versions as the -01).
 [[Category: PDP-11 Processors]]

← Older revision		Revision as of 21:41, 17 November 2017
Line 3:		Line 3:
	The KEF11-A requires the [[KTF11-A memory management chip]], since the floating point registers are actually in the KTF11-A (probably because the KEF11-A is microcode, and there aren't enough pins for both the data bus, and the microcode bus).		The KEF11-A requires the [[KTF11-A memory management chip]], since the floating point registers are actually in the KTF11-A (probably because the KEF11-A is microcode, and there aren't enough pins for both the data bus, and the microcode bus).

−	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).	+	The KEF11-A is another dual carrier: the chips being DEC part # 23-002C7-AA and DEC part # 23-003C7-AA (only the A revision of both has been seen). The entire carrier is DEC part # 57-00001-01-A1 (although 57-00001-00 is occasionally seen - but with the same chip versions as the -01).

@@ Line 1: / Line 1: @@
 The '''KEF11-A floating point chip''' is an optional chip for [[KDF11 CPUs|PDP-11 CPUs]] which use the [[F-11 chip set]]. It implemented the [[FP11 floating point|FP11]]-compatible [[floating point]].
-The KEF11-A requires the [[KTJ11-A memory management chip]], 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).
+The KEF11-A requires the [[KTF11-A memory management chip]], since the floating point registers are actually in the KTF11-A (probably because the KEF11-A is microcode, and there aren't enough pins for both the data bus, and the microcode bus).
 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).