3090 - Revision history

RHansen: /* Microcode */

2023-03-19T10:11:00Z

Microcode

← Older revision		Revision as of 10:11, 19 March 2023
Line 33:		Line 33:

	This is version 2 of the microcode.		This is version 2 of the microcode.
			(From an early CPU card, right after prototyping. Used for training the test team in production in the basement at Skullerud)

	==References==		==References==

Tingo: /* Microcode */ add better location description

2023-03-19T08:15:19Z

Microcode: add better location description

← Older revision		Revision as of 08:15, 19 March 2023
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	The microcode for the CPU is held in two EPROMs, 27256.[[File:3090 microcode Image.png\| right\|3090 - EPROMs with microcode]]		The microcode for the CPU is held in two EPROMs, 27256.[[File:3090 microcode Image.png\| right\|3090 - EPROMs with microcode]]

	~~The chip reference designators was not visible on~~ the board, ~~so we used location references instead~~.~~Reference "G89" means that~~ the ~~chip~~ is ~~located at~~ row ~~G, between~~ column ~~8 and 9~~.		Location: the board has letters for rows (A, B, C, ...) on the left edge, and numbers (1, 2, 3, ...) at the top edge. Location of any given component on the board is given as a single letter and number (for small components) or as a series of letters and numbers (for larger components, covering more than one row and / or column).

	Dumps of the chips, made with a EPROM programmer		Dumps of the chips, made with a EPROM programmer
	* Left chip: [[File:Microcode 37932A G89.bin.bz2]]		* Left chip: [[File:Microcode 37932A G89.bin.bz2]] Location on board: G-8-9
	* right chip: [[File:Microcode 37933A G67.bin.bz2]]		* right chip: [[File:Microcode 37933A G67.bin.bz2]] Location on board: G-6-7

	This is version 2 of the microcode.		This is version 2 of the microcode.

Tingo: /* Microcode */ change to correctly labeled file for th G67 ROM, add version number

2023-03-19T08:10:54Z

Microcode: change to correctly labeled file for th G67 ROM, add version number

← Older revision		Revision as of 08:10, 19 March 2023
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	Dumps of the chips, made with a EPROM programmer		Dumps of the chips, made with a EPROM programmer
	* Left chip: [[File:Microcode 37932A G89.bin.bz2]]		* Left chip: [[File:Microcode 37932A G89.bin.bz2]]
	* right chip: [[File:Microcode ~~37932A~~ G67.bin.bz2]]		* right chip: [[File:Microcode 37933A G67.bin.bz2]]

			This is version 2 of the microcode.

	==References==		==References==

Tingo: /* Microcode */ added dumps of the microcode

2023-03-18T17:22:33Z

Microcode: added dumps of the microcode

← Older revision		Revision as of 17:22, 18 March 2023
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	== Microcode ==		== Microcode ==
	The microcode for the CPU is held in two EPROMs, 27256.[[File:3090 microcode Image.png\| right\|3090 - EPROMs with microcode]]		The microcode for the CPU is held in two EPROMs, 27256.[[File:3090 microcode Image.png\| right\|3090 - EPROMs with microcode]]

			The chip reference designators was not visible on the board, so we used location references instead.Reference "G89" means that the chip is located at row G, between column 8 and 9.

			Dumps of the chips, made with a EPROM programmer
			* Left chip: [[File:Microcode 37932A G89.bin.bz2]]
			* right chip: [[File:Microcode 37932A G67.bin.bz2]]

	==References==		==References==

Tingo: /* Microcode */ add picture of the microcode EPROMs

2023-03-18T17:09:05Z

Microcode: add picture of the microcode EPROMs

← Older revision		Revision as of 17:09, 18 March 2023
Line 24:		Line 24:

	== Microcode ==		== Microcode ==
	The microcode for the CPU is held in two EPROMs, 27256.		The microcode for the CPU is held in two EPROMs, 27256.[[File:3090 microcode Image.png\| right\|3090 - EPROMs with microcode]]

	==References==		==References==

Tingo: add a microcode section

2023-03-18T16:55:47Z

add a microcode section

← Older revision		Revision as of 16:55, 18 March 2023
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	== See also ==		== See also ==
	[[3095]] new [[ND-110 CPU]] board		[[3095]] new [[ND-110 CPU]] board

			== Microcode ==
			The microcode for the CPU is held in two EPROMs, 27256.

	==References==		==References==

Tingo: /* Introduction */ Short intro

2023-03-18T16:53:55Z

Introduction: Short intro

← Older revision		Revision as of 16:53, 18 March 2023
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	==Introduction==		==Introduction==
			This is the "old" ND-110 CPU card.

	==Switches and indicators==		==Switches and indicators==
	The following switches and indicators are on the card		The following switches and indicators are on the card

Tingo: /* References */ add reference to ND-30.008.3 EN

2018-01-14T18:13:34Z

References: add reference to ND-30.008.3 EN

← Older revision		Revision as of 18:13, 14 January 2018
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	==References==		==References==
	*{{ND-doc\|06.026.01}}		*{{ND-doc\|06.026.01}}
			*{{ND-doc\|30.008.3 EN}}, page 232

	[[Category:ND-100 hardware]]		[[Category:ND-100 hardware]]

Tingo: added "See also" section and a link to 3095, the new ND-110 CPU board

2016-10-02T16:49:41Z

added "See also" section and a link to 3095, the new ND-110 CPU board

← Older revision		Revision as of 16:49, 2 October 2016
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	==I/O Devices on the card==		==I/O Devices on the card==

			== See also ==
			[[3095]] new [[ND-110 CPU]] board

	==References==		==References==
	*{{ND-doc\|06.026.01}}		*{{ND-doc\|06.026.01}}

	[[Category:ND-100 hardware]]		[[Category:ND-100 hardware]]

Tingo: created the page

2011-12-10T11:33:02Z

created the page

New page

'''3090''' is the first ND-110 CPU board (referred to as the "old" CPU card). It contains the CPU, bus arbitration logic, memory control, cache memory and other subsystems, including the Real time clock and the I/O for the serial console.
{{Stub}}

==Introduction==
==Switches and indicators==
The following switches and indicators are on the card
Location 29J - potentiometer
Location 28J - ALD edge switch
Location 26J - baud rate edge switch
Location 21J - self test lamp (green)
Location 19J - running lamp (red)
Location 15J - cache on lamp (red)
Location 13J - cache on/off switch

==Connectors==
The A and B connectors are used for I/O, the C connector is used for the [[ND-100 Bus]].

==I/O Devices on the card==
==References==
*{{ND-doc|06.026.01}}

[[Category:ND-100 hardware]]