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Difference between revisions of "amd/am2900"
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{{amd title|Am2900}}
 
{{amd title|Am2900}}
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The '''AMD Am2900''' is a [[microprocessor family|family]] of [[4-bit architecture|4-bit]] [[bit-slice microprocessor|bit-slice]] chips designed by [[Advanced Micro Devices]] and introduced to the market in August [[1975]]. Each component represents an individual unit in a microprocessor. Designed to be flexible and expandable, those chips were capable of emulating a large number of existing systems. Made in bipolar technology allowed for higher speeds (8.3-12Mhz, later up to 32). Its flexibility, higher speed, unusually large amount of 2nd sources, and good marketing allowed AMD to dominate the [[bit-slice microprocessor|bit-slice]] market. To date, the Am2900 family is used as the de facto baseline for bit-slice design.
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{{ic family
 +
| title            = AMD Am2900
 +
| image            = Ic-photo-AMD--AM2903ADCB-(AM2900).png
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| caption          = Am2903 Enhanced ALU
 +
| developer        = AMD
 +
| manufacturer      = AMD
 +
| production start  = 1975
 +
| production end    = 1998
 +
| arch              = 4-bit bit-slice
 +
| word              = 4-bit
 +
| proc              = <!-- process, e.g. "8 μm"                                      -->
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| tech              = Bipolar
 +
| clock            = <!-- clock speed, e.g. "740 kHz"  IF RANGE, USE PARAM BELOW!  -->
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| clock min        = 1 MHz
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| clock max        = 31 MHz
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| package          = DIP40
 +
| package 2        = DIP42
 +
}}
 +
The '''AMD Am2900''' is a [[microprocessor family|family]] of [[4-bit architecture|4-bit]] [[bit-slice microprocessor|bit-slice]] chips designed by [[Advanced Micro Devices]] and introduced to the market in August [[1975]]. Each component represents an individual unit in a microprocessor. Designed to be flexible and expandable, those chips were capable of emulating a large number of existing systems. Made in bipolar technology allowed for higher speeds (1-20Mhz, later up to 32). Its flexibility, higher speed, unusually large amount of 2nd sources, and good marketing allowed AMD to dominate the [[bit-slice microprocessor|bit-slice]] market. To date, the Am2900 family is used as the de facto baseline for bit-slice design.
  
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{| class="wikitable" style="float: right;"
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== 2nd sources ==
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The ''Am2900'' had a large number of 2nd sources:
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{| class="wikitable" style="border-collapse:collapse;"
 +
! 75 || 76 || 77 || 78 || 79 || 80 || 81 || 82 || 83 || 84 || 85 || 86 || 87 || 88 || 89 || 90 || 91 || 92 || 93 || 94 || 95 || 96
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|-
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| colspan="9" style="background: #E8E8E8;" | [[Motorola]]
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|-
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| colspan="22" style="background: #E8E8E8;" | [[Thomson-CSF]]
 +
|-
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| colspan="7" style="background: #E8E8E8;" | [[Raytheon]]
 +
|-
 +
| colspan="2" style="border: none;" | || colspan="15" style="background: #E8E8E8;" | [[National]]
 +
|-
 +
| colspan="3" style="border: none;" | || colspan="6" style="background: #E8E8E8;" | [[Fairchild]]
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|-
 +
| colspan="3" style="border: none;" | || colspan="3" style="background: #E8E8E8;" | [[Signetics]]
 +
|-
 +
| colspan="3" style="border: none;" | || colspan="6" style="background: #E8E8E8;" | [[NEC]]
 +
|-
 +
| colspan="5" style="border: none;" | || colspan="2" style="background: #E8E8E8;" | [[OKI]]
 +
|-
 +
| colspan="10" style="border: none;" | || colspan="7" style="background: #E8E8E8;" | [[Cypress]]
 +
|-
 +
| colspan="11" style="border: none;" | || colspan="3" style="background: #E8E8E8;" | [[Vitesse]]
 +
|-
 +
| colspan="11" style="border: none;" | || colspan="11" style="background: #E8E8E8;" | [[Elektronika]]
 +
|}
 +
 
 +
== Members ==
 +
{| class="wikitable"
 
! colspan="2" | Family Members
 
! colspan="2" | Family Members
 
|-
 
|-
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|-
 
|-
 
| {{amd|AM2965}}<br />{{amd|AM2966}} || Octal dynamic memory driver
 
| {{amd|AM2965}}<br />{{amd|AM2966}} || Octal dynamic memory driver
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|}
 
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== 2nd sources ==
 
−
The ''Am2900'' had a large number of 2nd sources:
 
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{| class="wikitable" style="border-collapse:collapse;"
 
−
! 75 || 76 || 77 || 78 || 79 || 80 || 81 || 82 || 83 || 84 || 85 || 86 || 87 || 88 || 89 || 90 || 91 || 92 || 93 || 94 || 95 || 96
 
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|-
 
−
| colspan="9" style="background: #E8E8E8;" | [[Motorola]]
 
−
|-
 
−
| colspan="22" style="background: #E8E8E8;" | [[Thomson-CSF]]
 
−
|-
 
−
| colspan="7" style="background: #E8E8E8;" | [[Raytheon]]
 
−
|-
 
−
| colspan="2" style="border: none;" | || colspan="15" style="background: #E8E8E8;" | [[National]]
 
−
|-
 
−
| colspan="3" style="border: none;" | || colspan="6" style="background: #E8E8E8;" | [[Fairchild]]
 
−
|-
 
−
| colspan="3" style="border: none;" | || colspan="3" style="background: #E8E8E8;" | [[Signetics]]
 
−
|-
 
−
| colspan="3" style="border: none;" | || colspan="6" style="background: #E8E8E8;" | [[NEC]]
 
−
|-
 
−
| colspan="5" style="border: none;" | || colspan="2" style="background: #E8E8E8;" | [[OKI]]
 
−
|-
 
−
| colspan="10" style="border: none;" | || colspan="7" style="background: #E8E8E8;" | [[Cypress]]
 
−
|-
 
−
| colspan="11" style="border: none;" | || colspan="3" style="background: #E8E8E8;" | [[Vitesse]]
 
−
|-
 
−
| colspan="11" style="border: none;" | || colspan="11" style="background: #E8E8E8;" | [[Elektronika]]
 
 
|}
 
|}
  

Revision as of 12:37, 17 January 2016

AMD Am2900
Ic-photo-AMD--AM2903ADCB-(AM2900).png
Am2903 Enhanced ALU
Developer AMD
Manufacturer AMD
Production 1975-1998
Architecture 4-bit bit-slice
Word size 4-bit
"-bit" is not declared as a valid unit of measurement for this property.
Technology Bipolar
Clock 1 MHz-31 MHz
Package DIP40, DIP42

The AMD Am2900 is a family of 4-bit bit-slice chips designed by Advanced Micro Devices and introduced to the market in August 1975. Each component represents an individual unit in a microprocessor. Designed to be flexible and expandable, those chips were capable of emulating a large number of existing systems. Made in bipolar technology allowed for higher speeds (1-20Mhz, later up to 32). Its flexibility, higher speed, unusually large amount of 2nd sources, and good marketing allowed AMD to dominate the bit-slice market. To date, the Am2900 family is used as the de facto baseline for bit-slice design.

2nd sources

The Am2900 had a large number of 2nd sources:

75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96
Motorola
Thomson-CSF
Raytheon
National
Fairchild
Signetics
NEC
OKI
Cypress
Vitesse
Elektronika

Members

Family Members
Part Description
AM2901
AM2901A
AM2901B 		4-bit ALU
AM2902 Carry-lookahead generator
AM2903
AM2903A 		4-bit ALU, Enhanced version of the 2901
AM2904 Status and shift control unit
AM2905 Quad 2-input bus transceiver
AM2906 Quad 2-input bus transceiver with parity
AM2907
AM2908 		Quad bus transceiver with interface logic
AM2909
AM2909A
AM2911 		4-bit-slice address sequencer
AM2910 12-bit address sequencer
AM2912 Quad bus transceiver
AM2913 Priority interrupt expander
AM2914 Priority interrupt controller
AM2915
AM2916
AM2917 		Quad 3-state bus transceiver
AM2918
AM29LS18 		Quad D register
AM2919 Quad register
AM2920 Octal D flip-flip register
AM2921 1-to-8 decoder
AM2922
AM2923 		8-input MUX
AM2924 3-to-8 decoder
AM2925 Clock generator
AM2926
AM2929 		3-state quad bus driver
AM2927
AM2928 		Quad 3-state Bus Transceiver
AM2930 Program control unit
AM2932 Program control unit for push/pop stack
AM2940 DMA Address generator
AM2940 Timer/Counter/DMA Address generator
AM2946
AM2947
AM2948
AM2949 		Octal 3-state bidirectional bus transceiver
AM2950
AM2951 		Bidirectional I/O Port
AM2954
AM2955 		Octal registers
AM2956
AM2957 		Octal latches
AM2958
AM2959 		Octal buffer
AM2960 16-bit error detection and correction unit
AM2961
AM2962 		4-bit error correction bus buffer
AM2964 Dynamic memory controller
AM2965
AM2966 		Octal dynamic memory driver

Design

The family includes two 4-bit ALUs - 2901 and a 2903. The AM2901/A was the original chip designed, supporting 8 different basic operations. The AM2903/A was an enhanced version designed a bit later which included 7 additional operations. The slices can be stacked to produce 8, 12, or 16 data paths and memory addresses for use in larger programs.

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