Semiconductor & Computer Engineering
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The ''Am2900'' had a large number of 2nd sources: | The ''Am2900'' had a large number of 2nd sources: | ||
| − | {| class="wikitable" | + | {| 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 | ! 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" | [[Motorola]] | + | | colspan="9" style="background: #E8E8E8;" | [[Motorola]] |
|- | |- | ||
| − | | colspan="22" | [[Thomson-CSF]] | + | | colspan="22" style="background: #E8E8E8;" | [[Thomson-CSF]] |
|- | |- | ||
| − | | colspan="7" | [[Raytheon]] | + | | colspan="7" style="background: #E8E8E8;" | [[Raytheon]] |
|- | |- | ||
| − | | colspan="2" | || colspan="15" | [[National]] | + | | colspan="2" style="border: none;" | || colspan="15" style="background: #E8E8E8;" | [[National]] |
|- | |- | ||
| − | | colspan="3" | || colspan="6" | [[Fairchild]] | + | | colspan="3" style="border: none;" | || colspan="6" style="background: #E8E8E8;" | [[Fairchild]] |
|- | |- | ||
| − | | colspan="3" | || colspan="3" | [[Signetics]] | + | | colspan="3" style="border: none;" | || colspan="3" style="background: #E8E8E8;" | [[Signetics]] |
|- | |- | ||
| − | | colspan="3" | || colspan="6" | [[NEC]] | + | | colspan="3" style="border: none;" | || colspan="6" style="background: #E8E8E8;" | [[NEC]] |
|- | |- | ||
| − | | colspan="5" | || colspan="2" | [[OKI]] | + | | colspan="5" style="border: none;" | || colspan="2" style="background: #E8E8E8;" | [[OKI]] |
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| − | | colspan="10" | || colspan="7" | [[Cypress]] | + | | colspan="10" style="border: none;" | || colspan="7" style="background: #E8E8E8;" | [[Cypress]] |
|- | |- | ||
| − | | colspan="11" | || colspan="3" | [[Vitesse]] | + | | colspan="11" style="border: none;" | || colspan="3" style="background: #E8E8E8;" | [[Vitesse]] |
|- | |- | ||
| − | | colspan="11" | || colspan="11" | [[Elektronika]] | + | | colspan="11" style="border: none;" | || colspan="11" style="background: #E8E8E8;" | [[Elektronika]] |
|} | |} | ||
Revision as of 12:57, 1 November 2015
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 (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 market. To date, the Am2900 family is used as the de facto baseline for bit-slice design.
| 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 |
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 | |||||||||||||||||||||
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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