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== Design == | == Design == | ||
− | The family includes two {{arch|4}} [[ALU]]s - ''2901'' and a ''2903''. The {{amd|AM2901}}/{{amd|AM2901A|A}} was the original chip designed, supporting 8 different basic operations. The {{amd|AM2903}}/{{amd|AM2903A|A}} was an enhanced version designed a bit later | + | The family includes two {{arch|4}} [[ALU]]s - ''2901'' and a ''2903''. The {{amd|AM2901}}/{{amd|AM2901A|A}} was the original chip designed, supporting 8 different basic operations. The {{amd|AM2903}}/{{amd|AM2903A|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. |
{{expand section}} | {{expand section}} | ||
− | |||
== 2nd sources == | == 2nd sources == | ||
The ''Am2900'' had a large number of 2nd sources: | The ''Am2900'' had a large number of 2nd sources: | ||
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| colspan="11" style="border: none;" | || colspan="3" style="background: #E8E8E8;" | [[Vitesse]] | | colspan="11" style="border: none;" | || colspan="3" style="background: #E8E8E8;" | [[Vitesse]] | ||
|- | |- | ||
− | | colspan="11" style="border: none;" | || colspan="11" style="background: #E8E8E8;" | [[ | + | | colspan="11" style="border: none;" | || colspan="11" style="background: #E8E8E8;" | [[Elektronika]] |
|} | |} | ||
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| {{\|AM2902}} || [[Carry-lookahead generator]] || 16, 20 | | {{\|AM2902}} || [[Carry-lookahead generator]] || 16, 20 | ||
|- | |- | ||
− | | {{\|AM2903}}<br />{{\|AM2903A}} || [[4-bit architecture|4-bit]] [[ALU]], | + | | {{\|AM2903}}<br />{{\|AM2903A}} || [[4-bit architecture|4-bit]] [[ALU]], Enhanced version of the {{amd|AM2901|2901}} || 48, 52 |
|- | |- | ||
− | | {{\|AM29203}} || [[4-bit architecture|4-bit]] [[ALU]], | + | | {{\|AM29203}} || [[4-bit architecture|4-bit]] [[ALU]], Enhanced version of the {{amd|AM2903|2903}} supporting BCD arithmetics || 48, 52 |
|- | |- | ||
| {{\|AM2904}} || Status and shift control unit || 40, 42, 44 | | {{\|AM2904}} || Status and shift control unit || 40, 42, 44 | ||
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* [[:File:The Am2900 Family Data Book With Related Support Circuits (1979).pdf|The Am2900 Family Data Book With Related Support Circuits (1979)]] | * [[:File:The Am2900 Family Data Book With Related Support Circuits (1979).pdf|The Am2900 Family Data Book With Related Support Circuits (1979)]] | ||
+ | |||
+ | {{DEFAULTSORT:Am2900}} | ||
[[Category:AMD microprocessors]] | [[Category:AMD microprocessors]] | ||
[[Category:4-bit microprocessors]] | [[Category:4-bit microprocessors]] |
Facts about "Am2900 - AMD"
designer | AMD + |
full page name | amd/am2900 + |
instance of | microprocessor family + |
main designer | AMD + |
manufacturer | AMD + |
name | AMD Am2900 + |
package | DIP40 + and FP42 + |
technology | Bipolar + |
word size | 4 bit (0.5 octets, 1 nibbles) + |