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Zilog Z-80: Difference between revisions
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|Manufacturer=Zilog | |Manufacturer=Zilog | ||
|Model=Z-80 | |Model=Z-80 | ||
|Part_nos=156-0983-03,156-0983-04 | |Part_nos=156-0983-03,156-0983-04,156-0963-02,156-2280-00 | ||
|an=an | |an=an | ||
|Description=8-bit microprocessor | |Description=8-bit microprocessor | ||
|Used_in=318;338;5223;834;DAS9100;SPG-271;TSG-170; | |Used_in=318;338;5223;834;835;836;DAS9100;SPG-271;TSG-170; | ||
}} introduced in 1975. | }} introduced in 1975. | ||
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It adds several registers, a vectored interrupt system, and a hardware DRAM refresh counter to the 8080 architecture. | It adds several registers, a vectored interrupt system, and a hardware DRAM refresh counter to the 8080 architecture. | ||
There were several speed grades, initially starting at 2.5 MHz (non-suffix) / 4 MHz (Z80A) / 6 MHz (Z80B), etc., later CMOS versions up to 20 MHz, and derivatives up to about 50 MHz. | There were several speed grades, initially starting at 2.5 MHz (non-suffix) / 4 MHz (Z80A) / 6 MHz (Z80B), etc., later CMOS versions up to 20 MHz, and derivatives up to about 50 MHz. Several second-source manufacturers produced their versions of this CPU. | ||
Several second-source manufacturers produced their versions of this CPU. | |||
The '''National Semiconductor NSC800''' is code-compatible with the Z-80 but has a multiplexed address/data bus like the [[Intel 8085]], without being pin compatible with either. | The '''National Semiconductor NSC800''' is code-compatible with the Z-80 but has a multiplexed address/data bus like the [[Intel 8085]], without being pin compatible with either. | ||
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==Used in== | ==Used in== | ||
{{Part usage}} | {{Part usage}} | ||
* 836: Z80H | |||
* 835: Z80A | |||
* [[5223]] Opt.10 (GPIB board) | * [[5223]] Opt.10 (GPIB board) | ||
* 156-0963-02: Z-80A | |||
* 156-2280-00: Z-80H | |||
==Supported by== | ==Supported by== | ||