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{{hitachi title|HMCS-4}}
 
{{hitachi title|HMCS-4}}
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{{ic family
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The '''Hitachi HMCS-4''' chipset was an {{intel|MCS-4|Intel MCS-4}} clone. The complete system was made of 4 chips. The chipset included a [[ROM]] chip, a [[RAM]] chip, [[shift register]], and a [[4-bit architecture|4-bit]] [[microprocessor]]. The chipset was first produced first quarter of 1975.
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| title            = Hitachi HMCS-4
 
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| image            = <!-- Image representation of the IC family, e.g. "MCS-4.jpg"  -->
 
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| caption          = <!-- description of the image                                  -->
 
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| developer        = Hitachi
 
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| manufacturer      = Hitachi
 
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| type              = microprocessors
 
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| production start  = 1975
 
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| arch              = 4-bit
 
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| isa              = 4004
 
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| word              = 4 bit
 
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| proc              = <!-- process, e.g. "8 μm"                                      -->
 
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| tech              = pMOS
 
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| clock            = <!-- clock speed, e.g. "740 kHz"  IF RANGE, USE PARAM BELOW!  -->
 
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| clock min        = <!-- clock min speed, e.g. "200 MHz"                          -->
 
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| clock max        = <!-- clock max speed, e.g. "900 MHz"                          -->
 
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| package          = <!-- package, e.g. "DIP16"                                    -->
 
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| package 2        = <!-- package, e.g. "DIP16"                                    -->
 
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| package 3        = <!-- package, e.g. "DIP16"                                    -->
 
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| package 4        = <!-- package, e.g. "DIP16"                                    -->
 
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| package 5        = <!-- package, e.g. "DIP16"                                    -->
 
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}}
 
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The '''HMCS-4''' was a [[microprocessor family|family]] of {{arch|4}} multi-chip [[microprocessor]] manufactured by [[Hitachi]]. It is unknown if this was a licensed 2nd source or a faithful clone of the {{intel|MCS-4|Intel MCS-4}}. The complete system was made of 4 chips. The chipset included a [[ROM]] chip, a [[RAM]] chip, [[shift register]], and a [[4-bit architecture|4-bit]] [[microprocessor]]. The chipset was first produced first quarter of 1975. Hitachi appear to have used the same numbering system as Intel did for the family with the exception of the ROM chip which used an existing ROM chip.
 
  
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== Members ==
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{| class="wikitable" style="float: right;"
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{| class="wikitable"
 
 
! colspan="2" | Family Members
 
! colspan="2" | Family Members
 
|-
 
|-
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| {{hitachi|HD35404}} || 4-bit CPU
 
| {{hitachi|HD35404}} || 4-bit CPU
 
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|-
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| {{hitachi|HN35600}} || ROM
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| {{hitachi|HD?????}} || ROM
 
|-
 
|-
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| {{hitachi|HD35402}} || RAM
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| {{hitachi|HD?????}} || RAM
 
|-
 
|-
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| {{hitachi|HD35403}} || Shift Register
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| {{hitachi|HD?????}} || Shift Register
 
|}
 
|}
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== Documents ==
 
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* [[:File:hitachi electronics brochure, 1976.pdf|Hitachi electronics catalog]], 1976
 
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== See also ==
 
== See also ==
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* {{intel|mcs-4/4004|Intel 4004}}
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* {{intel|4004|Intel 4004}}
 
* {{intel|MCS-4|Intel MCS-4}}
 
* {{intel|MCS-4|Intel MCS-4}}
 
* {{hitachi|HD35404}}
 
* {{hitachi|HD35404}}

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Facts about "HMCS-4 - Hitachi"
RDF feed
designerHitachi +
full page namehitachi/hmcs-4 +
instance ofmicroprocessor family +
instruction set architecture4004 +
main designerHitachi +
manufacturerHitachi +
nameHitachi HMCS-4 +
technologypMOS +
word size4 bit (0.5 octets, 1 nibbles) +