Difference between revisions of "Eater 8-bit computer"

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The '''Eater 8-bit computer''' (aka the '''SAP-1''' {'''S'''imple '''A'''s '''P'''ossible} version 1) is a breadboard computer created by Ben Eater. I have decided to make my own version of the computer and will be providing information on its progress in this article.
 
The '''Eater 8-bit computer''' (aka the '''SAP-1''' {'''S'''imple '''A'''s '''P'''ossible} version 1) is a breadboard computer created by Ben Eater. I have decided to make my own version of the computer and will be providing information on its progress in this article.
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==Computer modules==
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* [https://eater.net/8bit/clock Clock module]
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* [https://eater.net/8bit/registers Registers]
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* [https://eater.net/8bit/alu Arithmetic logic unit] (ALU)
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* [https://eater.net/8bit/ram Random access memory (RAM) module]
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* [https://eater.net/8bit/pc Program counter]
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* [https://eater.net/8bit/output Output register]
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* [https://eater.net/8bit/bus Bringing it all together]
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* [https://eater.net/8bit/control CPU control logic]
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 +
==Complete parts list==
 +
* 14 x Breadboard
 +
* 1 x 22 AWG Solid Tinned-Copper Hook-Up Wire
 +
* 10 x 1kΩ resistor
 +
* 9 x 10kΩ resistor
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* 1 x 100kΩ resistor
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* 24 x 470Ω resistor
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* 1 x 1MΩ resistor
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* 1 x 1MΩ potentiometer
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* 6 x 0.01µF capacitor
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* 16 x 0.1µF capacitor
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* 1 x 1µF capacitor
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* 4 x 555 timer IC
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* 2 x 74LS00 (Quad NAND gate)
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* 1 x 74LS02 (Quad NOR gate)
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* 5 x 74LS04 (Hex inverter)
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* 3 x 74LS08 (Quad AND gate)
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* 1 x 74LS32 (Quad OR gate)
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* 1 x 74LS107 (Dual JK flip-flop) Note: The videos use the 74LS76 which is extremely difficult to find. The 74LS107 is functionally equivalent but be careful, it has a different pinout.
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* 2 x 74LS86 (Quad XOR gate)
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* 1 x 74LS138 (3-to-8 line decoder)
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* 1 x 74LS139 (Dual 2-line to 4-line decoder)
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* 4 x 74LS157 (Quad 2-to-1 line data selector)
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* 2 x 74LS161 (4-bit synchronous binary counter)
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* 8 x 74LS173 (4-bit D-type register)
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* 2 x 74189 (64-bit random access memory)
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* 6 x 74LS245 (Octal bus transceiver)
 +
* 1 x 74LS273 (Octal D flip-flop)
 +
* 2 x 74LS283 (4-bit binary full adder)
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* 3 x 28C16 EEPROM
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* 3 x Double-throw toggle switch
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* 3 x Momentary 6mm tact switch
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* 1 x 8-position DIP switch
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* 1 x 4-position DIP switch
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* 44 x Red LED
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* 8 x Yellow LED
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* 12 x Green LED
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* 21 x Blue LED
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* 4 x Common cathode 7-segment display
  
 
==External links==
 
==External links==

Latest revision as of 00:46, 23 April 2021

The Eater 8-bit computer (aka the SAP-1 {Simple As Possible} version 1) is a breadboard computer created by Ben Eater. I have decided to make my own version of the computer and will be providing information on its progress in this article.

Computer modules

Complete parts list

  • 14 x Breadboard
  • 1 x 22 AWG Solid Tinned-Copper Hook-Up Wire
  • 10 x 1kΩ resistor
  • 9 x 10kΩ resistor
  • 1 x 100kΩ resistor
  • 24 x 470Ω resistor
  • 1 x 1MΩ resistor
  • 1 x 1MΩ potentiometer
  • 6 x 0.01µF capacitor
  • 16 x 0.1µF capacitor
  • 1 x 1µF capacitor
  • 4 x 555 timer IC
  • 2 x 74LS00 (Quad NAND gate)
  • 1 x 74LS02 (Quad NOR gate)
  • 5 x 74LS04 (Hex inverter)
  • 3 x 74LS08 (Quad AND gate)
  • 1 x 74LS32 (Quad OR gate)
  • 1 x 74LS107 (Dual JK flip-flop) Note: The videos use the 74LS76 which is extremely difficult to find. The 74LS107 is functionally equivalent but be careful, it has a different pinout.
  • 2 x 74LS86 (Quad XOR gate)
  • 1 x 74LS138 (3-to-8 line decoder)
  • 1 x 74LS139 (Dual 2-line to 4-line decoder)
  • 4 x 74LS157 (Quad 2-to-1 line data selector)
  • 2 x 74LS161 (4-bit synchronous binary counter)
  • 8 x 74LS173 (4-bit D-type register)
  • 2 x 74189 (64-bit random access memory)
  • 6 x 74LS245 (Octal bus transceiver)
  • 1 x 74LS273 (Octal D flip-flop)
  • 2 x 74LS283 (4-bit binary full adder)
  • 3 x 28C16 EEPROM
  • 3 x Double-throw toggle switch
  • 3 x Momentary 6mm tact switch
  • 1 x 8-position DIP switch
  • 1 x 4-position DIP switch
  • 44 x Red LED
  • 8 x Yellow LED
  • 12 x Green LED
  • 21 x Blue LED
  • 4 x Common cathode 7-segment display

External links