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. | ||
| + | |||
| + | ==Computer modules== | ||
| + | * [https://eater.net/8bit/clock Clock module] | ||
| + | * [https://eater.net/8bit/registers Registers] | ||
| + | * [https://eater.net/8bit/alu Arithmetic logic unit] (ALU) | ||
| + | * [https://eater.net/8bit/ram Random access memory (RAM) module] | ||
| + | * [https://eater.net/8bit/pc Program counter] | ||
| + | * [https://eater.net/8bit/output Output register] | ||
| + | * [https://eater.net/8bit/bus Bringing it all together] | ||
| + | * [https://eater.net/8bit/control CPU control logic] | ||
| + | |||
| + | ==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== | ==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
- Clock module
- Registers
- Arithmetic logic unit (ALU)
- Random access memory (RAM) module
- Program counter
- Output register
- Bringing it all together
- CPU control logic
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
- Build an 8-bit computer from scratch — by Ben Eater
