Table of contents ├─ Overview | ├─ Estimates | └─ Planned Specifications ├─ Purchase └─ Images ├─ 16 bit register ├─ 8 bit ALU slice └─ 8 bit adder
Website Home

Renderings of this page:

- minimal PDF (printable)
- minimal HTML

Atom feed

# etc-nand

You can click the PCB images to switch to the other side.

## Overview

etc-nand is a real-world ETC.A CPU built from almost only quad NAND gate ICs (74hc00)

It will probably be finished in a few months.

### Estimates

Estimated gate count:

- 2800 NAND gates
- 320 tristate buffers

Estimated component counts:

- 700x 74hc00 quad NAND gates
- 40x 74HC54 octal tristate buffers
- a few simple resistors

### Planned Specifications

ETC.A base instruction set + byte operations + S&F + Von Neumann

The CPU will communicate with peripherals over a 16 bit data + 15 bit address memory bus

## Purchase

You will be able to purchase one in the future.

Stay tuned!

## Images

Images of PCBs that are either already manifactured or currently beeing manifactured by JLCPCB.

### 16 bit register

### 8 bit ALU slice

A 8 bit adder module will be placed in the middle

### 8 bit adder