From 99e4c659a29f23fa93337c723ce9e75ed05f7d81 Mon Sep 17 00:00:00 2001 From: mahjongg2 Date: Wed, 31 Jul 2019 13:29:45 +0200 Subject: [PATCH] Update README.md --- README.md | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/README.md b/README.md index 51d694f..c74f628 100644 --- a/README.md +++ b/README.md @@ -1,9 +1,9 @@ ZX81+35 ==== -ZX81+35 is a clone of the Sinclair ZX81, started in 2014, and finished in 2016, that uses modern (SMT) components on a small (10x10cm) PCB, it only uses commercially available parts, so no ULA, and works with the original ZX81 ROM code. +ZX81+35 is my clone of the Sinclair ZX81, started in 2014, and finished in 2016, it uses modern (SMT) components on a small (10x10cm) PCB, and only uses commercially available parts, so no ULA, and works with the original ZX81 ROM code. -Previously (five years ago I named it ZX14) but after two years working on it, I changed my mind and renamed it to first to ZX81+34 and later to ZX81+35 to clarify that my copy was first designed 34/35 years after the original +Previously (in 2014) I named it ZX14 but after two years working on it, I changed my mind and renamed it to first to ZX81+34 and later to ZX81+35 to clarify that my copy was first designed 34/35 years after the original There are three versions of my clone, the first prototype I designed was called ZX81+34 (Rev 1.0) and was build and tested. This PCB needed many patches, for example the 5V and GND signals on the micro-USB port was inverted, and the footprint for the crystal oscillator I chose was wrong.