ZX81 RULES OK!
Here you will find a collection of articles of enhancements for the ZX81 Personal Computer. Some are brand new and others revisit the many projects I have contributed over the years. Enjoy!
1. Introduction
2. ZXKBDv3 Keyboard Interface with High Speed Com Port
3. AT Keyboard to ZX81 Interface (1997)
4. Original ZX97 Article (1997)
5. Updated ZX97 Lite article (2004) - corrected zx97.rom
6. 32K RAM plus 32 bit memory mapped I/O (new)
7. Original ROMKEY article (1996)
8. Convert and display high resolution graphic.bmp files on a ZX81 (1998)
9. Speed up a ZX81 by skipping video frames (old)
10.SON of ZON Sound and I/O board (old and new)
11.Add an Alphanumeric LCD to your ZX81 (1998)
12.8 Channel Analog to Digital Converter for the ZX81
13.High Resolution Graphics on a 1K ZX81
16.ZX ROM patch for auto running BASIC from RESET
17.TINY RAMDOS - ZX81 FILE DIRECTORY PROGRAM
20.A simple Proportional Joystick Interface
21.CHR$X16 - Enhanced Video Characters for the ZX81
23.ZX81nv - addon or standalone ZX81 control
24.ZX TURBO - A ZX81 Clock Doubler
25.NINTENDO GAMEPAD FOR THE ZX81
27.AUTOBASIC for the ZX81 or ZX97
28.White on Black ZX81 video characters
30.Why Wait?
31.ZXVOICE - A simple voice synthesizer
32. HS-2 (Revised) DUAL TS1000 - HIGH SPEED INTERFACE
33. HS-3 - 32 BIT I/O COMMUNICATION PORT
34.HS-4 - DUAL TS1000 with SHARED MEMORY
Contact me : Wilf Rigter
wc reflections - a snip of my web cam feedback experiments