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1. Phantom-Clock--RTC--for-24-pin-EPROM-or-ROM-socket-using-DS1215-or-DS1315 Phantom-Clock--RTC--for-24-pin-EPROM-or-ROM-socket-using-DS1215-or-DS1315 Public

   Board and sw for 24 pin EPROM with DS1215 or DS1315. Designed for TRS-80 Model II, but works on other (vintage) computers that have a 24 pin socket for the (BIOS) ROM. Compatible with SmartWatch so…

   Assembly 3

2. AM9511_for_TRS-80_M2 AM9511_for_TRS-80_M2 Public

   A PCB board that enables the use of a AM9511 Arithmetic processor on a TRS-80 Model II.

   BASIC 1

3. Arduino_keyboard_for_TRS-80_M2 Arduino_keyboard_for_TRS-80_M2 Public

   A Model II keyboard replacement by an Arduino Nano and Putty.

   C++ 1

4. TRS-80-Model-1-character-set-for-TRS-80-Model-II TRS-80-Model-1-character-set-for-TRS-80-Model-II Public

   A new character generator that brings the TRS-80 Model 1 character set, including the 2x3 graphics to the Big Tandy machines. No hardware modification, just a 2732 (4Kx8) EPROM and a wire with clip.

5. 140K-Board 140K-Board Public

   This is the logging of a project with the goal of turning the CPU board of a Rank Xerox 8M6 into a HD64180 (Z180) based SBC.

   Assembly

6. Speaking-Clock-Super-Cap-Backup Speaking-Clock-Super-Cap-Backup Public

   Backup circuit using a super-cap for a speaking clock. This removes the need of setting time and date when swapping batteries.