Letter from Sinclair Research to Tom Bent re 8K ROM Upgrade
Sinclair Research has no problem with your proposed eprom for improvements to the operating system.
Letter from Sinclair Research to Tom Bent re 8K ROM Upgrade Read More »
Timex/Sinclair 1000
Sinclair ZX81 8K ROM Upgrade manual
Here is the eprom upgrade for your operating system. Version 10 is the current issue. Several revisions have been made to both “fix” and improve the Sinclair BASIC operating system, I’m quite sure that all of the changes will delight you. You will probably forget that it is installed in a few short days. ALL
Sinclair ZX81 8K ROM Upgrade manual Read More »
Basil’s Right-Typer or Write Your Own Word-Processor Program
The following is a step-by-step description of how I wrote the program, and why I wrote it as I did. The program as described applies to the TS 2068. Some of the principles described can be modified to work on the good ol’ ZX81/TS 1000, but only with serious limitations. The biggest problem with the
Basil’s Right-Typer or Write Your Own Word-Processor Program Read More »
Custom Keyboard Tip
Did you hook up one of those TI keyboards to your ZXB1/TS1000? Don’t you wish it had all the Sinclair legends on the keys? Well, if you can find an old membrane keyboard (remember those?) you can cut it up and paste the legends onto the keys with silicone cement/sealer.
Custom Keyboard Tip Read More »
Fun with Hot Z II
Hot Z II uses a fascinating “trick” for getting back into itself if you should stumble into the error restart, RST 08. This is done by jimmying the ER_SP system variable. For a graphic demonstration, type @676 (disassembly mode), then go to edit made and run the code starting at this address (shift R). Dumps