John Thomas

Articles (5)

TitleAuthor(s)PublicationDate
Addendum: A Simple EEPROMER
Update to Paul Hunter’s article on Bankswitching for the TS1000 (TS Horizons part 4).
Sinc-LinkJuly/August 1988
ZX81 LARKEN Drive Select
Listing selects either drive 1 or 2 from any place in RAM.
Sinc-LinkMarch/April 1987
ZX81 Screen Clear
Short machine language program to clear a portion of the screen.
Sinc-LinkJuly/August 1987
ZX81 Screen Clear
Here’s a nice touch for a program. It allows erasing “bottom lines” rather than all as in CLS.
John ThomasCATS NewsletterFebruary/March 1989
ZX81-LARKEN Tip
Note from a user about fix to disk copy program.
Sinc-LinkJuly/August 1987
Scroll to Top