Block Transfers: Variables Transfer (Part 2)

One drawback of Timex/Sinclair computers is that LOADing a program erases any data that you have in the variables area to make room for in-coming variables. However, the program developed here allows you to keep variables in the machine safe from NEW, CLEAR, and LOAD. Furthermore, it allows you to transfer variables from one Basic program to another. This spares you the effort of re-entering a data base in each new program that you wish to use it in. You can even combine data stored in several different programs into a single data base, a facility you may desire should you upgrade your computer with additional memory. The heart of the Variables Transfer routine consists of block transfers to and from the space above RAMTOP of the sort we began exploring in Block Transfers, Part 1, in the last issue.