Authors
Robert Keller
Publication
Publication Details
Volume: 1 Issue: 5
Date
September/October 1981
Pages
12-18
See all articles from SYNC v1 n5
The following article describes a set of subroutines for drawing lines, arcs, regular geometric shapes, and sectors on the Sinclair ZX80 with the 8K Basic ROM and 16K RAM. The routines should also work on a ZX81 with 16K RAM. In addition, in SLOW mode on the ZX81, you can watch the figures develop as they are drawn, although for some shapes, such as “filled” circles, this will be a very slow process as many points must be calculated before they can be plotted on the display.