jayacotton/draw

Drawlines on a 4010 emulator with your z80

draw

Drawlines on a 4010 emulator with your z80

The code will build and produce a library "libplot.lib" that can be used to construct drawing programs on your CP/M machine. You will need z88dk.

There is a lib directory, do a make -i and ignore the errors. We only need a few of the routines in this library, just to lazy to figure out what is needed. use z88dk-z80asm -xlibmath.lib *.o to build a library.

I have built the test/box program with these libraries, and will push a new Makefile asap.

This code was converted from fortran to c. Thus it is pass by address and not by reference. I am it the process of 'c'iffing the code.

DO NOT USE THIS YET.

WRT license. I found the fortran source on bitsaver, there was no license there, email to tektronix was not replied to. I don't think they care about it anymore but, don't build a project on this code base.

draw's Issues

Box is showing a data write error.

The box program is not completing the drawing. Duplicating the last
few draw commands, gets the box on the screen.

Looks like the byte count may be off by some.

Log transformation not working.

Its not transforming the coordinates correctly.

dashed lines not working.

It draws (slowly) a line, but its not dashed.

polar transformations not working.

just draws a line at 45 degrees.