Nascom News­let­ter

The last change is the major change and comes about because of the different ways that the assemblers keep track of things. This short piece of code is put at CC65 to suit the simpler V & T requirements:–

The Nas-Dis routine ALLINO is next copied from CCBC to CC74 and the following code entered. This writes the end of source code address to the screen and puts the cursor up two lines so that when Newline is pressed after initiating V & T, the assembler is ready to go.

The version of V & T that I have was produced before Nas-Sys 3 was introduced. Because of this, it suffers from not being able to print the work areas on the top line while running under Nas-Sys. If you would like to display these work areas on the top line then the following small modifications should be made.

When V & T is initially loaded, the 2DH bytes of the Nas-Sys table at 20AE need to be copied to 207E. Copy only 27H bytes to 207E and, as this leaves the Nasbug calls in the same place, the work areas can be printed on the top line.

Because V & T jumps directly to the ‘WRITE’ subroutine in Nas-Sys instead of through the SCAL routine, the jump address at 209C needs to be changed to 04FB.