Threaded Mode | Linear Mode

Eddie W. Shore · 12-16-2018, 03:35 AM

Here I exploit TI-60's RST function's ability to continue program execution and using the square root function as a "tester" to calculate triangle numbers.

Instructions:

1. In RUN mode (outside of LRN), store the following values:

R0 = 0
R1 = n

2. Execute the program by pressing [RST], [R/S]. The program is done when you see "Error".

3. Clear the error by pressing [CE/C].

4. Recall R0. This is your triangle number. (R1 will have -1).

TI-60 Program: Triangle Numbers

Code:

PC00  OP71:  RCL 

PC01  OP01:  1

PC02  OP61:  STO 

PC03  OP85:  +

PC04  OP00:  0     // sum R1 in R0

PC05  OP75:  -

PC06  OP01:  1

PC07  OP95:  =

PC08  OP61:  STO

PC09  OP01:  1    // store R1 -1 in R1

PC10  OP86:  √  // take the square root of R1, if R1<0, the error occurs, ending the "loop"

PC11  OP22:  RST  // reset back to step 00

Link to blog post: https://edspi31415.blogspot.com/2018/12/...mbers.html