Various useful functions from the PPC ROM

Similar to other Solvers (e.g. the Advantage Pac DM41X Solve but with some minor differences to be aware of.

• Put the name of the program containing the expression to be solved in register 6
  • ALPHAAAALPHA
  • XEQ<key>ALPHAASTOALPHA06 * The program with the expression to be solved must be written as though x is on the x-stack only * other solvers “fill the stack” with X * here you need to manipulate the stack - easiest is to just ENTER ENTER ENTER and then treat the same as other solvers, and use x<>y to pull a fresh copy of X as needed * Put a “step size” in y and a “start value” in x (e.g. -3) * 0 ENTER -3 * run SV ==== example ==== 2x^2 + 3x -4 = 0 Prog “AA” <code> LBL AA ENTER ENTER ENTER x^2 2 * x<>y 3 * + 4 - RTN </code> === for the first root === * 0 ENTER 1 * XEQALPHA SV ALPHA and the answer comes….. 0.850781059 === for the second root === * 0 ENTER -3 * XEQALPHA SV ALPHA and the answer comes….. -2.50781060 ===== Section Two ===== — John Pumford+Green 24/01/26 10:29 GMT ===== Further Information =====