HP-35

Boots the HP-35 to its red LED display showing 0., ready for RPN entry. Type on the on-screen HP-35 keyboard, or use your physical keyboard for the digits, . , + - * /, Enter (ENTER^), Backspace (CLx) and Escape (CLR). The scientific keys - sqrt, LOG, LN, e^x, x^y, 1/x, SIN, COS, TAN, ARC, pi, STO, RCL, x<>y, Rdn - are on the keyboard; this is the calculator that made the slide rule obsolete. Open the debugger to single-step the HP Classic processor, read and write its A/B/C/D/E/F/M field registers, disassemble the ROM, set breakpoints and register-write watchpoints. The HP-35 system ROM (Classic microcode) is copyright Hewlett-Packard; the redistributable dump is self-hosted for emulation.