HP-15C

Boots the HP-15C to its RPN display showing 0.0000, ready for entry. Type on the on-screen HP-15C keyboard, or use your physical keyboard for the digits, . , + − × ÷, ENTER, ← (back / CLx) and ESC (= ON). The f (gold) and g (blue) prefix keys reach the scientific functions printed above and below each key - complex numbers, matrices, SOLVE and integrate. Open the debugger to single-step the HP Nut processor, read and write its A/B/C/M/N field registers and nibble RAM, set breakpoints and RAM write-watchpoints. The HP-15C system ROM (NUT microcode) is copyright Hewlett-Packard; the redistributable dump is self-hosted for emulation.