Intellivision

Boots the Mattel Intellivision with jzIntv’s free mini-EXEC + mini-GROM system ROMs and a small demo cartridge (no Mattel ROM needed). Click the screen, then play with the on-screen keypad, or the keyboard: 0-9 = right keypad, "-" = Clear, "=" = Enter; W E R / S D / Z X C = the direction disc; Left Shift / Alt / Ctrl = the three action buttons. Add ?debug, or click Debug, to inspect the live CP-1610 registers (R0-R7, flags S C O Z I D), read the 16-bit bus, single-step one instruction, frame-step and pause/resume. Step is a true one-instruction step (jzIntv is an interpreting core).