BASIC on 6502, Z80, and modern hosts

15-minute session: read for 3 minutes, trace for 3, experiment for 7, and complete the check for 2. Spend longer whenever you need.

A BASIC dialect belongs to an interpreter or compiler, not directly to a CPU. Classic 6502 and Z80 systems often provided different BASIC dialects and device commands. Separate portable arithmetic from machine-specific graphics, PEEK/POKE addresses, and file commands. Port a three-line greeting by consulting the target dialect manual. In this lab Bywater runs on Linux; it does not emulate either historical machine.

Practice and evidence

Keep three notes: your prediction, the actual result, and why they match or differ. The completion check grades understanding; the practice task builds skill.

Language reference: www.intel.com

Language reference: developer.arm.com

Language reference: docs.riscv.org