SAM BASIC Roots

• BETA BASIC v1.0 tap, v1.8 tap, v1.8 manual (Polish) tap, v1.9 tzx
• BETA BASIC v3.0 tap tzx, v3.0 manual pdf (odt Slovak), v3.1 tap
• BETA BASIC v4.0 tap (128k only), v4.0 manual pdf

Spectrum 128 Extended Basic

• link