^..^ ページ ZX81 Part 2 – Upgrading the on board memory from 1K to 16Kの詳細情報
ZX81 Part 2 – Upgrading the on board memory from 1K to 16K。ZX81 character set - Wikipedia。SG-ET8X-BOOT1-01 - Zebra ET80, ET85 Rugged Boot。Sinclair ZX81 Kit – pagetable.com。#uqolch