See all articles from SMUG Bytes v10 n3
Second installment in a series on interrupt-driven Z80 machine language programming for the Timex/Sinclair 2068. Covers a BLINK routine that alternates two User Defined Graphics characters on screen using variables for timing, position, and attributes, followed by three sound-effects routines: a border-toggle BEEP, a gun/bomb effect, and a whistle-and-bang bomb effect. Full machine code listings with addresses and mnemonics are provided throughout.