Publication: Sinc-Link
Pub Details: Sinc-Link v12 n4 (Volume 12, Issue 4)
Date: July/August 1994
Pages: 5
A hardware project adding an AY-3-8912 sound chip and joystick port to the ZX81/TS1000 via the expansion bus. Includes BASIC and machine code driver routines (PLAY, MUSIC, SOUND commands via SHREB), schematics, PCB layout, parts list, hex loader, and demo program listing.