Schematic of Sinclair 16K RAM Pack

See all articles from SYNC v1 n5
Publication: SYNC
Pub Details: SYNC v1 n5 (Volume 1, Issue 5)
Date: September/October 1981
Pages: 28
Schematic of the Sinclair ZX 16K RAM Pack, with edge connections (top: D7, RAMCS, KEY, D0, D1, D2, D6, D5, D3, D4, MREQ, RD, WR, RFSH; underside: 5V, 9V, KEY, 0V, 0V, A0-A3, A13, A12, A11, A10, A9, A8, A7, A6, A5, A4) and the +12V/-5V power supply circuit. Captioned "Sinclair ZX 16K RAM Pack ©".
Schematic of the Sinclair ZX 16K RAM Pack, with edge connections (top: D7, RAMCS, KEY, D0, D1, D2, D6, D5, D3, D4, MREQ, RD, WR, RFSH; underside: 5V, 9V, KEY, 0V, 0V, A0-A3, A13, A12, A11, A10, A9, A8, A7, A6, A5, A4) and the +12V/-5V power supply circuit. Captioned "Sinclair ZX 16K RAM Pack ©".
1        74LS32   QUAD 2 i/p OR GATE
2        74LS00   QUAD 2 i/p NAND GATE
3,4,5,6  74LS157  QUAD 2-1 LINE DATA SELECTOR
7        74LS393  DUAL 4 BIT BINARY COUNTER
8-15     4116     16K x 1 DYNAMIC RAM

Tags

1981 Sinclair Research Ltd. ZX80