Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!linus!philabs!cmcl2!seismo!umcp-cs!cvl!umd5!louie From: louie@umd5.UUCP (Louis Mamakos) Newsgroups: net.micro.amiga Subject: Memory/clock expansion for the Amiga (3/9 - clock.sch) Message-ID: <1017@umd5.UUCP> Date: Wed, 11-Jun-86 16:07:13 EDT Article-I.D.: umd5.1017 Posted: Wed Jun 11 16:07:13 1986 Date-Received: Sat, 14-Jun-86 06:40:34 EDT Reply-To: louie@trantor.umd.edu (Louis Mamakos) Organization: U of Md, CSC, College Park, Md Lines: 69 4-20pf Var +-----)|---------+ | | GND || | +---||||------+---+----+ 5ea 1N4148 | || 32768Hz | | | /20M | 5V---|<|-----|<|---+ +---)|---GND \ | 2 +---------+ 24 | | 10pf / +---+ +----+--|<|----+----|<|---+ | | 3 | | V | G | | +-------/\/\/-----+--------+ MC14 | B +---)|--N | / 390k 17 | 6818 | B | 1uf D | \ 560 DS---------+ | | +--+ / 14 | [C8] | +--|<|--+ | | AS---------+ | | | | [10] 18 +-----+ 2 11 | | +-/\/\/-+ | 12v D7---------+ +---------------+ | 100k | | 17 |74LS | 3 10 | | 18 | | D6---------+ 245 +---------------+ +------+-----+ | 16 | | 4 9 | | 22 | G | D5---------+ +---------------+ +------+--)|---N | 15 |[B8] | 5 8 | | 1uf D | D4---------+ +---------------+ | | 14 | | 6 7 | | 20 | D3---------+ +---------------+ +----- GND | + 13 | | 7 6 | | --------- D2---------+ +---------------+ | ------- 4 CELL 12 | | 8 5 | | --------- NICAD D1---------+ +---------------+ | ------- 11 | | 9 4 | | --------- 5 VOLTS D0---------+ +---------------+ | ------- | | | | | 19 | | 1 15 | | 13 | SEL*------O| +-------+-------+ |O-----------+ GND +-----+ | +---------+ | BRW ---------------------+ | +-------)-------+ 74LS04 [A6] O | | 3 |\ 4 SEL 1 12 +-----+ 9 | | SEL*----| >O-------+ GND-----+ +----+ | |/ 2 +--- | | | LDS----------------+ \ 6 11 |\ 10 AS 11| | 8 | 4 | |O------| >O--------|> |O---+ | A1-----------------+ / |/ +-----+ | | 1 |\ 2 5 +--- O | | BRW-----| >O-------+ | | | |/ VBB | | 74LS20 [A7] | | 2/2 74HC | [A8] | 13 74 | | 5V---------+ O 4 | 12 +--- 2 +-----+ 5 | SEL----------------+ \ 8 9 |\ 8 GND-----+ +----+ 10 | |O--+---| >O----DS | | NOTE: LDS----------------+ / | |/ 3 | | 6 chips at 5 |\ 6 9 +--- +-----------------------|> |O- A8 and C8 A1------| >O-------+ +-----+ powered |/ O 1 from VBB | not from +---[53] 5v sup RES* -- Louis A. Mamakos WA3YMH University of Maryland, Computer Science Center Internet: louie@trantor.umd.edu UUCP: {seismo!umcp-cs, ihnp4!rlgvax}!cvl!umd5!louie