Caple C871i Bedienungsanleitung PDF herunterladen (Seite 307)

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Apple II Computer Info

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Newsgroups: comp.sys.apple2

Subject: Re: IIe no-slot-clock: battery replacement?

From: [email protected] (David Empson)

Date: Wed, 13 Jan 1999 03:19:38 +1300

Message-ID: <[email protected]>

References: <[email protected]> <[email protected]>

<[email protected]> <david.916111490@u513>

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David Wilson <[email protected]> wrote:

> [email protected] (Louis Schulman) writes:

> >I may be mistaken, but isn't the NSC just a Dallas Smartsocket?

> It is actually a SmartWatch - the SmartSocket goes under a RAM chip and

> turns it into NVRAM. The SmartWatch goes under a ROM and just provides time.

> There is one that goes under a RAM and provides time and NVRAM as well.

The one that goes under a RAM is also called a SmartWatch. There are

several different models. The letter suffix indicates the chip size and

type. Here is a full list from Dallas Semiconductors' 1989 data book:

DS1216 SmartWatch/RAM 16/64K

DS1216C SmartWatch/RAM 64/256K

DS1216D SmartWatch/RAM 256K/1M

DS1216E SmartWatch/ROM 64/256K

DS1216F SmartWatch/ROM 64/256K/1M

The capacities refer to bits, not bytes. The different sizes are

required because various static RAMs and ROMs are different sizes and

have the power supply pins in different places.

In the case of the No Slot Clock, you need a DS1216E to replace it.

In <[email protected]>, Robert Lacoste

<[email protected]> writes:

>Even if you find a way to change the battery, do you think it will pass

>the Y2K bug ?

Apple II Computer Technical Information : Apple II Family Hardware Info

ftp://ground.ecn.uiowa.edu/2/apple2/miscinfo/hardware : May 2001 : 307 of 572

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