Caple C871i Manual de usuario descargar pdf (Pagina 71)

Apple II Computer Info

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### Created : Tuesday, March 18, 1997 Modified: Tuesday, March 18, 1997

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From: [email protected]

Newsgroups: comp.sys.apple2

Subject: Re: Return fixing & Color killing?

Date: Tue, 18 Mar 1997 06:03:20 +0000

Organization: Southwestern Bell Internet Services

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Edhel Iaur, Esq. wrote:

> On Tue, 04 Mar 1997 06:07:49 +0000, [email protected] wrote:

> >Edhel Iaur, Esq. wrote:

> >> Does anybody remember the book _Enhancing Your Apple II_? Well, I

> >> just bought a pack of resistors, and opened up my //e to do the "Color

> >> Killer Mod". However, as the title implies, the book is apparently

> >> written for Apple // users, not Apple //e users. The chips, etc. are

> >> in a totally different position. Does anybody know how to do the

> >> "Color Killer Mod" on a //e?

> > .... I don't know about the color-killer mod you

> >mention. What is it supposed to do?

> FINALLY! I Just got this article! It's supposed to turn everything

> monochromatic (like that button on the good Apple color monitors), via

> sovtware, via one of the announciators.

Thanks for the info. It looks like you should be able to do this kind

of full-screen color-killer on a IIe by using a general purpose NPN

transistor (2N3904, 2N2222, etc.) to shunt the Color Burst signal. The

transistor's collector would connect to the junction of R15 and R13; the

emitter lead would go to Ground. The transistor should be connected directly

to the R15-R13 junction and ground.

The base lead would go through a 2k-3k Ohm resistor to an annunciator

output, such as An-3 at pin 12 on the 16-pin J-15 Game connector. PEEKing

the appropriate addresses should flip Color OFF and ON.

Apple II Computer Technical Information : Apple II Family Hardware Info

ftp://ground.ecn.uiowa.edu/2/apple2/miscinfo/hardware : May 2001 : 71 of 572

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Caple C871i Manual de usuario Pagina 71

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