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Article #18877

Re: NTSC from Mac II?

#18877
From: Pat Mead
Date: Tue, 08 Sep 1987 20:12
28 lines
2062 bytes
In article <2801@husc6.UUCP> stew@endor.UUCP (Stew Rubenstein) writes:
>In article <4314@oberon.USC.EDU> chris@acrux.usc.edu (Christopher Ho) writes:
>>I seem to have read somewhere that Apple's Mac II video card can put out
>>its analog RGB signals at NTSC frequencies.  My Mac II's on order, so I
>>chris@oberon.usc.edu				LA/LB HHH: Headless
>
>remember correctly, was that the one person at Apple who really
>understood the Mac II video board knows how to do this with a video
>board ROM change, but that he had higher priority projects.  So the
>answer is, pressure Apple to release this ROM through any means you
>have available.

At our last users group general meeting a local mac programmer hacked together
an init that allowed the Mac II's video board output to go directly to a large
screen (NTSC) TV. It was done in software!! I know since I helped him debug it
in the first of the meeting. The output of graphics was ok but reading text was
not very good at a distance. If there's a demand for this maybe I can talk him
into posting it. When you use the init NO output will be seen on your mac 
screen only on the NTSC monitor. Which means you must boot from elsewhere to
remove the init to use your mac monitor again. It would be nice if you could
use both at the same time.

***********************************************************
usual disclaimers---	

Patrick Mead			ogcvax!inteloa!omepd!patm

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References: <4314@oberon.USC.EDU> <2801@husc6.UUCP>

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From: patm@omepd (Pat Mead)
Newsgroups: comp.sys.mac
Subject: Re: NTSC from Mac II?
Message-ID: <1033@omepd>
Date: Tue, 8-Sep-87 16:12:48 EDT
Article-I.D.: omepd.1033
Posted: Tue Sep  8 16:12:48 1987
Date-Received: Fri, 11-Sep-87 04:42:09 EDT
References: <4314@oberon.USC.EDU> <2801@husc6.UUCP>
Reply-To: patm@omepd.UUCP (Pat Mead)
Distribution: na
Organization: Intel Corp., Hillsboro
Lines: 28