Re: WANTED: simple pixel routines in C for Herc Card

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Article #5555

#5555

From: Bernie Roehl
Date: Wed, 05 Feb 1986 14:54

23 lines
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In article <466@tekig5.UUCP> petel@tekig5.UUCP (Pete Lancashire) writes:
>
>Looking for a 'collection' of c routines to set/reset pixels
>on a Herc Card.  And wishing for bit-blt functions.
>

Setpixel(x, y)
	int x,y;
	{
	char *p;
	p = 0x2000 * (y & 3) + 90 * (y >> 2) + (x >> 3);
	_poke(_peek(p, 0xB000) | (0x80 >> (x & 7)), p, 0xB000);
	}

Clearpixel(x, y)
	{
	char *p;
	p = 0x2000 * (y & 3) + 90 * (y >> 2) + (x >> 3);
	_poke(_peek(p, 0xB000) & (~(0x80 >> (x & 7))), p, 0xB000);
	}


Sorry, no bitblt (yet).  If I write one, I'll probably post it...

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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.2 9/18/84; site watdcsu.UUCP
Path: arc1-ca.pugleaf.net!utzoo!watmath!watnot!watdcsu!broehl
From: broehl@watdcsu.UUCP (Bernie Roehl)
Newsgroups: net.micro.pc
Subject: Re: WANTED: simple pixel routines in C for Herc Card
Message-ID: <2064@watdcsu.UUCP>
Date: Wed, 5-Feb-86 09:54:45 EST
Article-I.D.: watdcsu.2064
Posted: Wed Feb  5 09:54:45 1986
Date-Received: Thu, 6-Feb-86 04:46:17 EST
References: <466@tekig5.UUCP>
Reply-To: broehl@watdcsu.UUCP (Bernie Roehl)
Organization: U of Waterloo, Ontario
Lines: 23

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