Path: utzoo!utgpu!water!watmath!clyde!att!mtunx!rutgers!cmcl2!nrl-cmf!ames!lll-tis!lll-winken!lll-lcc!pyramid!cbmvax!carolyn
From: carolyn@cbmvax.UUCP (Carolyn Scheppner CATS)
Newsgroups: comp.sys.amiga.tech
Subject: Bug in Devcon Epson driver source
Keywords: printer Epson
Message-ID: <3966@cbmvax.UUCP>
Date: 8 Jun 88 16:19:29 GMT
Reply-To: carolyn@cbmvax.UUCP (Carolyn Scheppner CATS)
Distribution: comp
Organization: Commodore Technology, West Chester, PA
Lines: 27

TITLE: bug in EpsonX[CBM_MPS-1250] source on Devcon disks 
 
	There is a bug in the source code given out at DevCon for the 
EpsonX[CBM_MPS-1250 printer driver. 
 
	The original lines are... 
	if (PD->pd_Preferences.PrintShade == SHADE_GREYSCALE) { 
		bptr += x; 
		do { /* for all source pixels */ 
 
	The line 'bptr += x;' should be REMOVED!  It is incorrect as 
approximately 10 lines down the line... 
		*(bptr + x) |= bit; 
					accounts for x. 
 
	The EpsonX[CBM_MPS-1250] driver given out at DevCon DID NOT have 
the bug compiled into it.  It was simply a documentation error in the 
source file. 
 
	Driver writers beware! 
 
	Regards, David Berezowski 
-- 
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Carolyn Scheppner -- CATS   >>Commodore Amiga Technical Support<<
                     UUCP  ...{allegra,ihnp4,rutgers}!cbmvax!carolyn 
                     PHONE 215-431-9180
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