Article View: comp.lang.postscript
Article #5866PPD file omissions and strangeness
From: Pond Scum
Date: Thu, 31 Dec 1992 07:53
Date: Thu, 31 Dec 1992 07:53
38 lines
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2271 bytes
I'm working on a program which uses PPD files and to test it I grabbed a bunch of PPDs off the Adobe file server. I have run into some weird things in PPD files and was wondering if anyone else had run into similar problems and what you decided to do about them: 1) Why do the Lino PPDs for PostScript versions < 52.3 have entries for *SetResolution, but versions > 52.3 do not have entries for *SetResolution? We have a RIP 30 with 52.3 and I'm pretty sure you can change the resolution if you do an exitserver first. 2) The entries under *ScreenProc seem pretty useless, especially if the device has a screen filter installed. There is a special PPD for an AGFA SelectSet 5000 with the screen filter active, but RoundAGFASpot and EllipticalAGFASpot (or whatever they are called) not listed under ScreenProc. It would be very useful if they were. 3) According to the PPD spec, the value following *MaxMediaWidth is an integer inside double quotes. I got L3330523.PPD and L530_523.PPD off the Adobe file server and the numbers after *MaxMediaWidth were not inside double quotes. 4) None of the PPDs for the Varityper imagesetters have a *CustomPageSize entry. From looking at the file it seems you could use the setpage operator almost the same way as setpageparams on most other RIPs? I could swear that I used a Varityper imagesetter once and it supported the setpageparams operator. 5) One of the Varityper PPDs has the wrong invocations to set the resolution to 1270. It actually tries to do "270 setresolution". Of course, there could be some really weird bug where you have to say "270" instead of "1270", but I doubt it. Actually, if you've ever done anything at all with PPD files I'm interested in hearing about it. Jonathan Hue hue@island.COM
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Newsgroups: comp.lang.postscript,comp.periphs.printers Path: arc1-ca.pugleaf.net!sparky!uunet!island!hue From: hue@coney.island.COM (Pond Scum) Subject: PPD file omissions and strangeness Message-ID: <1992Dec31.075301.8845@island.COM> Originator: hue@coney Sender: usenet@island.COM (The Usenet mail target) Organization: Island Graphics and Hot Tub Repair of Marin County Date: Thu, 31 Dec 1992 07:53:01 GMT Lines: 38