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Article #1196EGA to VGA/SVGA convertor ? Fooling a monitor ?
From: Joachim Maes
Date: Sat, 22 May 1999 00:00
Date: Sat, 22 May 1999 00:00
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I have to recover the files on a harddisk in an old XT with blownup EGA Monitor. His screen can not be repaired and I don't have a spare EGA Monitor. The PC just gives the annoying beep (no monitor present) and stops booting. This makes it impossible to recover the files via laplink. (Disconnecting the hard disk is not possible, 'coz it has a giant controller board that can't handle todays clockfrequencies.) My idea was to fool the necessary lines on the EGA Connector, so that the booting proces continues and I can recover the files of the old PC; but I can't find any sources describing which pins the motherboard checks for presence of a monitor. I was not able to verify the state of the videoadapter. Does somebody know which pins are checked by the boot-up routine to check for a monitor ? And can they be fooled ? The other alternative is to build an EGA-VGA Convertor (EGA Connector -> Vga Connector) I'm not sure this is a healthy thing to do for my VGA monitor.... So, does anyone has a shematic of a EGA-VGA Convertor ? Is it possible to do without any damage ? I Would be very happy if someone had a solution for my problem. Joachim Maes (Remove Nospam to reply)
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 10a1dd,3a51e47eef9ac2ec,start X-Google-Attributes: gid10a1dd,public X-Google-Thread: f4bb2,3a51e47eef9ac2ec,start X-Google-Attributes: gidf4bb2,public From: "Joachim Maes" <Joachim.NOSPAM@dma.be> Subject: EGA to VGA/SVGA convertor ? Fooling a monitor ? Date: 1999/05/22 Message-ID: <7i6pbm$ab5$1@news3.Belgium.EU.net> X-Deja-AN: 480930692 Organization: EUnet Belgium, Leuven, Belgium Reply-To: <joachim.maes@dma.be.NOSPAM> Newsgroups: comp.sys.ibm.pc.hardware.video,fido.belg.electron X-MimeOLE: Produced By Microsoft MimeOLE V4.72.3110.3