stuarth@csis.dit.csiro.au (Stuart Hungerford) (03/19/91)
I'm trying to get a Trident VGA card (16 bit 512K memory) to work with my AT clone (12 MHz, 2MB memory, DTK bios). The problem is whenever I put the card in the machine and set the appropriate jumper to indicate "colour" monitor the machine just won't boot from the hard disc. It *will* boot from a floppy though. There are other problems too: Sometimes the BIOS on the VGA card says it has 256K memory and other times it says it has 512K memory. Occasionally the screen goes blank and the machine hangs, and at other times all I see are vertical green lines. Any advice you can give much appreciated, Stuart +---------------------------------------------------------------------------+ | Internet : stuarth@csis.dit.csiro.au | | | Voice : +61-6-2750941 | _--_|\ | | Fax : +61-6-2571052 | / \ | | Postal : CSIRO Division of Information Technology, | \_.--._/ | | GPO Box 664, Canberra ACT 2601 | v | | AUSTRALIA | | +---------------------------------------------------------------------------+
jc58+@andrew.cmu.edu (Johnny J. Chin) (03/19/91)
Excerpts From Captions of netnews.comp.sys.ibm.pc.hardware: 19-Mar-91 Why does my VGA card stop m.. Stuart Hungerford@csis.d (1244) >I'm trying to get a Trident VGA card (16 bit 512K memory) to work with my >AT clone (12 MHz, 2MB memory, DTK bios). The problem is whenever I put >the card in the machine and set the appropriate jumper to indicate "colour" >monitor the machine just won't boot from the hard disc. It *will* boot from >a floppy though. From my experience this sounds like an interrupt conflict. Do you have a 16-bit hard drive/floppy drive controller? If not, they you definitely have an interrupt problem. If you do have a 16-bit HD/FD controller, try setting your Trident card to 8-bit mode operation (this should either be a jumper change or a dip switch change, depending on the version of the Trident VGA board). Also, make sure that you have the appropriate memory setting on the VGA board, some clone companies don't set the jumpers properly (so it won't be correct out of the box). I hope this helps you. __________ Carnegie Mellon University ___ / \ / / /_/ / /\/ _/ / / / "Happy Computing ..." __/. /__ / / / / / / / / -- Computer Dr. / / Internet: Johnny.J.Chin@andrew.cmu.edu / ------- / 4730 Centre Ave. #412 BITnet: jc58@andrew \__________/ Pittsburgh, PA 15213 UUCP: ...!uunet!andrew.cmu.edu!jc58
vanmick@hpsgm2.sgp.hp.com (Van Der Beek Michael-Leo) (03/22/91)
Hi, I too just had this problem but it was a SCSI card that caused the problem. I don't know what card you are actually working, I am using a Trident 1Mb VGA card. Puting the DIP switch 5 to on solved my problem. I would advice you to check that your jumpers on the number of DRAM chips you have must be set correctly. Switch 5 changes from fast address decode (off - default) to slow address decode (on - must for SCSI,RLL and some others). You may have to change a jumper (can't remember which) which says that it uses standard bus and not autodetect bus. Well, I hope this helps. Michael