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- Newsgroups: comp.sys.ibm.pc.hardware
- Path: sparky!uunet!haven.umd.edu!darwin.sura.net!wupost!slustl!ejh
- From: ejh@slustl.slu.edu (Eric J. Haug)
- Subject: ET4000 manual question
- Message-ID: <1992Sep2.153737.8645@slustl.slu.edu>
- Organization: St. Louis Univ.
- Date: Wed, 2 Sep 1992 15:37:37 GMT
- Lines: 43
-
-
- I have a video card from an unnamed Taiwan company.
- It has an ET4000AX TC6059AF 9208EAI chip on it.
- It has an ICS 2494N chip using a 14.XX818 XTAL.
- It has a MUSIC TR9C1710-80PCA DAC chip.
- It implements a VESA system.
- It has a SYNC BIOS chip with the following:
- BT005 WKED-SYA 205CNF2C0C and a 256K EPROM and 1Mb of ram.
- The ROM is based at C000:0 and has ET4000 VESA 1/10/92 V8.02X
- The board does not appear to have any "PAL's"
- in the decode logic, unless they are in the "SYNC BIOS" chip.
- There are no other copyrights save for Tseng Labs.
- It came with a dmode program on a floppy with a TSENGLABS
- INT'L CO LTD copyright. The dmode program is version 2.5
- and states that it is for MegaVGA or MegaEGA cards.
- This program will set the card to do 1024x768x256 and 70 Hz refresh
- (mode 38). And both VGA card and monitor work acceptably under DOS.
-
- I am running X386 1.2E (a port of MIT's X11R5 for ISA Bus PC's)
- with 386BSD (a port of UC Berkeley's NET2 software)
- and can program the card for 640x480 and
- 800x600 using the default boot up settings and whatever the card
- does or does not do with the register bit twiddling already built into X386.
-
- I would like to program the system to work properly at 1024x768 or so
- but cannot get it set up quite right. I believe i need to tell the chip
- and dot clock VCO to work at a higher frequency.
- Is there an engineering example in the et4000 handbook that is similar
- using the chips mentioned.
- And if so, are there register level programming descriptions available.
-
- If there is information available, how may i obtain it, and
- may it be distributed to other institutions?
- I would expect that quite a few other people would
- be interested in doing the same thing, as ET4000 chip cards were
- recommended for X386. However, the cards that i find available now
- use the VCO rather than a bunch of separate clocks.
-
- Thanks again.
-
- Eric Haug, Projects Engineer, Earth and Atmospheric Sciences
- Saint Louis University 3507 Laclede Ave. St. Louis, MO
- 3146583136(w) 3146583117(fax) ejh@slustl.slu.edu
-