Re: Tseng 4000AX Weird Characters

Posted on 2018-06-22, 14:53

by

by fsmith2003

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Your right. I hadn’t noticed the video chip difference. Hmmm. Well if anyone has a Tseng card with the TC6058AF out there would you mind uploading your bios?? Thanks for all the help so far though guys!

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Re: Modifying a Character Set in VGA Bios

Posted on 2018-06-22, 14:39

by

by fsmith2003

in Marvin \ Video

in Marvin \ Video

That’s a cool program but it seems to make the bios unbootable whenever I make any changes. Changing just one pixel then pressing s to save then reburning just causes a blank screen on the computer.

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Re: Modifying a Character Set in VGA Bios

Posted on 2018-06-22, 06:50

by

by fsmith2003

in Marvin \ Video

in Marvin \ Video

If the characters were encoded into the tsengs bios, you could view it in a program like DirectEd. If it selects a character set from the system bios, that would be a more complicated thing; to find where it selects the system bios character set and change it to standard us. Is this a translation …

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Re: Tseng 4000AX Weird Characters

Posted on 2018-06-22, 06:49

by

by fsmith2003

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I came across this page but I don't understand any of it to be honest. Does anyone know if this would be helpful information toward solving my issue? http://www.ctyme.com/intr/rb-0209.htm Maybe it could help you try getting it running with another screen mode. But it will not help you getting at …

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Modifying a Character Set in VGA Bios

Posted on 2018-06-22, 04:57

by

by fsmith2003

in Marvin \ Video

in Marvin \ Video

In another thread I have been trying to figure out how to change the character set for a Tseng ET4000AX which is displaying a different set other then your standard english (U.S) symbols, letters, and numbers. Does anyone know of a way to modify the dumped bios to make these changes?

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Re: Tseng 4000AX Weird Characters

Posted on 2018-06-22, 04:53

by

by fsmith2003

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I came across this page but I don't understand any of it to be honest. Does anyone know if this would be helpful information toward solving my issue? http://www.ctyme.com/intr/rb-0209.htm

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Re: Tseng 4000AX Weird Characters

Posted on 2018-06-22, 04:14

by

by fsmith2003

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Tiido wrote: I think the problem is in the PLL chip (one in socket next to a crystal), on the photos I saw couple different ones and I imagine they're not 100% same. It does appear we have different chips there yes. Would there be any way to reprogram mine to match his or are those a programmable …

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Re: Tseng 4000AX Weird Characters

Posted on 2018-06-22, 03:42

by

by fsmith2003

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

quicknick wrote: Your SyncBios is identical to mine. What happens if you leave the original Sync on the card and only replace the MainBios? I did try that. Same result with the frequency issue and wavy screen.

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Re: Tseng 4000AX Weird Characters

Posted on 2018-06-22, 00:57

by

by fsmith2003

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

What have you used to burn the chips, your TL866 arrived already? If it did, please dump here the content of your chips. I don't have any spares now, but will get them and test my card with your BIOSes. Yes, I did receive my TL866 already. Amazon Prime is a wonderful thing! Here are my files from …

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Re: Tseng 4000AX Weird Characters

Posted on 2018-06-22, 00:25

by

by fsmith2003

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

AT28C256 pinout is slightly different to the 27C256, so I guess that's why it didn't work. As for the Sync chip, I'm pretty sure that it's a 256kbit too, so you can choose 27C256 (any brand, but I like the AMD ones :D ) and uncheck "Check ID". Well I got them both burned onto 27C256's and here is …

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Re: Tseng 4000AX Weird Characters

Posted on 2018-06-21, 19:17

by

by fsmith2003

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It should. As I mentioned earlier, there's no indication about its size on the "sync bios" chip, so I've read it two times, first assuming it is a 27c256 and then as a 27c512. However, the 512kb image, if split in two, produces two identical files so that should mean the chip is also 256kbit in …

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Re: Tseng 4000AX Weird Characters

Posted on 2018-06-20, 14:07

by

by fsmith2003

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Ok great! I have everything ordered so will find out in a couple days. Also, one other question, I had some spare EEProms laying around for my XT-Ide and burned your files to them and those did not work. Is there a difference in the way an EEprom and Eprom function other than the re-programmability …

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Re: Tseng 4000AX Weird Characters

Posted on 2018-06-20, 03:29

by

by fsmith2003

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Ok great! I have everything ordered so will find out in a couple days. Also, one other question, I had some spare EEProms laying around for my XT-Ide and burned your files to them and those did not work. Is there a difference in the way an EEprom and Eprom function other than the re-programmability …

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Re: Tseng 4000AX Weird Characters

Posted on 2018-06-19, 15:51

by

by fsmith2003

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

quicknick wrote: You need two chips such as these. So that same chip will work as a repleacement for both slots then?

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Re: Tseng 4000AX Weird Characters

Posted on 2018-06-19, 13:26

by

by fsmith2003

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Please post a picture of your actual card, and maybe peel back a little the label on your SYNC BIOS to see the markings on the chip. Yes here you go. I do have one of the TL866 programmers on the way. Figured I could use it for some other projects to if it wont work for this. So will I be able to …

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Re: Eprom Burner Recommendations

Posted on 2018-06-19, 12:37

by

by fsmith2003

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Would there be any reason not to get the newer TS866II as opposed to the older models?

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Eprom Burner Recommendations

Posted on 2018-06-19, 05:23

by

by fsmith2003

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

As the title says. I am in the market for an Eprom Burner and I'm not too familiar with the models that exist today. Are there any advantages or disadvantages between usb and parallel?

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Re: Tseng 4000AX Weird Characters

Posted on 2018-06-19, 02:01

by

by fsmith2003

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

quicknick, what sort of eprom programmer did you use to extract the bios files? I am new to the whole eprom flashing process and thought I would be able to use my XTIde to program the chips from the Tseng card but it does not seem to work.

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Re: Tseng 4000AX Weird Characters

Posted on 2018-06-16, 18:00

by

by fsmith2003

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes BloodyCactus, it’s an odd one for sure. And thanks for the file quicknick. I’ll try that out soon and see how it works!

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Re: Tseng 4000AX Weird Characters

Posted on 2018-06-15, 04:34

by

by fsmith2003

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

quicknick wrote: Anyway, no problems with the character set, so if you want I can send you a BIOS dump. Yes please. That would be great! And my jumper is set at 1-2. Seems to run just fine other than the odd character set. I think that just sets it to either 8 or 16 bit mode.

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