Re: Ultimate DOS terminal application?

Posted on 2018-12-30, 16:13

by

by GigAHerZ

in Marvin \ Software

in Marvin \ Software

krcroft, Thanks... I have USB->COM adapter on the way so i can emulate hayes modem with my modern computer and trick my old one to think it's connected to the actual modem. So if i understand correctly you are also not aware of any DOS terminal program supporting ZModem over TCP/IP stack? I'm in a …

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Re: Resurrecting an Socket 3 motherboard (Soyo SY-25N)

Posted on 2018-12-30, 16:05

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Found chip from winbond: W27C512 Datasheet: http://www.kosmodrom.com.ua/pdf/W27C512-45Z.pdf It seems to be EEPROM with exact pinout to existing EPROM: M27C512 Datasheet: https://www.bucek.name/pdf/27c512.pdf Am i correct about this? Next step is to find a way to program it, right?

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Resurrecting an Socket 3 motherboard (Soyo SY-25N)

Posted on 2018-12-30, 15:36

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Good day! I have aquired a dead motherboard from Soyo. Looking at stason.org, it seems to be Soyo SY-25N. (There's a sticker with 025N, so i assume, it's the N variant) https://stason.org/TULARC/pc/motherboards/S/SOYO-COMPUTER-CO-LTD-486-SY-25M-N-P.html Now, i have read this topic: https://www. …

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Re: Dallas Real Time Clock. Replace RTC or add battery?

Posted on 2018-12-30, 13:57

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I've been replacing those modules and with replacement, i have added a socket for it as well in place. One could dremel and add other battery solution to those modules, but i haven't bothered to do that... yet...

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Re: Ultimate DOS terminal application?

Posted on 2018-12-30, 12:21

by

by GigAHerZ

in Marvin \ Software

in Marvin \ Software

krcroft, Theres a software package from Microsoft called "Microsoft Network Client 3.0". It's for dos and supports TCP/IP, DHCP, DNS resolver etc. One can even mount samba shares (from Windows 10, if you enable samba 1.0 support in it!) as network drives purely in DOS. So saying it's not a thing in …

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Re: 386SX 33Mhz motherboard... need some help!

Posted on 2018-12-30, 07:50

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Ozzuneoj wrote: I've thought about replacing it with a rechargeable NiMH, but they aren't that cheap I've got them like 4 barrels for 3$ total from eBay and they work great. 😀

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Re: Ultimate DOS terminal application?

Posted on 2018-12-30, 07:43

by

by GigAHerZ

in Marvin \ Software

in Marvin \ Software

Kermit uses Kermit. This doesn't make it the ultimate DOS terminal... I've tried MS-Kermit, as i have described in the first post. Terminal itself is fine, but it doesn't seem to have any support for any XYZmodem protocol... And all external XYZmodem applications i've found, that can be used with …

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Re: 386SX 33Mhz motherboard... need some help!

Posted on 2018-12-30, 07:35

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The cache does wonders for 386. You get a amazing boost going from cacheless to 64KB, going fruther up to 256KB gives only a small bump. Why don't you replace battery with similar new NiMH barrel type battery? They are quite cheap on ebay/aliexpress.

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Re: Ultimate DOS terminal application?

Posted on 2018-12-29, 20:47

by

by GigAHerZ

in Marvin \ Software

in Marvin \ Software

gdjacobs wrote: Kermit, my friend. It's a beautiful thing! I'm aware of Kermit and mentioned it in initial post. Can you point out, how i could use XYZmodem with kermit over TCP?

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Re: Mouse not working with 386 mobo

Posted on 2018-12-28, 20:24

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Have you tried a loopback test with serial port?

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Re: Question about cache ram on motherboard (TAG chip "capacity")

Posted on 2018-12-28, 13:48

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Looking at the other values (256KB -> 8K, 512KB -> 32K (Probably 16K used)) then 1M -> 32K looks logical.

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Re: Ultimate DOS terminal application?

Posted on 2018-12-28, 11:27

by

by GigAHerZ

in Marvin \ Software

in Marvin \ Software

mbbrutman, thank you for your reply. First of all i want to really thank you for the great work you've done on mTCP. It's an amazing collection of software that works right out of the box with minimum configuration. Thank you! The main reason for ZModem really is that there are BBS'es out there that …

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Re: Ultimate DOS terminal application?

Posted on 2018-12-26, 15:04

by

by GigAHerZ

in Marvin \ Software

in Marvin \ Software

Note that this forum is about "Getting old DOS games working on modern hardware" as per the description. For old hardware ask in Marvin -- https://www.vogons.org/viewforum.php?f=60 Oh sorry. I did read it and i somehow understood it includes other software than games as well. Can it be moved …

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Ultimate DOS terminal application?

Posted on 2018-12-26, 02:27

by

by GigAHerZ

in Marvin \ Software

in Marvin \ Software

Hi, I'm in a search for ultimate dos terminal application to use on my dos machines. I would like it to support serial communication and also packet drivers and telnet support. I would also like it to support all kinds of file transfer protocols like xmodem, ymodem and zmodem. The mTCP collection …

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Re: Proper workflow to search for alternative chips?

Posted on 2018-12-22, 12:53

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

That's a standard 16bit wide 256Kbit sized DRAM, other DRAMs with such arrangement have same pinout and work same way and are direct substitutes. I've used terms like "256k dram" (and then scanned through datasheets, to get the correct stuff) to find possible options. Is this the best way to do it, …

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Re: Proper workflow to search for alternative chips?

Posted on 2018-12-21, 19:05

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hmm, I think i'm missing something right now. Let's take this: http://pdf.datasheetcatalog.com/datasheet/AllianceSemiconductor/mXrqqxt.pdf (Found it in previously described way, going to be upgrades for CL5446 gfx) It doesn't say anything specific about JEDEC standard except packaging... which is …

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Re: Serial ports both dead? (Acorp 5VIA3P / EFA P5V580)

Posted on 2018-12-21, 17:55

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

So, first of all good news: Both COM ports are now working! And even better - i had to change only one 75232 chip... but not for reasons i'm proud of... Lesson nr 1: NEVER USE PICO-PSU TO TEST STUFF. (Yes, it's easy and nice, BUT IT DOESN'T SUPPLY -12V!) When 75232 doesn't get it's negative 12V, …

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Proper workflow to search for alternative chips?

Posted on 2018-12-21, 14:51

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi, Here and there, some videocards, motherboards, soundcards, whatever happens to come by where there are possibilities to add some chips. (usually some type of memory) Now, it's easy to look for the markings of existing chips and try to find additional ones just like that. But what would be the …

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Re: Bought these (retro) hardware today

Posted on 2018-12-21, 07:54

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by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Tiido wrote: I got these two for 12€ : Seller photos, I'll not actually get to see them in person until next year. I don't know the model numbers either. Hopefully they are working nicely after a clean ~ Damn it! You were the guy! And i wasn't behind the computer to overbid you... 😜 Grats!

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Re: Serial ports both dead? (Acorp 5VIA3P / EFA P5V580)

Posted on 2018-12-20, 20:59

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

One way to tell is to see if a fat GND trace connects middle of the header (sequential) or edge of the header (staggered). I'm going to remember that probably as long as i live now... Thankfully, when i wasn't (unfortunately) too much interested in giving new lives to computers, i did desolder lots …

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