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Re: CGA/MDA style CRTCs

Posted on 2019-03-24, 22:20

in Milliways
Thank your a lot for replying Scali. :) I came across the HD46505 when I checked the chips inside my PC/XT clone, a Nixdorf M35. Since I didn't know what this chip was doing, I searched the web and finally found this information on a Japanese homepage. I wonder, though, if Hitachi made that chip on …

Re: Media Vision PAS16P Poping sound ?

Posted on 2019-03-24, 18:37

in Marvin \ Sound
Hi, are you sure it's the card ? As far as I know, the PAS16 had a very powerful amp. Perhaps the actively powered speakers just can't handle the strong output of the PAS16, thus causing the distortion ? Anyway. just a thought of mine.. Back in the 90s, when I used my PAS16 almost daily, audio …

Re: Win X

Posted on 2019-03-24, 18:05

in Milliways
The new OS has no respect for the user, IMHO; it doesnt even care to display a detailed error code. :-( In the past, I had no trouble using any Windows version. I even kind of liked Vista and Me and saw their (few) positive aspects. X (not even 8.x, which only was nasty but didn't feel like a threat …

Re: OAK OTI-037c - 800x600 mode ?

Posted on 2019-03-23, 14:02

in Marvin \ Video
Hi, thanks for your reply! No, I haven't yet, but I'll try soon, since I'm kind of a fan of tractal programs (I even took some footage of them, incl. OS/2!). Just one question about Fractint - Does the DOS version require a 386 CPU ? If so, I woudl try the card in a Pentium 133 instead of the target …

Re: OAK OTI-037c - 800x600 mode ?

Posted on 2019-03-22, 15:08

in Marvin \ Video
Hi, thank you very much for replies guys, I really appreciate that! :D just checked my OTI-37 again.. It seems to have got a few jumpers, too. Maybe for IRQ2 and 8-Bit/16-bit I/O ? Crystals are: 25,175 / 28,322 / 35,500 / 40,000 Mhz BIOS is version 2.15-35 (older). The VGA BIOS is split to two EPROM …

Re: OAK OTI-037c - 800x600 mode ?

Posted on 2019-03-20, 18:34

in Marvin \ Video
Hi, thanks four your reply. Well, yes, I kinda agree. All I'm looking for is a way to get the card running in SVGA resolution on programs like AutoSketch and Windows, maybe some SVGA graphic adventures, too, if that's possible. Nothing speed-related. The first one has the SVADi driver which works …

Re: OAK OTI-037c - 800x600 mode ?

Posted on 2019-03-20, 12:08

in Marvin \ Video
I've found some utilties, maybe you'll try them yourself. VESA37.COM installs a VBE BIOS in RAM. Emulation modes -CGA, Hercules, EGA- seem to work, too, albeit not perfetly. Oh, and the specs say the chip has a 132 column mode.. oti37c_specs.gif Last, but not least, I've found another site with a …

CGA/MDA style CRTCs

Posted on 2019-03-20, 11:03

in Milliways
Hi everyone, just found out that the popular 6845 apparently was based on the HD46505 design by Hitachi ( datasheet ). Furthermore, there also was a "sucessor" (kind of; among many enhanced clones), the MB89321A by Fujitsu (datasheet) .. http://www.st.rim.or.jp/~nkomatsu/crtif/HD46505.html English …

Re: DOS games running on a Microsoft Windows Mobile 2003 SE PocketPC device ?

Posted on 2019-03-20, 09:28

in DOS
I still own a Dell Axim x51 to this day, and while I found running PocketDOS on it was nothing more than a novelty, MAME ran quite well, especially for games that only required 2 buttons plus directional keys. I remember beating Captain Commando on it. That's interesting, thanks for letting us know …

Re: Norton Commander says LPT1 not available

Posted on 2019-03-18, 10:14

My recollection of the performance of communications at the time is a bit different. In the late 1980s the 16550 was pretty common and a welcome upgrade from the 8250. However most machines still topped out at 115,200 bits per second which was limited by the UART. If you assume no protocol overhead …

Re: Norton Commander says LPT1 not available

Posted on 2019-03-17, 15:45

I was getting 300-400kilobyte per second download rate using FTP using the DOS TCP stack on a 286-12mhz using a NE2000 clone card. Even using the Win32s TCP/IP stack, you can easily outperform serial or parallel direct connection cables. Likely true, though I meant period correct software of the …

Re: transfer files to old computer

Posted on 2019-03-17, 05:36

Hm. (MS-) DOS 5 only. Tricky. DOS 6.x included Interlink for such a reason. I imagine it is possible to type in a simple Kermit program in either Debug or QBASIC which receives a file via serial port. Other than that, I don't really know. If the laptop has got PCMCIA slots, perhaps it can boot off a …

Re: Norton Commander says LPT1 not available

Posted on 2019-03-16, 12:27

Back when this crap was expensive, and software immature, LPT file transfers were possibly a useful idea. But now there are much better ways of transferring data. Oh dear, my father could tell many stories about this. :D Back then in the 1980s to early 1990, programs like KirschbaumLink(/-Netz), …

Re: Norton Commander says LPT1 not available

Posted on 2019-03-16, 12:16

Hey, thanks for the info! I do tinker with the parallel port sometimes, but I didn't knew what kind of chips it used originally. Speaking of the Parallel Port, I remember another user even examined a Famiclone device that contained a simple LPT port. Edit: Just found the link: https://133fsb. …

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