Re: Help Identifying a 486 Motherboard
Posted on 2021-04-18, 18:42
What is displayed on the POST screen (BIOS ID string at the bottom)?
Re: Installing/using IDE CD drive in DOS 6.22
Posted on 2021-04-14, 22:56
You basically require two drivers. One that comes with DOS (there are alternatives out there) called MSCDEX.EXE and the device driver for the CD-ROM drive itself. I prefer the one called VIDE-CDD.SYS, but the one that comes with the Windows 98 startup disk is called OAKCDROM.SYS. You can take the …
Re: MB and RAM for 486 DX-50
Posted on 2021-04-11, 10:18
The Asus PVI-486SP3 does not officially support a 50 MHz FSB (at least, not according to the revision 1.3 manual that I have and they even inserted an addendum in the manual specifically stating this). I do agree that it is a very nice motherboard, but I don't think it will be suitable for this …
Re: Where to get plastic legs/clips to hold the MIDI waveboard
Posted on 2021-04-10, 11:57
You could perhaps just try using wooden dowel pins? Measure the diameter of the holes and buy the appropriate sized dowel as a spacer.
Re: Help me identify a 286 motherboard
Posted on 2021-04-09, 18:57
I need bios of this motherboard i have one similar but no bios can u dump please? Well that Is going to be a chore - this Is not a EPROM, and the numbers on the chip don't return anything when put into google You can try to dump the BIOS with Navrátil System Information (NSSI), but I can't remember …
Re: Help me identify a 286 motherboard
Posted on 2021-04-09, 11:09
Another alternative would then be a diagnostic card or EEPROM - with the latter, try the SuperSoft/Landmark Diagnostic ROM available on minuszerodegrees.net. You will need an MDA or CGA card with the appropriate monitor to see what's being displayed (and of course a blank E(E) PROM and burner). …
Re: Help me identify a 286 motherboard
Posted on 2021-04-09, 09:20
Another alternative would then be a diagnostic card or EEPROM - with the latter, try the SuperSoft/Landmark Diagnostic ROM available on minuszerodegrees.net. You will need an MDA or CGA card with the appropriate monitor to see what's being displayed (and of course a blank E(E) PROM and burner).
Re: STB Ultrasound 32 Pro (Compaq Interwave sound card) - The comprehensive guide
Posted on 2021-04-02, 15:50
I just got one of these cards for my HP Vectra. It has a 1mb simm plugged in. Found the card at a computer junk/hobby store in a paper bag. It seems to work fine, I loaded the compaq drivers you posted on this thread, and sound in windows 95c just started working. I did notice that in dxdiag I …
Re: Running an Am5x86 at 5v?
Posted on 2021-03-15, 13:47
Maybe there is something wrong with the voltage regulator? Personally, I wouldn't want to overvolt my 25 year old CPU on a permanent basis and potentially shorten its lifespan.
Re: Problem with Windows 98 and DMA
Posted on 2021-03-09, 12:30
Also, use 80 wire IDE cables if you can Is the problem the cable? How can I know that? Replace the cable with another 80 wire IDE cable - they normally have a grey, blue and black connector on each end. Also, you an easily see the wires inside the housing are much closely packed together (compared …
Re: 486 SX 16 & 20 MHz
Posted on 2021-03-08, 19:30
Doom just loves the 486 architecture. The SX-16 is very close to the DX-40 in Doom, but quite behind in the rest of the benchmarks. Interesting results though, as I was competing with my friend's SX-25 when I was young (I had a DX-40). Mine had 128kb of external cache, and his didn't have any, so …
Re: *START HERE* SoftMPU 1.91 - Software Intelligent MPU-401 Emulator
Posted on 2021-03-05, 23:39
Just curious - most protected mode games only came out after 1993, when General MIDI was already the standard for games and none required an intelligent mode MPU-401 MIDI interface. Why do you then need SoftMPU? Just route the MIDI straight from any sound card with an onboard UART mode MIDI …
Re: XT IDE bios
Posted on 2021-03-05, 23:34
How are you flashing the ROMs? With an EEPROM programmer? There is a DOS utility included with the XT-IDE BIOS. Try using that when flashing the BIOS directly on the NIC.
Re: Should I buy a MT-32 'old' today?
Posted on 2021-03-05, 23:14
I forgot to mention that AWE64 out goes into SC-55 INPUT, then from SC-55 OUTPUT it goes into Cakewalk powered speakers. At what point do I need to lower (mute) which sound volume? SC-55 (all others mute?) UM-ONE (all others mute?) MT-32 (all others mute?) The SC-55 has the option to mute all ( …
Re: Sound Blaster 16 CT4170 won't install on NT 4.0
Posted on 2021-01-30, 22:48
When you overclocked the FSB, did you also change the clock divider in the CMOS setup? At 33 MHz, it should have a divider of 4, but at 40 MHz it should be 5. By keeping the divider at 4 and with a FSB of 40 MHz, you're running your ISA bus at 10 MHz, which could be the cause of your problems.
Re: Leading Edge Model M MP1676L
Posted on 2021-01-28, 23:02
Had another look and apart from some more old 5 1/4 disks I did not find the original monitor. There are quite a few down there but they are all from a newer era than what I am looking for. There are some areas I can't get to yet until some more of the junk is cleared though, so maybe. I did find a …
Re: Leading Edge Model M MP1676L
Posted on 2021-01-28, 21:26
I have the rebranded version called the Sperry HT PC. More info here in my original post: https://www.vogons.org/viewtopic.php?t=57843 and here: http://www.vcfed.org/forum/showthread.php?61459-Sperry-HT-(XT)-Personal-Computer-(model-3070-02)-documentation-wanted It does utilise CGA graphics and you …
Re: Looking for reccomendations for either PCem or 86box
Posted on 2021-01-19, 18:11
Agree with Zup's comments. PCI sound cards didn't really gain wide spread adoption until 1998 ( as people started to upgrade to Pentium II PC's). Many people bought Pentium MMX CPU's in 1997 and 1998, due to the high cost of the Pentium II and, although some later models (from late 1997 & 1998) …
Re: When did you purchase your first 386 / 486 Computer? Availability vs the early 90's affordability norm.
Posted on 2021-01-01, 14:28
Here in South Africa, availability of computers were never really a problem. As in many other countries and due to the era, personal computers were just very expensive. I think once AMD & Cyrix (and to a certain extend some other CPU manufacturers) started to enter the CPU market, did the price of …
Re: Happy New Year 2021!
Posted on 2020-12-31, 22:37
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