Re: Identify motherboard thread
Posted on Today, 12:57
Looks like this one : https://theretroweb.com/motherboards/s/pcchips-m520
Re: ISA riser-slot compatibility
Posted on Today, 10:49
You are in luck, I found the riser, it was luckily not deep in a box but quite near the top 🤣 I expect it to be compatible but I cannot give any guarantees, it did come out of a ProLinea 486/33 with a bit different/older motherboard.
Re: ISA riser-slot compatibility
Posted on Today, 08:56
This board needs its own riser, plugging this one in will make the blue smoke escape from multiple locations. I might actually have a suitable riser, from a slightly different Compaq ProLinea 486. Only problem is that I don't quite know where it is (because I moved to Norway a little while ago), but …
Re: ESFM reverse-engineered
Posted on Yesterday, 14:19
ESFM is still made to be OPL family compatible part, and OPL family lacks some of the parameters of other families (OPN, OPM in particular) and the range they got. Freq register and TL are smaller for example, while SL and Detune are missing altogether and this alone will make it difficult to get …
Re: Need help getting ATI Radeon Xpress 200 working with Windows 98
Posted on 2023-06-06, 14:22
voodooc wrote on 2023-06-06, 11:39: Hello, I also need a driver for xpress 200m, but the site is down. can you please give me that inf file? File attached to this post. Rename TXT to INF
Re: VGA cable signal degradation at high resolutions.
Posted on 2023-06-04, 06:54
To point out few things : You are being very optimistic about what everyone has available to them (OP has modern 1440p monitor, so no CRT magic of not having native resolution for him here). Connecting VGA output to any modern digital only monitor, will result in reduction of max res/refresh to …
Re: VGA cable signal degradation at high resolutions.
Posted on 2023-06-03, 13:43
VGA has no inherent resolution limit, you can push as high freqs as your video card allows and monitor can accept. The main limit is video card, they usually have 400MHz pixel clock limit on VGA output which makes it impossible to do stuff like 4k for example. 2560 x 1600 @ 60Hz is not at all a …
Re: VGA cable signal degradation at high resolutions.
Posted on 2023-06-03, 07:06
VGA cable can make a difference for sure. There can be blurring toward right side of screen, oscillations that cause some bright streaks toward right around text and other fine details, and reflections that cause faint copies of existing details toward right side. Much of it comes from bad impedance …
Re: Orpheus II soundcard thread
Posted on 2023-06-02, 19:05
Hahaha, awesome ~
Re: "Input not supported" error when resolution set to 800x600 256 color
Posted on 2023-06-02, 05:14
This corruption problem is definitely because of the memory chips on the card as thought of earlier, nothing short of replacing them will get you working high resolutions. The chips simply are too slow. It sounsd like modifications are not an option to the particular card so you will have to live …
Re: is this everex cs4232-kq, cs9233-cq, cs4112-cs soundcard a direct clone of any other card?
Posted on 2023-05-31, 04:20
Babasha wrote on 2023-05-29, 16:27: Ls244 + Ls245 is Opl3 clone?!))) Not on this card, the chips don't have enough pins to be OPL3, the 244 and 245 on it are actual 244 and 245 and are there for CD interfaces. 9233's FM emulation is quite terrible indeed 🤣
Re: Turbo button on 486 acts like a 'sleep' button
Posted on 2023-05-30, 12:25
Ok, labelling would suggest that they do go into the right place, but the observed behaviour suggests otherwise. But the second row is worth looking at. What motherboard is in the machine ? Do you have photos ? You might be able to find it here along with some documentation : https://theretroweb.com …
Re: Turbo button on 486 acts like a 'sleep' button
Posted on 2023-05-30, 12:03
Sounds like the button and LED are wired to "Green switch" and indicator, which basically is a sleep kinda deal. See where exactly do the switch and LED connect to on the motherboard.
Re: "Input not supported" error when resolution set to 800x600 256 color
Posted on 2023-05-28, 01:14
This card produces a 56Hz output in 800x600 from what I remember, LCDs tend to be quite picky with what they'll display and many ISA cards output timings many LCDs are not particularly fond of, especially low end things like these Tridents.
Re: Did early sound cards actually process all the sound effects?
Posted on 2023-05-27, 06:11
The Amiga for example, had 4 independent mono channels that could pan to left/center/right and run at different sampling rates. Not quite accurate, Amiga has the 4 x channels, but the panning is two permamently panned to left and two to right, one cannot choose where a particular channel pans to. …
Re: Roland MT-32 CM-32L upgrades?
Posted on 2023-05-26, 21:24
This is for 2nd generation MT32s without the PGA LA32 chip, for these you simply use CM32 or LAPC program ROM and burn a new sample ROM with the extra sounds and you get all the fun. You might have to solder a wire to bring in the highest address line to the sample memory chip. 27C801 and one wire …
Re: Small CRT monitor for DOS applications/games - this is the way
Posted on 2023-05-25, 20:18
It can be a rabbit hole but it ceratinly is difficult to find stuff that hasn't seen huge hours of use. I once got a 17" monitor where previous owner had accidentally spilled water into in past. I repaired the few bad parts in it and it actually gave a super bright and nicely focused image …
Re: Toshiba 300CDT - broken Sound Blaster PCM playback
Posted on 2023-05-22, 03:25
DN2 uses ADPCM sounds that most sound cards, including YMF71x, do not support. There is a patch to the game (and few others) that replaces these ADPCM samples with uncompressed PCM ones but I don't know any further details.
Re: CT3670 RAM
Posted on 2023-05-21, 22:39
Take a pencil eraser to the ISA connector of the card, this will clean things up and at least rule out one problem. Perhaps try different versions of the Creative drivers, there are a number of versions around.
Re: CT3670 RAM
Posted on 2023-05-19, 06:57
Ideally you need two matching sticks, your options are 2x 1MB, 2x 4MB and 2x 16MB. Parity SIMMs will work but are not good to use on these sound cards because the parity lines are not connected and any digital chip with floating inputs can do strange things. The sticks you got should mix and work …
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