Re: What is the current state of VGA/DOS -> DVI/HDMI/LCD scaling?
Posted on 2022-09-16, 03:31
My first VGA monitor was .52 dot pitch, and it was pretty bad, but it was a step up from the CGA I was using...
Re: Looking for the "Megabuild" OPL Passthrough patch for a project
Posted on 2022-08-24, 00:48
OK thanks. Might be a challenge for me to fish all that out, but I'll give it a shot!
Strange card connector on this industrial SBC
Posted on 2022-08-23, 13:34
Filename what is this.jpg File size 403.6 KiB Views 228 views It's probably a Pentium of some sort, so I assume it's a PCI/AGP interface, probably a pre-PICMG or PICMG competitor based on it being an industrial SBC, but I have never seen one like this before.
Looking for the "Megabuild" OPL Passthrough patch for a project
Posted on 2022-08-22, 13:38
I'd like to try to port it into 0.74 for a specific scenario, but I'm having a hard time actually FINDING the patch. It allowed you to utilize a physical OPL device for OPL output, rather than emulation. It was available in Gulikoza's build, and hal9000's megabuild, but already applied to source and …
Re: AWE64 Legacy
Posted on 2022-07-28, 21:01
It's an amazing feat of engineering and I absolutely love what you've created, don't get me wrong! I live in an XT case world though...
Re: AWE64 Legacy
Posted on 2022-07-28, 20:34
I didn't realize how tall that card was. There are a lot of cases it won't fit in with any of those audio cables connected.
Re: Repair CT2940
Posted on 2022-07-16, 00:30
I don't get what happened here. I have a mt32pi, i don't know how you plugged it in wrong to blow the fuse.
Re: Hanging notes and intermittent game lockups with ES1370
Posted on 2022-07-13, 14:23
I love the ES1370, I have like ten of them. 🙁
Re: Anyone assembled one of these ESS1868F clones?
Posted on 2022-07-12, 20:04
https://raw.githubusercontent.com/hkzlab/ES1868_ISA8/master/ISA_ES1868.kicad_pcb ``` (module Inductor_SMD:L_0805_2012Metric_Pad1.15x1.40mm_HandSolder (layer B.Cu) (tedit 5F68FEF0) (tstamp 60E998D6) (at 304.165 150.241 90) (descr "Inductor SMD 0805 (2012 Metric), square (rectangular) end terminal, …
Re: Anyone assembled one of these ESS1868F clones?
Posted on 2022-07-12, 19:51
I think there are some small surface mount components on the back of the card. I was unable to identify those. on a side note, i found my original sbpro 2.0 in a drawer the other day :D I received my boards from jlcpcb yesterday, they look like pullup/down resistors to me. On another ES1868F board …
Re: CR2032 external battery holder?
Posted on 2022-07-12, 18:35
https://www.amazon.com/Alinan-Button-Battery-Storage-Container/dp/B09KTVG1Y5 I bought some of these to replace old mobo batteries with. They work very well. You'll need to have a diode in-line if you replace the actual battery with it. You can use LIR2032 LION batteries if you absolutely need 3.6v, …
About to start tinkering with an ES688FC based sound card, do they support SBMIDI mode for SOFTMPU?
Posted on 2022-07-12, 18:25
They can be hard-coded for IRQ 2/9, which is an important piece of SBMIDI MPU401 compatibility with SOFTMPU right?
Re: Restoring a small form factor 486
Posted on 2022-07-05, 19:26
I have just been using isa backplane. They all seem to have quite capable vga integrated video.
Re: Restoring a small form factor 486
Posted on 2022-07-04, 23:03
For what it's worth I have switched over to sbc systems exclusively for my retro computing, and I have yet to see a 486 sbc with L2 cache, out of about a dozen I have gathered over the years. Ah, well, no need to grieve at not having any L2 cache on my board then at least :) Can see why you did …
Re: Restoring a small form factor 486
Posted on 2022-07-04, 20:49
For what it's worth I have switched over to sbc systems exclusively for my retro computing, and I have yet to see a 486 sbc with L2 cache, out of about a dozen I have gathered over the years.
Re: Converted an ancient AT case to ATX, is case grounding at motherboard screw holes important?
Posted on 2022-07-02, 19:59
It’ll be fine, it’s grounded through the PSU and the expansion cards anyway. Even if you were concerned, you could affix a ground strap between the chassis and one of the mounting holes. That's precisely what I'd thought as well. Seems to be plenty of grounding opportunities but it was one of those …
Re: Tandy 2500SX/33 hangs with "tndy.com" utility
Posted on 2022-07-02, 16:11
dja4055 wrote on 2022-07-02, 12:24: Hi everyone, I restored a Tandy 2500sx/33 with MS-DOS 5 and attempting to run the German Dosreloaded "tndy.com" sound utility to map C0 to 1E0... and it completely hangs. Try vgmplay to verify you have a 3-voice deice at 1e0, and that it's working.
ES1868F card has odd jumpers in-line with audio input/output jacks
Posted on 2022-07-02, 15:59
Not my card, but mine is very much like it. ess1868_with_qs700_wav.jpg You can see next to each input/output audio jack there's a set of four jumpers; they seem to jumper the left/right audio signals to ground. Anyone have any idea why this would be? A hardware "mute" option? Convert a mono input to …
Re: Anyone assembled one of these ESS1868F clones?
Posted on 2022-07-02, 15:55
84TAVeRT wrote on 2022-06-26, 04:33: https://www.mouser.com/ProjectManager/Project … ssID=5b7c15b47a i do not have the io plate, or jacks on this list Thanks a bunch. I have PCBs and ES1868Fs coming just as soon as china allows it...
Converted an ancient AT case to ATX, is case grounding at motherboard screw holes important?
Posted on 2022-07-02, 15:48
System uses one of Sergey Malinov's atx ISA backplanes and supports various single-board computers that I've collected over the years, as my primary MSDOS/windows 3.1 machine. Instead of tapping new screw holes or anything like that, I capped each of the existing mount studs with a plastic stud and …
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