Re: OPN music on an ISA sound card?

Posted on Today, 02:18

by

by Tiido

in Marvin \ Sound

in Marvin \ Sound

I have forgotten that card even exists lol. But yeah, YM2151 will be able to do most stuff that YM2612 can except SSG-EG mode and PCM channel and luckily SSG-EG is not widely used but PCM channel is used, however. SAA1099 should be able to do very decent simulation of VDP PSG noise and tone …

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Re: dISAppointment - LPC to ISA adapter - ISA on modern motherboards

Posted on Today, 02:04

by

by Tiido

in Release Announcements

in Release Announcements

Jaa, I want those 3 slots that the physical space can give me, and it was a pain to get things routed. I could have used 4 layers but I had to try to see if 2 will work out and it did ~ I was looking at MC34063 but it is only slightly cheaper, needs a few more parts and I actually have not used it …

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Re: Bad caps

Posted on Yesterday, 10:57

by

by Tiido

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

In general the capacitors are there for a reason and when one is bad (or even more of them) you're are expected to have issues. Often parts of same type fail simultaneously, and not always with visible signs.

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Re: dISAppointment - LPC to ISA adapter - ISA on modern motherboards

Posted on Yesterday, 10:31

by

by Tiido

in Release Announcements

in Release Announcements

PCB is made, one day it'll get ordered with all the parts necessary too and any experiments to actually get this going... Filename LPC2ISA.png File size 84.8 KiB Views 107 views File comment Funstuff !

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Re: Wrong colors when 2nd HDD installed

Posted on Yesterday, 05:27

by

by Tiido

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I assume this is a machine that uses an ISA based IO card, in which case cable can make a big difference when the IO card has no bus buffers. Without these buffers the system can get unreliable from excess cable capacitance that will be directly put on the ISA bus itself. This is one reason why I …

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Re: Weren't sound artists frustrated to know that very few players would be hearing the true sound of their creations?

Posted on Yesterday, 02:07

by

by Tiido

in Marvin \ Sound

in Marvin \ Sound

Nowdays there's enough computing power to do realtime physical modelling and potential to get very close to live playback is certainly within reach. I know Yamaha has made some products in past that were very convincing and I'm sure there are many softsynths out there that try also.

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Re: Bought these (retro) hardware today

Posted on 2024-04-25, 07:58

by

by Tiido

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It is a some sort of motor controller, that has suffered a catastrophic failure...

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Re: Pentium PRO?

Posted on 2024-04-25, 04:55

by

by Tiido

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Technically it is possible for a VLB device to appear as a PCI one, by listening PCI conf mechanism accesses and responding to them as if it was a PCI device.

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Re: dISAppointment - LPC to ISA adapter - ISA on modern motherboards

Posted on 2024-04-24, 23:59

by

by Tiido

in Release Announcements

in Release Announcements

LDRQ(s) at a header with rest of LPC would make life easier for sure, especially with a BIOS that plays along. Tiido, this forum holds a hundreds of leaked MB schematics, most of them are for Gigabyte so you're lucky man :) https://smd.db-x7.ru/load/skhemy_materinskikh_plat/gigabyte/gigabyte_ga_p67a …

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Re: dISAppointment - LPC to ISA adapter - ISA on modern motherboards

Posted on 2024-04-24, 11:39

by

by Tiido

in Release Announcements

in Release Announcements

...and that resistor is located, thänk you very much ~ Now there's a need to sort out the actual bridge business, buy some parts, get a PCB going etc.

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Re: dISAppointment - LPC to ISA adapter - ISA on modern motherboards

Posted on 2024-04-24, 10:29

by

by Tiido

in Release Announcements

in Release Announcements

I am thinking of getting ISA going on my Gigabyte GA-B85M-D3H that I have, I have managed to find a schematic of it and I know that its other LDRQ signal goes to a 8.2k resistor called NR54 but I have not found any of those magical boardview files. There aren't too many 8.2k resistors and arrays …

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Re: ali/uli m5451 ac'97 audio controller driver win 98

Posted on 2024-04-24, 02:50

by

by Tiido

in Marvin \ Sound

in Marvin \ Sound

A link from this list might work : https://www.downloadwindowsdrivers.info/pci/v … ubsys_00011179/ (that site is great for things like this)

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Re: Plastic gotten sticky around laptop keyboard.

Posted on 2024-04-23, 22:33

by

by Tiido

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

As long as you are cleaning a metal chassis, plastic ones are going to deform quite a lot...

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Re: Roland RA-50 Mod

Posted on 2024-04-20, 22:39

by

by Tiido

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

You need the inverter chip only if you are going to use two 512KB EPROMs. In that case original A19 goes into !CE line of original (as it does already) and inverted A19 goes into !CE of the new ROM, all other pins are parallel. All other unused sections of the inverter chip have to have all the …

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Re: Bought these (retro) hardware today

Posted on 2024-04-20, 01:39

by

by Tiido

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Excellent ~

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Re: Bought these (retro) hardware today

Posted on 2024-04-19, 23:42

by

by Tiido

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Doh... so... the continuity test gives a solid beep. However, when I measure resistance across the two points it is 9.9 ohms in both directions and doesn't change. It's just relatively low resistance I guess... not a short to ground. ... so this was probably all a waste of time, right? Other than …

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Re: Bought these (retro) hardware today

Posted on 2024-04-19, 22:16

by

by Tiido

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

That is strange, I would think in a case like this, the tantalum wouldn't be doing anything... it would help to know exactly what the circuit is (little bit of schematic). Is it a dead short or just low resistance (that doesn't change with time) ? And does it measure same in both directions ? That …

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Re: Bought these (retro) hardware today

Posted on 2024-04-19, 07:53

by

by Tiido

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

so is there ever a normal (not failure) situation where both legs of a tantalum, in circuit, would appear shorted? Not that I know of, I certainly cannot think of any situations. Only way resistance that low would read is if there's another parallel component that would exhibit such a resistance, …

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Re: How to calculate Pixel Clock

Posted on 2024-04-19, 07:07

by

by Tiido

in Marvin \ Video

in Marvin \ Video

Those calculations apply perfectly on the side that generates the image, which is what is being dealth with and what will allow to calculate pixel clock for the custom resolution that is bein created while giving info about how all the other parameters fit in and possibly make a resolution with …

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Re: Bought these (retro) hardware today

Posted on 2024-04-19, 05:55

by

by Tiido

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

That is a very nice score !

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