Re: Amstrad Mega PC

Posted on 2022-04-25, 12:03

by

by AndrewK2685

in Marvin \ System Specs

in Marvin \ System Specs

Hm this reminds me some errors I have in some later systems when I enable the "system BIOS cacheable" option. Try turning off all cache & shadowing associated settings - I don't remember if there are any in MegaPC though

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Re: 3 (+3 more) retro battle stations

Posted on 2022-04-01, 11:59

by

by AndrewK2685

in Marvin \ System Specs

in Marvin \ System Specs

For me yes, I had a bit less problems with the DTC. It was not trouble free though. If I remember correctly I had some issures with Win98SE and reverted to MS driver don't remember the details though and haven't tested NT4. For the promise one maybe there was something wrong with my setup, can't …

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Re: 3 (+3 more) retro battle stations

Posted on 2022-03-31, 10:40

by

by AndrewK2685

in Marvin \ System Specs

in Marvin \ System Specs

One of the reasons I switched to the DTC 2278EB was that I got so many problems with the promise drivers. For me even win3.x drivers hang the system and I couldn't start windows. I have a feeling though that the stock windows NT & 95 drivers from MS would be fine. I guess you need to bench the …

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Re: Amstrad Mega PC

Posted on 2022-03-22, 16:07

by

by AndrewK2685

in Marvin \ System Specs

in Marvin \ System Specs

Nice. It looks a very good job judgereinhold! Well done saving that motherboard 😀

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Re: Amstrad Mega PC

Posted on 2022-03-21, 11:28

by

by AndrewK2685

in Marvin \ System Specs

in Marvin \ System Specs

From what I know from mine, you need to connect the mega drive card to the motherboard connector or jumper it to pass the video & audio signals. as for post error, maybe stops because it detects no CMOS battery try pressing F1 and see what happens (I think this is the "continue" button) or del (Bios …

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Re: S3 ViRGE VLB project (or " Making a Concurrent for Creative 3D Blaster VLB" )

Posted on 2022-01-04, 15:22

by

by AndrewK2685

in Marvin \ Video

in Marvin \ Video

I'm also interested, especially if it has a feature connector onboard

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Re: ACTION REWIND: a clone of the original IBM PC Action Replay card

Posted on 2021-12-20, 16:55

by

by AndrewK2685

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

awesome project guys

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Re: 3 (+3 more) retro battle stations

Posted on 2021-12-16, 11:28

by

by AndrewK2685

in Marvin \ System Specs

in Marvin \ System Specs

My first PC was a 286 I think from around 1989-1990. A VLSI based one. Now I haven't played much with other 286 motherboards, but taken all the ones I've seen this VLSI one was by far the fastest and had perfect design. It had 1MB onboard RAM and supported SIPP sockets for expansion. AMI Bios & …

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Re: 3 (+3 more) retro battle stations

Posted on 2021-10-27, 11:11

by

by AndrewK2685

in Marvin \ System Specs

in Marvin \ System Specs

I think It's this one, so it must have an onboard voltage regulator (goes down to 1.3V). https://kentie.net/article/deskproupgrade/MS6905.PDF It was for coppermines though, so you will also need that converter I posted above to make it work. I think I set it at 1.45V and motherboard was supplying …

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Re: 3 (+3 more) retro battle stations

Posted on 2021-10-26, 10:28

by

by AndrewK2685

in Marvin \ System Specs

in Marvin \ System Specs

Hm I'm not sure about the excact voltage of mine - I'm away from it now But the slotkey was for coppermines at least. I think once I checked the Vcore in bios and it was even above that of coppermines (sth like 2.0V maybe, I don't remember), so I assumed this mod also took care of the lower Vcore …

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Re: 3 (+3 more) retro battle stations

Posted on 2021-10-25, 10:33

by

by AndrewK2685

in Marvin \ System Specs

in Marvin \ System Specs

I ended up using some modded adapters for Tualatins, like this https://www.ebay.co.uk/itm/283583586110?hash=item4206e61f3e:g:8vMAAOSw88NdWCZ~ or even better https://www.ebay.co.uk/itm/281238323137?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649 These fitted in a simple slot1 to s370 …

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Re: Amstrad Mega PC

Posted on 2021-09-26, 15:44

by

by AndrewK2685

in Marvin \ System Specs

in Marvin \ System Specs

I'm also interested in one and so excited its almost here 😁 keep it up

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Re: MPEG-1 decoder add-on board for [S3 Vision 968] Diamond Stealth 64 VRAM VLB

Posted on 2021-09-14, 13:25

by

by AndrewK2685

in Marvin \ Video

in Marvin \ Video

Thanks for that. It seems to go on an IC that is hidden underneath the bios ROM. I'll do more tracing when I have a bit more time. Hopefully is an easy fix. I'm curious though why an IRQ setting of the MPEG player will cause the VRAM to malfunction

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Re: MPEG-1 decoder add-on board for [S3 Vision 968] Diamond Stealth 64 VRAM VLB

Posted on 2021-09-13, 19:09

by

by AndrewK2685

in Marvin \ Video

in Marvin \ Video

Nice find! I was also searching for the rare MVP 2000 but still no luck. In the meantime, I suppose you've already seen the addenums from here (audio cable w ferite core & IRQ jumper settings): https://retronn.de/imports/hwgal/hw_graphics_card_diamond_mvp-2000_front.html#0 And a question. Have you …

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Re: S3 ViRGE VLB project (or " Making a Concurrent for Creative 3D Blaster VLB" )

Posted on 2021-09-13, 10:01

by

by AndrewK2685

in Marvin \ Video

in Marvin \ Video

Nice one! I'm interested as well, but I'll wait for the next round, as I need it to also have a feautre connector. Keep up the good work

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Re: Short on ISA slots? Try this.

Posted on 2021-07-14, 13:13

by

by AndrewK2685

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Nice project. I didn't know it was so simple to extend your ISA's I've only seen solutions from comanies that do limited transfers and require PSU on both backplane and motheboard and also need to simultaneously switch them on, like this: http://www.acces-usa.com/?p=/isa/ptrc_at.html they also have …

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Re: S3 ViRGE VLB project (or " Making a Concurrent for Creative 3D Blaster VLB" )

Posted on 2021-07-04, 17:41

by

by AndrewK2685

in Marvin \ Video

in Marvin \ Video

Nice work. I bet a lot of people are interested in this. keep up Also, at later stages if possible add a feature connector 😀

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Re: New sound card project: AWE64 Legacy

Posted on 2021-04-23, 14:09

by

by AndrewK2685

in Marvin \ Sound

in Marvin \ Sound

Thanks for the update guys I look forward for an assembled unit as well. 😀

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Re: New sound card project: AWE64 Legacy

Posted on 2021-02-13, 22:25

by

by AndrewK2685

in Marvin \ Sound

in Marvin \ Sound

Congrats on the release and good luck!! I'm also interested in an assembled unit, when these will be available. Also, from your pics I noticed an array of holes (maybe for pins?) mentioned as DBG Just out of curiosity what are these for? Also, is it possible to send us the manual to understand more …

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Re: 3 (+3 more) retro battle stations

Posted on 2021-02-07, 17:38

by

by AndrewK2685

in Marvin \ System Specs

in Marvin \ System Specs

Nice one pshipkov! I'd expect that for games, since these extra MHz on FSB can make a difference (for GPU). On CPU hungry apps though I'd expect the opposite. Haven't tried the 50MHz FSB though not sure my GPU can handle it, but i'll give it a go. My Jetway also report it wrong (150MHz) but every …

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