darry wrote on 2020-05-06, 00:43:

According to http://www.os2museum.com/wp/486-overdrive/ […]
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jheronimus wrote on 2020-05-06, 00:30:

Deksor wrote on 2020-05-05, 23:43:

Oh among them is the most useless overdrive ever : the DX2 overdrive 😁

What would you say about an Overdrive SX-20 then? 😀

i-img1200x798-1581262561gctnau31383.jpg

According to http://www.os2museum.com/wp/486-overdrive/

"The lowest end model was an OPD486SX-20, a 40 MHz clock-doubled model."

Talk about brain-dead branding .

Well, the original Overdrives were named after what they were supposed to replace, as I understand it. I.e. the ODP486-SX20 was supposed to replace an SX20. But AFAIK all overdrives were DX/DX2/DX4. But yeah, bad branding. Maybe that's why they changed it along the way .. 🤣

John has written an iteresting article on the subject:
http://www.cpushack.com/UpgradeProcessors.htm … tel486overdrive

Edit: All of which is confirmed in the article from os2museum.com

Today's arrival is a Philips PCA750AF soundcard. Philips had some interesting cards, like an AMD InterWave-based GUS PnP Clone, and this card, which uses a YMF719E-S chip. Got this one for €5 from a Dutch techsite's classifieds section, which I thought was a great price for a legit Yamaha card. Tried it out with Unisound on my latest Socket 7 system, and yeah, sounds like it should under Wolfenstein 3D and Doom! A nice one for the collection.

jheronimus wrote on 2020-05-06, 00:30:

Deksor wrote on 2020-05-05, 23:43:

Oh among them is the most useless overdrive ever : the DX2 overdrive 😁

What would you say about an Overdrive SX-20 then? 😀

i-img1200x798-1581262561gctnau31383.jpg

Well this one fits into a LIF 169 pin socket, which is useful when your motherboard has a soldered 486SX and a 487 upgrade socket. The DX2 overdrive on the other hand is exactly the same as a normal LIF168 DX2.

I had a nice system turn up today. I don't normally buy full systems, but this looked in great conditions and the parts looked to be really good also.

Its a Dan Mini Tower Intel 486 DX2 66mhz built in '94

Intel 486 DX2 66mhz
20mb ram (8x30pin Simm Modules)
Asus isa-486sv2 Rev 3.10 VLB motherboard (battery removed, no apparent damage)
Sound Blaster 16 CT-2830 SB16IDE (Genuine OPL3 onboard)
Promise VLB IDE Controller with 4mb cache
345MB Hard Disk
Cirrus Logic AcuMos ISA VGA Board
Serial/Parallel Card
Logitech Mouse Controller
Panasonic CD-Rom

Case is in lovely condition for its age. I've always liked these upside down towers. Bezel on the CD-ROM is yellowed so will try and sort that out.

I will upgrade the VGA Card to a Cirrus Logic VLB one i have and maybe fit a larger hard disk (1 or 2.1 gig)

Deksor wrote on 2020-05-06, 11:34:

The DX2 overdrive on the other hand is exactly the same as a normal LIF168 DX2.

Depends if the DX2 overdrive is ODP or ODPR.

It isn't exactly the same. It doesn't have test scan signals, different cpu id. I also believe that UP# pin is always driven low on overdrive chips even on ODPR.

Also overdrive chips are always write-through. Ordinary DX2 chips have write-back cache in certain sspecs.

PSU on the bottom... that was really ahead of its time 😀

Bancho wrote on 2020-05-06, 12:53:

I had a nice system turn up today. I don't normally buy full systems, but this looked in great conditions and the parts looked t […]
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I had a nice system turn up today. I don't normally buy full systems, but this looked in great conditions and the parts looked to be really good also.

Its a Dan Mini Tower Intel 486 DX2 66mhz built in '94

Intel 486 DX2 66mhz
20mb ram (8x30pin Simm Modules)
Asus isa-486sv2 Rev 3.10 VLB motherboard (battery removed, no apparent damage)
Sound Blaster 16 CT-2830 SB16IDE (Genuine OPL3 onboard)
Promise VLB IDE Controller with 4mb cache
345MB Hard Disk
Cirrus Logic AcuMos ISA VGA Board
Serial/Parallel Card
Logitech Mouse Controller
Panasonic CD-Rom

Case is in lovely condition for its age. I've always liked these upside down towers. Bezel on the CD-ROM is yellowed so will try and sort that out.

I will upgrade the VGA Card to a Cirrus Logic VLB one i have and maybe fit a larger hard disk (1 or 2.1 gig)

Very nice. Now you just need to put Microsoft Bob on Dan.

Bancho wrote on 2020-05-06, 12:53:

I had a nice system turn up today. I don't normally buy full systems, but this looked in great conditions and the parts looked to be really good also.

nice 😁
I'm still always looking out for those inverted AT cases, but they always get crazy expensive.
...

got a few sound cards :3

Terratec Maestro 16/95 Ver. 1.0 (16/96)
in box with tiny speakers and all goodies, partly still sealed, I think this one is actually new.

Terratec Base-1, I already had one of these, but got it for the wavetable board, Terratec WT64

míro Sound PCM1 Pro... after missing out on the one in a scrap lot I now got one with manuals :3

Guillemot Maxi Studio ISIS, seems complete

imi wrote on 2020-05-06, 13:48:

nice :D I'm still always looking out for those inverted AT cases, but they always get crazy expensive. ... […]
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Bancho wrote on 2020-05-06, 12:53:

I had a nice system turn up today. I don't normally buy full systems, but this looked in great conditions and the parts looked to be really good also.

nice 😁
I'm still always looking out for those inverted AT cases, but they always get crazy expensive.
...

just flip a case upside down?

that is not the same :p
the inverted cases have a very distinctive style, less tall, with the drive bays shifted to the side.

Back in the day, one of local pc stores that I worked at and many stores around used those fat and short towers with those plastic rails, these were specially made so drives is not loose when installed.

Cheers,

My Slot-1 rig is slowly getting there.

Bancho wrote on 2020-05-06, 12:53:

https://i.imgur.com/dlDAEYTl.jpg https://i.imgur.com/4vtZo45l.jpg […]
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This is my favourite Baby AT case style, I hope one day I will find one nearby without having to pay 100€ for shipping.

My P133 is in an inverted case. It is cool indeed 😀

Bancho wrote on 2020-05-06, 12:53:

I had a nice system turn up today. I don't normally buy full systems, but this looked in great conditions and the parts looked to be really good also.

<snip>

Looks like it came from the same factory as this case, only a bit later 😀

^ that's the exact case I want ^^

Cyrix200+ wrote on 2020-05-06, 14:57:

Looks like it came from the same factory as this case, only a bit later :) […]
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Bancho wrote on 2020-05-06, 12:53:

I had a nice system turn up today. I don't normally buy full systems, but this looked in great conditions and the parts looked to be really good also.

<snip>

Looks like it came from the same factory as this case, only a bit later 😀

I had one of those back in 1990’s
I never used it however because I did not have the hard drive rails.
I regret sending it to the recyclers.

Nice case.

I got a auzentech prelude and forte a couple of weeks and just got around to using them. The forte needs a heat sink because the rev.1 cards like to kill themselves.

imi wrote on 2020-05-06, 15:00:

^ that's the exact case I want ^^

My dad's 386SX 16MHz came in this case. That's the machine I gamed on for a loooong time 😀

I was very happy when I finally found this case again. I have two now...

Cyrix200+ wrote on 2020-05-06, 15:23:

have two now...

oh nice, so that means I can have one? :3c