Reply 57661 of 57674, by Susanin79
Two LOGI motherboards from the scrapyard
Picked up two not-so-common LOGI branded boards today — an XT and a 286. Both have clearly “seen things,” but I’m optimistic they can be brought back to life.
Reply 57662 of 57674, by Ozzuneoj
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Susanin79 wrote on Yesterday, 14:49:Two LOGI motherboards from the scrapyard
Picked up two not-so-common LOGI branded boards today — an XT and a 286. Both have clearly “seen things,” but I’m optimistic they can be brought back to life.
Those are so cool looking! I have never seen a white PCB motherboard from either of those eras. In fact, I don't recall seeing white motherboards until maybe the Socket 478 era when Soltek started doing it.
Reply 57663 of 57674, by Nexxen
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Susanin79 wrote on Yesterday, 14:49:Two LOGI motherboards from the scrapyard
Picked up two not-so-common LOGI branded boards today — an XT and a 286. Both have clearly “seen things,” but I’m optimistic they can be brought back to life.
Please open a thread fro these. Can't wait to see what works.
PC#1 Pentium 233 MMX - 98SE
PC#2 PIII-1Ghz - 98SE/W2K
"One hates the specialty unobtainium parts, the other laughs in greed listing them under a ridiculous price" - kotel studios
Bare metal ist krieg.
Reply 57664 of 57674, by douglar
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Ozzuneoj wrote on Yesterday, 15:06:Susanin79 wrote on Yesterday, 14:49:Two LOGI motherboards from the scrapyard
Picked up two not-so-common LOGI branded boards today — an XT and a 286. Both have clearly “seen things,” but I’m optimistic they can be brought back to life.Those are so cool looking! I have never seen a white PCB motherboard from either of those eras. In fact, I don't recall seeing white motherboards until maybe the Socket 478 era when Soltek started doing it.
They have a really striking look, that's for sure. Are you going to keep the non-standard leading edge style power connector or will you put in a P8 & P9 ?
Reply 57665 of 57674, by Susanin79
douglar wrote on Yesterday, 15:46:They have a really striking look, that's for sure. Are you going to keep the non-standard leading edge style power connector or will you put in a P8 & P9 ?
Not sure, may be temporary replace them and return back when boards would be repaired.
Reply 57666 of 57674, by Susanin79
Nexxen wrote on Yesterday, 15:17:Please open a thread fro these. Can't wait to see what works.
This would be a good idea. Will keep you posted.
Reply 57667 of 57674, by Ozzuneoj
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Susanin79 wrote on Yesterday, 16:03:douglar wrote on Yesterday, 15:46:They have a really striking look, that's for sure. Are you going to keep the non-standard leading edge style power connector or will you put in a P8 & P9 ?
Not sure, may be temporary replace them and return back when boards would be repaired.
This probably goes without saying, but double check the pinout. That connector could use a totally different pinout than a standard P8+P9.
Reply 57668 of 57674, by Susanin79
Ozzuneoj wrote on Yesterday, 16:15:Susanin79 wrote on Yesterday, 16:03:douglar wrote on Yesterday, 15:46:They have a really striking look, that's for sure. Are you going to keep the non-standard leading edge style power connector or will you put in a P8 & P9 ?
Not sure, may be temporary replace them and return back when boards would be repaired.
This probably goes without saying, but double check the pinout. That connector could use a totally different pinout than a standard P8+P9.
Of course, I will trace the pins with the ISA slot power pins, just not to burn something else)
Reply 57669 of 57674, by PcBytes
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Another peculiar board in my collection. AM2NF3-VSTA.
"Enter at your own peril, past the bolted door..."
Main PC: i5 3470, GB B75M-D3H, 16GB RAM, 2x1TB
98SE : P3 650, Soyo SY-6BA+IV, 384MB RAM, 80GB
Reply 57670 of 57674, by sunkindly
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I bought a Socket 7 board with a Cyrix 6x86 already with it...not sure yet if it's going to replace the Socket 3 / 5x86 or await its own case. It supports 2.8V and dual voltage, would it theoretically work with a 2.9V Cyrix MII? Officially it supports up to a Pentium MMX 200 but there's not much on the board itself. Either way, I think figuring out what I want for a mid 90s build has been the most difficult of them all.
SUN85-87: NEC PC-8801mkIIMR
SUN88-92: Northgate Elegance | 386DX-25 | Orchid Fahrenheit 1280
SUN94-96: BEK-P407 | Cyrix 5x86 120MHz | Tseng Labs ET6000
SUN98-01: ABIT BF6 | Pentium III 1.1GHz | 3dfx Voodoo3 3000
Reply 57671 of 57674, by PC@LIVE
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sunkindly wrote on Yesterday, 18:40:I bought a Socket 7 board with a Cyrix 6x86 already with it...not sure yet if it's going to replace the Socket 3 / 5x86 or await its own case. It supports 2.8V and dual voltage, would it theoretically work with a 2.9V Cyrix MII? Officially it supports up to a Pentium MMX 200 but there's not much on the board itself. Either way, I think figuring out what I want for a mid 90s build has been the most difficult of them all.
I'm currently working on a socket 7, MB ACORP A-5VIA3P chipset VIA VPX, CPU Cyrix MII-333 (3.5X 75), you can see it on my page on MB tests, it's not the first Cyrix I have, but it's the last one I built, let's say I don't mind, but personally I prefer AMD K6 CPUs, especially those with integrated L2 cache.
Theoretically you could put any S.7 CPU on it, using an interposer, realistically you can only if the regulators are switching, while with linear ones, it is better not to exceed 200 MHz, or at most 233 MHz, which for a Cyrix is equivalent to a MII-266 or 300.
AMD 286-16 287-10 4MB HD 45MB VGA 256KB
AMD 386DX-40 Intel 387 8MB HD 81MB VGA 256KB
Cyrix 486DLC-40 IIT387-40 8MB VGA 512KB
AMD 5X86-133 16MB VGA VLB CL5428 2MB and many others
AMD K62+ 550 SOYO 5EMA+ and many others
AST Pentium Pro 200 MHz L2 256KB
Reply 57672 of 57674, by sunkindly
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PC@LIVE wrote on Yesterday, 20:03:sunkindly wrote on Yesterday, 18:40:I bought a Socket 7 board with a Cyrix 6x86 already with it...not sure yet if it's going to replace the Socket 3 / 5x86 or await its own case. It supports 2.8V and dual voltage, would it theoretically work with a 2.9V Cyrix MII? Officially it supports up to a Pentium MMX 200 but there's not much on the board itself. Either way, I think figuring out what I want for a mid 90s build has been the most difficult of them all.
I'm currently working on a socket 7, MB ACORP A-5VIA3P chipset VIA VPX, CPU Cyrix MII-333 (3.5X 75), you can see it on my page on MB tests, it's not the first Cyrix I have, but it's the last one I built, let's say I don't mind, but personally I prefer AMD K6 CPUs, especially those with integrated L2 cache.
Theoretically you could put any S.7 CPU on it, using an interposer, realistically you can only if the regulators are switching, while with linear ones, it is better not to exceed 200 MHz, or at most 233 MHz, which for a Cyrix is equivalent to a MII-266 or 300.
Ah! I compared ours and unfortunately this board only supports up to a 3x multiplier and 66MHz FSB. It has a 512KB cache on stick with it which is interesting. It's all good though, I'm not really seeking performance moreso something unique (and therefore some self-imposed suffering haha). I was thinking about Super Socket 7 but it'd overlap a little too much with Slot 1 which I already have.
SUN85-87: NEC PC-8801mkIIMR
SUN88-92: Northgate Elegance | 386DX-25 | Orchid Fahrenheit 1280
SUN94-96: BEK-P407 | Cyrix 5x86 120MHz | Tseng Labs ET6000
SUN98-01: ABIT BF6 | Pentium III 1.1GHz | 3dfx Voodoo3 3000
Reply 57673 of 57674, by bjwil1991
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Bought some hardware for my IBM PC Portable 5155:
Extended RAM card
JoyClock (Joystick + RTC) card
SAAYM sound card
XT-SD card adapter (XT-IDE)
And some PITs for my 5150 - Intel P8253-5, AMD P8253-5, and NEC D8253-5 since I think the original one is actually dead.
Discord: https://discord.gg/U5dJw7x
Systems from the Compaq Portable 1 to Ryzen 9 5950X
Twitch: https://twitch.tv/retropcuser
Reply 57674 of 57674, by PC@LIVE
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sunkindly wrote on Today, 02:04:PC@LIVE wrote on Yesterday, 20:03:sunkindly wrote on Yesterday, 18:40:I bought a Socket 7 board with a Cyrix 6x86 already with it...not sure yet if it's going to replace the Socket 3 / 5x86 or await its own case. It supports 2.8V and dual voltage, would it theoretically work with a 2.9V Cyrix MII? Officially it supports up to a Pentium MMX 200 but there's not much on the board itself. Either way, I think figuring out what I want for a mid 90s build has been the most difficult of them all.
I'm currently working on a socket 7, MB ACORP A-5VIA3P chipset VIA VPX, CPU Cyrix MII-333 (3.5X 75), you can see it on my page on MB tests, it's not the first Cyrix I have, but it's the last one I built, let's say I don't mind, but personally I prefer AMD K6 CPUs, especially those with integrated L2 cache.
Theoretically you could put any S.7 CPU on it, using an interposer, realistically you can only if the regulators are switching, while with linear ones, it is better not to exceed 200 MHz, or at most 233 MHz, which for a Cyrix is equivalent to a MII-266 or 300.Ah! I compared ours and unfortunately this board only supports up to a 3x multiplier and 66MHz FSB. It has a 512KB cache on stick with it which is interesting. It's all good though, I'm not really seeking performance moreso something unique (and therefore some self-imposed suffering haha). I was thinking about Super Socket 7 but it'd overlap a little too much with Slot 1 which I already have.
Ok
Well it seems strange to me that you can't use the multi 3.5X, to do 233 MHz (more than 200 MHz), just set 1.5X and the rest is done by the CPU, at least with 6X86MX and MII it works like that.
If, on the other hand, it is not possible to use CPUs faster than 200 MHz, it is possible that it depends on linear regulators, and the older S.7s are all like that.
Usually in motherboards with Intel chipsets, I don't recommend the Cyrix, VIA or other chipsets instead, are more suitable for creating that particular PC, although perhaps the final result could be quite slow, for a 200 MHz PC or a little more.
AMD 286-16 287-10 4MB HD 45MB VGA 256KB
AMD 386DX-40 Intel 387 8MB HD 81MB VGA 256KB
Cyrix 486DLC-40 IIT387-40 8MB VGA 512KB
AMD 5X86-133 16MB VGA VLB CL5428 2MB and many others
AMD K62+ 550 SOYO 5EMA+ and many others
AST Pentium Pro 200 MHz L2 256KB