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Re: I have the TURBO button in the Pentium75, what is it for?

Posted on 2021-05-11, 20:37

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

snufkin wrote on 2021-05-11, 18:25: AlessandroB wrote on 2021-05-11, 18:16: i have tried it, seems not change anithing Did you try rebooting after changing it? I think I read somewhere that some chipsets (sorry, it's all a bit vague) only read the status of the turbo input on startup. yes, nothing …

Re: I have the TURBO button in the Pentium75, what is it for?

Posted on 2021-05-11, 18:16

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

i have tried it, seems not change anithing

I have the TURBO button in the Pentium75, what is it for?

Posted on 2021-05-08, 13:25

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

In my IBM 330 P75 I discovered that there is a pair of contacts with TURBO on them (Do I try to short the two pins or do I burn everything?) . What is it for in Pentium? I thought it existed only up to 486. Second question: what is the correct amount of RAM for a P75 running DOS and WIN95 / 98? …

Re: IBM 5150, correct period considerations and more

Posted on 2021-05-06, 14:05

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I got 16 "Sharp LH21256-12" branded ram chips, can I use them to expand my IBM 5150 mainboard? tnks

Re: Golden age of computing for personal computers

Posted on 2021-04-05, 18:58

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

In some ways, it's now, for a typical user. nope nope nope nope. I definitely agree with jasa1063 on this one, todays computing platform take so much control away from you that there is really barely anything "personal" about it anymore, you are merely a number, an ID to be milked from ADs. it …

Re: 2 very different computers to cover many years

Posted on 2021-01-20, 18:32

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

everyone has their own needs and their sweet spot. Mine is DX2. I have however noticed (I also had a DX2 recently) that DX2 is a little too slow for the games I want to play (Doom also doesn't work as well as I would like). In my opinion also the Pentium75 has a great charm and I consider it a valid …

Re: 2 very different computers to cover many years

Posted on 2021-01-20, 14:18

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Considering that the fm2 motherboard has a PCI slot, inserting an old PCI video card, could the system work under windows98 too?

Re: 2 very different computers to cover many years

Posted on 2021-01-20, 10:44

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

As a target I have always had around the DX2 66 and I thought the P75 could work everything I used on the DX2 but better. For very old games I always have a 5150 available if i really want to experiment, but I don't think I go below DX2 as hardware requirements. For games that run on windows I have …

Re: 2 very different computers to cover many years

Posted on 2021-01-19, 22:01

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

i think winXP is the start for a hyper-powerful computer like FM2. For dos, win95/98 i left first era pentium ti play with. My mainboard gas 1 PCI slot, teorically i can install a voodoo card i think. the loss of the isa slot indicates these modern computers to winxp as a minimum

2 very different computers to cover many years

Posted on 2021-01-19, 19:49

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I was thinking of using an IBM Pentium75 with isa slot for DOS games (you know, SB Pro etc.) an AMD FM2 + for games from windowsXP onwards, do you think it may be a good idea to have only 2 computers that manage everything natively?

Re: When did you purchase your first 386 / 486 Computer? Availability vs the early 90's affordability norm.

Posted on 2021-01-01, 22:54

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

1989 - Amiga 500 1 Mb ram 1992 - 486DX2, 4Mb, 250HD, Trident Svga VLB, SBPro1 1994/2007 - a lot, VERY LOT of PC: Pentium 133, 166, 200, 233MMX, PentiumII 266, Celeron300A, Duron, AthlonXP, Barton, PentiumD... 2007 - Macmini G4 (just to test the SWITCH") 2007 - Today MacBook Pro, Macbook Air, MACPro …

Re: When did you purchase your first 386 / 486 Computer? Availability vs the early 90's affordability norm.

Posted on 2020-12-31, 17:06

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

1989 - Amiga 500 1 Mb ram 1992 - 486DX2, 4Mb, 250HD, Trident Svga VLB, SBPro1 1994/2007 - a lot, VERY LOT of PC: Pentium 133, 166, 200, 233MMX, PentiumII 266, Celeron300A, Duron, AthlonXP, Barton, PentiumD... 2007 - Macmini G4 (just to test the SWITCH") 2007 - Today MacBook Pro, Macbook Air, MACPro …

Re: Upgrading P75 with powerleap + voodoo2. How powerful will it become?

Posted on 2020-12-04, 10:39

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

ok, i think i have the proper information. Now the challenge become: find a powerlap 😁

Re: Upgrading P75 with powerleap + voodoo2. How powerful will it become?

Posted on 2020-12-03, 13:21

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

ok, if you tell me that 1998 can be the red line i trust you.

Re: Upgrading P75 with powerleap + voodoo2. How powerful will it become?

Posted on 2020-12-03, 02:37

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes, my computer have Triton1 Chipset, not so bad i think. A lot better (faster, more compatible) than the OPTi Viper, but still limited. Max RAM is 128MB, and only 64MB of that can be cached (but with K6-3 non-issue). It would probably do 90% of speed of K6-3 on i430TX with 66MHz FSB, which would …

Re: Upgrading P75 with powerleap + voodoo2. How powerful will it become?

Posted on 2020-12-02, 14:22

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes, my computer have Triton1 Chipset, not so bad i think.

Re: Upgrading P75 with powerleap + voodoo2. How powerful will it become?

Posted on 2020-12-02, 06:17

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

viper32cm wrote on 2020-12-02, 00:08: Does you P75's motherboard have cache? not for now but i can install until 512k of cache

Upgrading P75 with powerleap + voodoo2. How powerful will it become?

Posted on 2020-12-01, 20:20

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have been posting several messages lately comparing my current beautiful IBM P75 retrocomputer to the SBC pentiumIII. But it occurred to me to ask you one thing: if I could find a "powerleap" type adapter to plug into my Triton1 motherboard and I could run a K6III 400Mhz (66x6). if I also included …

Re: Pentium 90 @ 120Mhz

Posted on 2020-12-01, 05:54

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Get a Pentium 166 PGA. like this: https://www.cpu-world.com/sspec/SY/SY037.html I have one and I can set it to any existing pentium classic frequency, both multiplier and bus without the slightest problem. Probably its production process is the last of the pentium1 series given the typical package …

Re: 486 SBC in Socket 7 or Slot 1 Mainboard?

Posted on 2020-11-30, 22:06

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

What would happen if I plugged a 486 SBC into a Socket 7 or Slot 2 motherboard? The RAM, CPU, BIOS and Controller would all be on the SBC. Could I use this to make an ATX or uATX 486? in my opinion you could follow a path that i have been thinking about for some time, since I am also passionate …

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