Roland sc-55 on 486 or Pentium?
Posted on 2023-11-12, 13:44
keeping in mind that it would fit on both machines, just to make a few words... which of the two machines would you put it on and why?
Re: Socket 423: Aiming for the Stars
Posted on 2023-11-05, 06:24
supercordo wrote on 2023-11-05, 04:37: I guess we should allow socket 478 but with Willamette Core only. Could rename it to P4 Willamette: Aiming for the stars. First post updated!!! but no doubt it's legit, my IBM Netvista comes from the factory with the 478 and the Willamette. I don't think IBM …
Re: Bought these (retro) hardware today
Posted on 2023-11-03, 08:46
I whis to connect all my IBM to just one monitor, keyboard and mouse…
Re: Bought these (retro) hardware today
Posted on 2023-11-03, 08:46
I whis to connect all my IBM to just one monitor, keyboard and mouse…
Re: Bought these (retro) hardware today
Posted on 2023-11-03, 08:45
I whis to connect all my IBM to just one monitor, keyboard and mouse…
Re: Bought these (retro) hardware today
Posted on 2023-11-03, 08:45
I whis to connect all my IBM to just one monitor, keyboard and mouse…
Re: Suggest CPU Between Pentium200 and Pentium4 1700
Posted on 2023-11-01, 18:02
H3nrik V! wrote on 2023-11-01, 15:55: Hopefully the right picture with some evidence that 1000/100 exists 😀 SECC1 is much nicer….
Re: Aiming for the Stars, Next platform?
Posted on 2023-11-01, 12:05
Pentium 5V?
Re: Suggest CPU Between Pentium200 and Pentium4 1700
Posted on 2023-11-01, 08:42
I have checked, i already have a PIII 500 Slot1. I have to look for something faster on ebay… Since is my “the fastest” ISA-DOS machine (P4 i think will be windows/only) PIII 500 will be fast enough or i spend money for somerhing like PIII 800?
Re: Suggest CPU Between Pentium200 and Pentium4 1700
Posted on 2023-10-31, 09:21
I not think i need the fastest one because the P4, what you think???
Re: Suggest CPU Between Pentium200 and Pentium4 1700
Posted on 2023-10-30, 07:20
In the middle if my socket 7 and Pentium 4 i have a nice slot1 IBM 300GL, accept SLot1 CPU Bus 100Mhz, Tualatin i think is not supported. Wich cpu i choose? The Fastest PentiumII in classic SECC1 (Like 450Mhz) or a Middle PentiumIII (Like 600Mhz) or something fast, like 800Mhz? And Why??? Thank for …
Suggest CPU Between Pentium200 and Pentium4 1700
Posted on 2023-10-29, 21:40
In the middle if my socket 7 and Pentium 4 i have a nice slot1 IBM 300GL, accept SLot1 CPU Bus 100Mhz, Tualatin i think is not supported. Wich cpu i choose? The Fastest PentiumII in classic SECC1 (Like 450Mhz) or a Middle PentiumIII (Like 600Mhz) or something fast, like 800Mhz? And Why??? Thank for …
Re: Memory simm for my PS/2 286
Posted on 2023-10-26, 22:09
pentiumspeed wrote on 2023-10-26, 21:59: 3 chips is same way as 9 chips, just the two chips are 4 bits wide each for 8 bit data, and third chip is 1 bit wide for parity. Cheers, yes, but in the modification scheme the connection of the rightmost chip is modified, but my rightmost one is precisely …
Re: Memory simm for my PS/2 286
Posted on 2023-10-26, 19:40
Magic numbers for 1MB SIMMs IBM P/N 30F5360 IBM FRU 74X8637 or do this mod... http://john.ccac.rwth-aachen.de:8000/misc/ps2cache/ mmmhh.. I read your link well, it doesn't seem like a difficult job to do, the only doubt I have.. if you look at the photo of my simm with 3 chips (which are the 1 MB …
Re: Memory simm for my PS/2 286
Posted on 2023-10-26, 18:47
BitWrangler wrote on 2023-10-26, 18:14: You have to light candles, create an atmosphere, and whisper the FRU to it as you turn it on... so it knows it's the right part. You guys know if are the right part! Vogons is full of extremely competent people 😀
Re: Memory simm for my PS/2 286
Posted on 2023-10-26, 17:52
pentiumspeed wrote on 2023-10-26, 16:13: Supports up to 4MB on board. But being IBM as usual used non-standard modules, you can use 3 chip or 9 chip 1MB modules but have to modify them. Success! Convert regular SIMMs into IBM PS/2 proprietary SIMMs but mine are ibm branded!
Re: Math compro on a 286
Posted on 2023-10-26, 09:03
ok i will try soon as i can and i report ere... thanks for now.
Re: Math compro on a 286
Posted on 2023-10-26, 08:51
so, i have a chance that my copro work correctly?
Re: Math compro on a 286
Posted on 2023-10-26, 08:24
this is my board: However, I tried to install the coprocessor and the configuration utility on the PS/2 floppy disk detects it, but I don't know if it works or not and at what frequency it works.
Re: Math compro on a 286
Posted on 2023-10-26, 06:04
I read that the 287 may operate asynchronously, but at a different speed would depend on the motherboard. AMD's 287 is not capable of running asynchronously, it will always run at 2/3rd of the CPU clock. Any attempt to use an oscillator to control the frequency will cause instabilities, even when …
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