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PCs and Clones | Forum profile
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Forum profile page for PCs and Clones on http://vintage-computer.com.
This report page is the aggregated overview from a single forum: PCs and Clones, located on the Message Board at http://vintage-computer.com.
This forum profile page summarizes the general forum statistics such as: Users Activity, Forum Activity, and Top Authors, which are reported in either a table or graph below for a given reporting time period.
Additional forum profile information for "PCs and Clones" on the Message Board at http://vintage-computer.com is also shown in the following ways:
1) Latest Active Threads
2) Hot Threads for Last Week
Warning: These statistics are generated using 'best efforts' and can experience delays and reporting errors at times. Please note that such statistics do not constitute a forum's popularity and/or exact posting volumes at any given reporting period.
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Posting activity on PCs and Clones:
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Week
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Month
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3 Months
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Threads:
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28
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82
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289
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Post:
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116
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399
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1,383
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PCs and Clones Posting activity graph:
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Top authors during last week:
user's latest post:
5.25 floppy drive to USB?
Published (2009-11-29 11:28:00)
The easiest approach would be to find someone with a 5.25" drive-equipped PC to do the transfer for you.
user's latest post:
XT IDE Ordering interest? (Was:...
Published (2009-11-29 11:43:00)
Quote: Originally Posted by digger Just let me know if someone already thought of this and you guys are already way ahead of me on this one, or if this offer might be interesting to some of you. It is an interesting offer. You would need to find not only a PCB fab place, but also a local electronic supply. Think your up for it? I'll PM you over this coming week and we can see if it is feasible and worth while.
user's latest post:
A piece of curious hardware... -...
Published (2009-11-28 16:27:00)
Amazing, ISA on a modern computer. I guess that solves that problem. I have a feeling, though, that my dream of running something modern with a mono card (not VGA) would not be easily accommodated in software any more. Slightly further afield: has anybody seen a TTL monochrome card for PCI?
user's latest post:
A piece of curious hardware... -...
Published (2009-11-29 04:21:00)
Quote: Originally Posted by FishFinger There are no PCI mono cards that I know of. I don't think they even made any 16-bit ISA ones. There's plenty of 16-bit ISA cards with two outputs: Analog to VGA monitors, and TTL to CGA/MDA/EGA ones. BTW, just thinking: wouldn't it be possible to build a simple VGA->MDA converter? Probably all you need to do in hardware is amplify 0.7 V to 5 V. Of course, you also need 18 kHz...
user's latest post:
ST506 help..
Published (2009-11-28 17:56:00)
This might be interesting to read... http://www.vintage-computer.com/vcfo...ighlight=st506
user's latest post:
XT IDE Ordering interest? (Was:...
Published (2009-11-23 14:40:00)
Thanks for the info. Certainly reasonable and well justified but I can't do it so count me "out".
user's latest post:
Old ISA cards IBM - Page 2 - The...
Published (2009-11-22 07:58:00)
A few more controller cards. DTC Data Tech EIDE Ultima Pro WDC WDXT 300F Video card MACHSPEED 9239 has WDC chip on it ?. I will put some more on here today and pics of these. I have boxes of software also. Some computers and boards I cant get to yet bit I will post them as I can.
user's latest post:
Specs for IBM 5150438 XT Power...
Published (2009-11-26 07:54:00)
Quote: Originally Posted by dongfeng Well, I bought it when I was there... I suppose the clue is in your name Quote: Originally Posted by dongfeng Alternatively, I have fixed dead power supplies by creatively transferring the components from an AT power supply into the PC/XT casing. It works rather well, and once the PSU is back together you can't notice the difference! I also had a "clone" XT PSU that had the 110/240...
user's latest post:
Will Windows 3.11 run on a 286...
Published (2009-11-27 19:45:00)
Quote: Originally Posted by barney I was just wondering if Windows 3.11 will run on a 286? If yes, does it run fairly smoothly? Thanks. Barney Windows 3.11 will run on a 286. It works about as well as standard mode Windows 3.11 on a similar clock speed 386 with equivalent RAM. An early AT upgraded to 1.5 MB of RAM will provide a less than satisifying experience. However, with enough extended memory, and a plan to run nothing but Windows...
user's latest post:
XT IDE Ordering interest? (Was:...
Published (2009-11-29 10:07:00)
Quote: Originally Posted by digger Hi guys, I only check the forum about every 1.5 to 2 weeks or so, so I'm not sure is someone else already proposed something like this, but: What if someone (say for instance Yours Truly™) went looking for a fab on this side of the Pond, had that fab produce the boards as well, send them the design, order a batch, and and resell those boards to those of us in Europe? That would take some of...
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Latest active threads on PCs and Clones::
Started 2 days, 23 hours ago (2009-11-29 10:02:00)
by CIPSTER
Hello,
it's Seagate ST-225 with different stickers on it. These HDDs were probably manufactured especially for IBM. Look here: http://retroinformatica.wordpress.co... ibm-pc-xt-2 86/
R.
Started 1 week, 1 day ago (2009-11-23 11:45:00)
by kishy
Quote:
Originally Posted by lutiana
Please respond so we can get an idea of how many cards we will need to come up with when we are ready to offer the final product.
No dates have been finalized, but answer this question as if it were to be released by Christmas.
What kind of price is involved? I imagine ...
Started 2 days, 21 hours ago (2009-11-29 11:28:00)
by Chuck(G)
The easiest approach would be to find someone with a 5.25" drive-equipped PC to do the transfer for you.
Started 4 days, 9 hours ago (2009-11-27 23:31:00)
by NathanAllan
That actually is pretty interesting. I can see several different uses for something like that. Makes me want to get one jsut to run older SCSI things, and maybe even older controller cards for other things.
Thanks for the tip, now I know these things exist.
Started 3 days, 15 hours ago (2009-11-28 17:22:00)
by Chuck(G)
As far as I know, most 5150 controllers can't handle ST506 (unbuffered seek) 4MB drives. They're geared toward the ST412 (buffered seek) drives.
I know that people call it "ST506 interface", but that's not accurate. PC MFM/RLL drives are ST412 interface.
That being said, you usually can modify the controller's BIOS EPROM to provide very long seek pulses. I did that with a ...
Started 3 weeks, 2 days ago (2009-11-08 13:36:00)
by kishy
Quote:
Originally Posted by Chromedome45
I got one of these off of Epay and was wondering what the 5 MHz 8 MHz
jumper do? I am guessing they set the clock for the 286. Just don't want
to set to 8 MHz and possibly dmamage the 8088. Also does any one
have a manual scan they could upload for this? Any and all help would
be ...
Started 4 days, 13 hours ago (2009-11-27 19:42:00)
by Anonymous Coward
I believe windows for workgroups 3.1 will run on a 286, but I am pretty sure standard mode was removed in the 3.11 version.
Started 5 days, 23 hours ago (2009-11-26 09:41:00)
by Jorg
Quote:
Originally Posted by dongfeng
Don't forget to park the hard drive heads before shipping or moving it! Otherwise the HDD will likely be dead on arrival. The parking software is on the original IBM Guide To Operations setup disk.
I hope you don't speak out of experience..
Started 6 days, 5 hours ago (2009-11-26 03:22:00)
by fjk61011
Quote:
Originally Posted by per
A step-down transformer should work. You may want one of the older, heavy-duty ones, that simply contains a big induction-coil (as they got the best wave-forms). The frequency shouldn't matter unless the device uses it as timing (No PC, XT, AT, or any other recent computer does this. In fact, there is ...
Started 2 weeks, 4 days ago (2009-11-13 15:58:00)
by Fallo
Quote:
Originally Posted by kishy
What is this knob for? Is this a primitive method of over/underclocking the bus speed? My thought is perhaps it clocks the bus speed down to allow proper card operation if you want to use a faster CPU (or something like that).
It's a trimmer cap connected to the 14 Mhz clock ...
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Hot threads for last week on PCs and Clones::
Started 1 week, 1 day ago (2009-11-23 11:45:00)
by kishy
Quote:
Originally Posted by lutiana
Please respond so we can get an idea of how many cards we will need to come up with when we are ready to offer the final product.
No dates have been finalized, but answer this question as if it were to be released by Christmas.
What kind of price is involved? I imagine ...
Started 4 days, 9 hours ago (2009-11-27 23:31:00)
by NathanAllan
That actually is pretty interesting. I can see several different uses for something like that. Makes me want to get one jsut to run older SCSI things, and maybe even older controller cards for other things.
Thanks for the tip, now I know these things exist.
Started 6 days, 5 hours ago (2009-11-26 03:22:00)
by fjk61011
Quote:
Originally Posted by per
A step-down transformer should work. You may want one of the older, heavy-duty ones, that simply contains a big induction-coil (as they got the best wave-forms). The frequency shouldn't matter unless the device uses it as timing (No PC, XT, AT, or any other recent computer does this. In fact, there is ...
Started 5 days, 23 hours ago (2009-11-26 09:41:00)
by Jorg
Quote:
Originally Posted by dongfeng
Don't forget to park the hard drive heads before shipping or moving it! Otherwise the HDD will likely be dead on arrival. The parking software is on the original IBM Guide To Operations setup disk.
I hope you don't speak out of experience..
Started 3 days, 15 hours ago (2009-11-28 17:22:00)
by Chuck(G)
As far as I know, most 5150 controllers can't handle ST506 (unbuffered seek) 4MB drives. They're geared toward the ST412 (buffered seek) drives.
I know that people call it "ST506 interface", but that's not accurate. PC MFM/RLL drives are ST412 interface.
That being said, you usually can modify the controller's BIOS EPROM to provide very long seek pulses. I did that with a ...
Started 4 days, 13 hours ago (2009-11-27 19:42:00)
by Anonymous Coward
I believe windows for workgroups 3.1 will run on a 286, but I am pretty sure standard mode was removed in the 3.11 version.
Started 1 week, 2 days ago (2009-11-23 08:57:00)
by billdeg
If I were to guess ('cause I don't feel like opening my mod 25), that's the std. 8086 chip that came with the model 25, it's not a souped up model. It is possible that with an improved 8086 the ROMs are accessed at the full 8086 speed, and the some of the RAM--Processor swapping is full speed (everything but video), giving the system an effective clock speed that is closer to 6mhz.
Bill
Started 1 week, 3 days ago (2009-11-21 19:08:00)
by lutiana
What is a Microsoft InPort?
Started 2 days, 23 hours ago (2009-11-29 10:02:00)
by CIPSTER
Hello,
it's Seagate ST-225 with different stickers on it. These HDDs were probably manufactured especially for IBM. Look here: http://retroinformatica.wordpress.co... ibm-pc-xt-2 86/
R.
Started 2 weeks, 4 days ago (2009-11-13 15:58:00)
by Fallo
Quote:
Originally Posted by kishy
What is this knob for? Is this a primitive method of over/underclocking the bus speed? My thought is perhaps it clocks the bus speed down to allow proper card operation if you want to use a faster CPU (or something like that).
It's a trimmer cap connected to the 14 Mhz clock ...
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