gerwin wrote:

From Intel 244452 P3E DataSheet.pdf: […]
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From Intel 244452 P3E DataSheet.pdf:

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1Table 5. Frequency Select Truth Table for BSEL[1:0]
2BSEL1 BSEL0 Frequency
30     0     66 MHz
40     1     100 MHz
51     0     Reserved
61     1     133 MHz
7...
8BSEL0 = Finger/Pin B21
9BSEL1 = Finger/Pin A14
10...
11This signal can either be left as a no connect or tied to ground.
12It should be pulled up to 3.3 V with a 220 Ω resistor.

Since I only changed A14 it should be 100MHz with my mod.

It worked great. I soldered an ATA-66 strand of cable between R19 and R18 (pretty dodgy, first time soldering, no flux, lead free solder using a cheap £10 Aldi soldering iron).

I left the R19 resistor in place (so I can later reverse modification ) and it still works.
Compaq Bios shows P3-500E at 66fsbx7.5 but in Win 98 CPU-Z it shows 750mhz 7.5x100.
I have a few 440BX Compaq and HP motherboards that don't boot with any 133FSB coppermine so this is a very useful mod.

gerwin wrote:

You can mod BSEL on the motheroard as well, but you are on your own then.
The cleanest way is to use a Slotket adapter with a Socket 370 CPU, then use the slotket jumpers to override BSEL.

I asked about motherboard mods because an old slot1 i810 board I have (MS-6183) also doesn't support or boot with any 133FSB P3. It has an undocumented jumper though, JP5, when shorted it forces a cpu to 100 and will then work. I was trying to figure out what it changed to make it work.
Anyway, thanks for the info.

Looks good! Glad it works for you.

BSEL signals go from the CPU to one or more components on the motherboard. Maybe the North Bridge or the PLL chip, it may be different on some motherboards. Of course you can still intercept the BSEL signals on the motherboard somewhere, but it requires investigating the BSEL routing.
On the Slot 1 CPU cards the BSEL connection is always in the same spot.

whats the difference between the AN430TX and LT430TX, they look really similar. any differences?

AN430TX has Yamaha OPL-3 audio codec and Yamaha OPL-4 ML wavetable on board, LT430TX has this as option.
Video subsystem is optional for both models, but AN430TX have optional also an Brooktree video capture processor.

Other than that, they are the same boards.

I just hit the old Intel motherboards BIOS/docs jackpot:
ftp://ftp.ioncomputer.com/HardWare/SYSTEMS/1990s
BIOS images and documentation for things as old as Intel Model 302 or Professional Workstation. Intel Xpress and Xtended Xpress motherboards stuff. Mirrored it, I recommend it to everyone else.

Wow! Perfect!

I need to check some old links. There are more pages out there. And I think I am missing the OEM-only boards here.

I once started a page on Intel, hasn't been updated for quite a while.
https://www.elhvb.com/mboards/intel/index.html

On the long list of things to do...

GL1zdA wrote on 2020-05-06, 19:29:

I just hit the old Intel motherboards BIOS/docs jackpot:
ftp://ftp.ioncomputer.com/HardWare/SYSTEMS/1990s
BIOS images and documentation for things as old as Intel Model 302 or Professional Workstation. Intel Xpress and Xtended Xpress motherboards stuff. Mirrored it, I recommend it to everyone else.

Having known of this site since last year, I wonder if the site admins have finally cottoned on to all us strange new users, as all this information seems to have been recently removed from their ftp. Hope someone saved the contents locally or to archive.org. As a matter of interest did someone happen to copy the following file (relates to a couple of boards I'm currently researching)

ftp://ftp.ioncomputer.com/HardWare/SYSTEMS/19 … eets/Mu_sys.pdf

PC Hoarder Patrol wrote on 2020-05-13, 03:04:

GL1zdA wrote on 2020-05-06, 19:29:

I just hit the old Intel motherboards BIOS/docs jackpot:
ftp://ftp.ioncomputer.com/HardWare/SYSTEMS/1990s
BIOS images and documentation for things as old as Intel Model 302 or Professional Workstation. Intel Xpress and Xtended Xpress motherboards stuff. Mirrored it, I recommend it to everyone else.

Having known of this site since last year, I wonder if the site admins have finally cottoned on to all us strange new users, as all this information seems to have been recently removed from their ftp. Hope someone saved the contents locally or to archive.org. As a matter of interest did someone happen to copy the following file (relates to a couple of boards I'm currently researching)

ftp://ftp.ioncomputer.com/HardWare/SYSTEMS/19 … eets/Mu_sys.pdf

I yanked that 1990s section way back in September 2019... 😅 I must've lucked out that time. The archive is on some laptop drive in storage though.

http://cwcyrix.duckdns.org/intel-legacy-files … Docs/Mu_sys.pdf

Thanks @AmiSapphire, glad the files got saved 😀

evasive wrote on 2020-05-07, 20:44:

...I once started a page on Intel, hasn't been updated for quite a while.
https://www.elhvb.com/mboards/intel/index.html
...

Where did you find those .hlp files? From what I understand they were available on the Intel bbs at some time, just looking for a few more.

AmiSapphire wrote on 2020-05-13, 04:58:

I yanked that 1990s section way back in September 2019... 😅 I must've lucked out that time. The archive is on some laptop drive in storage though.

http://cwcyrix.duckdns.org/intel-legacy-files … Docs/Mu_sys.pdf

Is it possible to put the archive up? i can host it if you want. I browsed it just the other day, was about to archive, 2 days later it disappeared. i'm trying to document the early Model 301 to Xpress era. i have converted some of the Intel .hlp files, see here:
http://66.113.161.23/~mR_Slug/deviceInfo/Intel/

Also a (public domain) picture of the Model 401:
http://66.113.161.23/~mR_Slug/deviceInfo/Inte … 1/Model-401.jpg
(I can't seam to link inline images, something about https)
BTW does anyone have a memory card for this, its the same as the 302 (386AT-25) and 303. They should be labeled iSBC ATMEM04, iSBC ATMEM08 or iSBC ATMEM16.

I've uploaded it to archive.org, seems to be the safest host for such things:
https://archive.org/details/old_intel_motherboards_resources
I hope I've described it well enough for people to find it via google.

I was going to recommend people download the Windows Help reader for modern systems (KB917607) but apparently it's not available for Windows 10. It is available for Windows 7 and Windows 8.1. Can the version for Windows 8.1 run under 10? (I am still on 8.1)

https://www.microsoft.com/en-us/download/deta … s.aspx?id=47671

Eta: this update is available for Windows Vista/Server 2008, Windows 7/Server 2008 R2 and Windows 8.1. It is NOT available for Windows Server 2012 or Windows 10.

GL1zdA wrote on 2020-05-13, 12:12:

I've uploaded it to archive.org, seems to be the safest host for such things:
https://archive.org/details/old_intel_motherboards_resources
I hope I've described it well enough for people to find it via google.

At least someone else archived it, though some files seem to be missing, notably adv_mn.doc, mg15_ds.doc, xx_mg15.doc (datasheets), and two old Xpress BIOS files.

Edit: http://cwcyrix.duckdns.org/ftp.ioncomputer.com.tar.xz - as I cannot be arsed to upload it to archive.org, admittedly. That includes the missing five files above.
Edit 2: https://archive.org/details/ftp.ioncomputer.c … 90s-intel-files - Uploaded, finally... Of course, that includes the five missing files.

Errius wrote on 2020-05-13, 15:06:

I was going to recommend people download the Windows Help reader for modern systems (KB917607) but apparently it's not available for Windows 10. It is available for Windows 7 and Windows 8.1. Can the version for Windows 8.1 run under 10?

https://www.microsoft.com/en-us/download/deta … s.aspx?id=47671

I knew of a third-party patch that allowed you to view .hlp files in Windows 10, but not sure if it still works in newer versions of Windows 10, however (probably still does).

Errius wrote on 2020-05-13, 15:06:

I was going to recommend people download the Windows Help reader for modern systems (KB917607) but apparently it's not available for Windows 10. It is available for Windows 7 and Windows 8.1. Can the version for Windows 8.1 run under 10? (I am still on 8.1)

https://www.microsoft.com/en-us/download/deta … s.aspx?id=47671

Eta: this update is available for all versions of Windows 7/Server 2008 R2 and all versions of Windows 8.1. It is NOT available for Windows Server 2012 or Windows 10.

I simply copied winhlp32.exe from a Windows 2000 installation. It works well with these *.hlp files.

GL1zdA wrote on 2020-05-13, 12:12:

I've uploaded it to archive.org, seems to be the safest host for such things:
https://archive.org/details/old_intel_motherboards_resources
I hope I've described it well enough for people to find it via google.

Thank you, Thank you, Thank you, Thank you. I was so annoyed I missed the server by a few days.

There's 218MB sitting here too. I'll put it up on elhvb.com at some time.

evasive wrote on 2020-05-13, 18:45:

There's 218MB sitting here too. I'll put it up on elhvb.com at some time.

Ah, are you responsible for elhvb.com? That's come up in my Google searches before.

Stiletto wrote on 2020-05-15, 06:43:

evasive wrote on 2020-05-13, 18:45:

There's 218MB sitting here too. I'll put it up on elhvb.com at some time.

Ah, are you responsible for elhvb.com? That's come up in my Google searches before.

There's 100.000+ files in there , mostly manuals and bioses (and I need to upload some because it seems some more FTP-servers went offline recently).

EDIT: added the ioncomputer FTP files
https://www.elhvb.com/mboards/intel/index.html

EDIT 2: added whatever old Intel manuals I had on file + the OEM-only board manuals. I haven't seen those online for a while so time to upload them I guess.

retro games 100 wrote on 2009-06-28, 18:21:

Has anyone seem this webpage before?

http://home.att.ne.jp/alpha/pcboard/486q.htm

It shows a whole bunch of 486 boards. They're not all Intel, so this thread is slightly off-topic, but nevertheless I think it's interesting.

Better starting point:
http://home.att.ne.jp/alpha/pcboard/frame.htm