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aaron7
November 4th, 2008, 06:30 AM
I have a wd10025-wx2a MFM controller in my IBM 5155 with a ST-225 currently working fine. I'd like to install a ST-251, but the controller doesn't seem to see it.

There is a jumper block on the card with no jumpers installed currently.

Does this card support the ST-251? If not, does anyone have a controller card that does for sale?

Thanks!

MikeS
November 4th, 2008, 10:33 AM
Depends on the BIOS, I believe. Rev G does not support a 251, Rev H does.

You should be able to find the manual on the 'net; it's a WD1002S-WX2A, by the way(not 5).

aaron7
November 4th, 2008, 10:45 AM
Ok great, thanks for the correction.

Found this: http://stason.org/TULARC/pc/hard-disk-floppy-controllers/U-Z/WESTERN-DIGITAL-CORPORATION-Two-MFM-ST506-412-driv-223.html

My card is a revision... well, I don't know. The white sticker says REVISION X7, but someone crossed out X7 and wrote 11 over it...

MikeS
November 4th, 2008, 11:45 AM
You might find more info here (click on the Setup instructions):

http://theref.mfarris.com/controllers/c_wd1002s-wx2a.html

m

mwlay
March 20th, 2013, 02:22 PM
Hi all,
I have problems with the controller-WD1002s wx2. WD1002s the works with a ST225 but not with a Tandon TM503. The Bios version 62-000042-13 does not support this HD. I need the Super BIOS. Who can make me this BIOS available? A *. BIN or *. Hex file is sufficient.

modem7
March 20th, 2013, 10:56 PM
I have problems with the controller-WD1002s wx2. WD1002s the works with a ST225 but not with a Tandon TM503. The Bios version 62-000042-13 does not support this HD. I need the Super BIOS. Who can make me this BIOS available? A *. BIN or *. Hex file is sufficient.
Welcome to these forums.

Tandon TM503: 306 cylinders, 6 heads, 17 SPT

According to page 7-2 of the WD1002S-WX2 OEM manual located [here (http://www.minuszerodegrees.net/manuals/WD1002S-WX2%20-%20OEM%20Manual.pdf)], the BIOS of 62-000042-01 (ROM) or 62-000042-11 (EPROM) should support that.
An image of the 62-000042-11 EPROM is located [here (http://www.minuszerodegrees.net/rom/rom.htm)].

mwlay
March 28th, 2013, 10:35 AM
modem7 hello, thanks for the answer
I tried it with the version the 011. The TM503 HD is not so well. It shows the same error as with the 013 version. Probably the ST419 is organized differently than the TM503. Where are the Superbios to WD1002S-WX2? Both Bios 011 and Bios 013 with a boot floppy with no longer possible. I can therefore also the Debugger does not start (Debug g = c800 5).

modem7
March 28th, 2013, 01:45 PM
Probably the ST419 is organized differently than the TM503.
Tandon TM503: 306 cylinders, 6 heads, 17 SPT, Step Pulse=5-500 (source (http://bitsavers.trailing-edge.com/pdf/tandon/Tandon_TM50x_Disk_Drives_-_OEM_Operating_and_Service_Manual_-_Feb_1983.pdf))
Seagate ST419: 306 cylinders, 6 heads, 17 SPT, Step Pulse=5-500 (source (ftp://ftp.seagate.com/pub/techsuppt/mfm/st419.txt))

So, ST419 setting in the -11 BIOS should work.


Where are the Superbios to WD1002S-WX2?
I see no evidence that the Superbios was created for the WD1002S-WX2.


Both Bios 011 and Bios 013 with a boot floppy with no longer possible.
I can therefore also the Debugger does not start (Debug g = c800 5).
I think you are saying that you are not able to boot from a floppy disk.
Maybe you are not waiting long enough. Sometimes, one has to wait a minute or more before an error message is displayed (and then boot from floppy happens).

You need to be able to boot from a floppy in order to run DEBUG so that you can low-level format the TM503.
A:>
A:>DEBUG
-G=C800:5

After low-level format, FDISK then FORMAT would be used (example (http://www.minuszerodegrees.net/hdd/hdd_fdisk_format_dos33.htm)).