12 Oct
2015
12 Oct
'15
3:15 a.m.
Ok, correction to previous message. It's a Xebec 1410A with 1.0 Firmware.
Should be MUCH easier to find now that we have the correct model number!
Was curious if anyone here has - or knows someone who does - a Xebec 1402A
Seagate HDD controller. The drive is in an IBM 5150.
Note that this MUST be
the 1402A, NOT the more common 1402. There is some important historical
data we are trying to recover, but the controller is nonfunctioning.
Thank you for any help!
--
Devin Monnens
www.deserthat.com
The sleep of Reason produces monsters.
12 Oct
12 Oct
5:09 a.m.
On Mon, 12 Oct 2015, Devin Monnens wrote:
Ok, correction to previous message. It's a Xebec
1410A with 1.0
Firmware. Should be MUCH easier to find now that we have the correct
model number!
This was in an IBM 5150 (original PC)? I'm still confused. The 1410A is
a bridge board that presents an MFM drive as a SASI (pre-SCSI) device.
What SCSI bus adapter is that machine fitted with?
In any event, that disk should be readable using David Gesswein's MFM
emulator.
--
13 Oct
13 Oct
4:03 p.m.
On 10/12/2015 07:09 AM, Steven Hirsch wrote:
On Mon, 12 Oct 2015, Devin Monnens wrote:
Indeed, that and the 5150's PSU wasn't capable of running a hard drive.
Could have been upgraded, of course, but it just made me wonder if this
isn't some other IBM product with a similar model number, and not a 5150 at
all.
Unfortunately while I'm 99% sure that I have at least one of the boards,
they're over in England with no possibility of shipping them over to me in
the US in the near future :/
cheers
Jules
Ok, correction to previous message. It's a
Xebec 1410A with 1.0 Firmware.
Should be MUCH easier to find now that we have the correct model number!
This was in an IBM 5150 (original PC)? I'm still confused. The 1410A is a
bridge board that presents an MFM drive as a SASI (pre-SCSI) device. What
SCSI bus adapter is that machine fitted with? 
4:57 p.m.
> This was in an IBM 5150 (original PC)? I'm
still confused. The 1410A is a
> bridge board that presents an MFM drive as a SASI (pre-SCSI) device. What
> SCSI bus adapter is that machine fitted with?
On Tue, 13 Oct 2015, Jules
Richardson wrote:
Indeed, that and the 5150's PSU wasn't capable
of running a hard drive. Could
have been upgraded, of course, but it just made me wonder if this isn't some
other IBM product with a similar model number, and not a 5150 at all.
The XT (5160), NOT THE PC (5150) had a hard drive. It also had a larger
power supply than the PC. The XT hard disk was controlled by a board made
by Xebec, and rebranded as IBM. I don't remember the board model
number. As part of the rebranding, they removed the configuration
switches, so that it was "hard-wired" for 10M drive.
It supported two drives.
By soldering in jumpers (a 4 pole DIP switch fit just fine), you could set
either of the two drives for 5M?, 10M (default NC), 16M? or 26M?. Other
sizes or geometries could, of course be set by software after booting.
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cisin＠xenosoft.com -
dmonnens＠gmail.com -
jules.richardson99＠gmail.com -
snhirsch＠gmail.com