On 20 Mar 98 at 23:34, Allison J Parent wrote:
I was just aquired two PS/2 model 50s. Normally I
don't collect older
PC system but they are interesting.
From opening them they are MCA bus with 286, 1mb
ram, 20mb? HD and 1.44
floppy. They are complete with reference disk(utilities?).
I didn't get
a keyboard, mouse or monitor with them but they look like typical VGA and
IBM miniplug nominal stuff. They are said to be working and look pretty
clean.
Questions, how fast were the 286s?
The hard disk is rather strange with what looks like a 50pin edge
connector. Obviously some of the extra connections over normal are
power. is the drive MFM, IDE or what?
What other oddities about these?
Allison
From Peter Wendt the PS/2 guru :
[" These "Integrated Harddisks" you most likely meant were used in Mod.
50,
55, 70 and P70. These are ESDI-drives with a combined electronic board
underneath, which is in fact a full MCA-adapter. The device has a Card-ID DF9F.
In IBM-technoslovakian this thing is called "DBA Harddrive", where DBA stands
for "Direct Bus Attachment". Size are 30,40,60,80,120 and 160MB. A 200MB was
available from Conner for some time but not as original part or OEM from IBM.
Very friendly greetings from Peter in Germany
http://members.aol.com/phwimage1/mcaindex.htm
"Master Of Desaster" - PS/2 expert since 1987 (Sigh !) " ]
You could also check out the PS/2 FAQ at ComputerCraft. I don't have their
URL handy . If you have any problem finding it , I'll dig it up.
ciao larry
lwalkerN0spaM(a)interlog.com