Difference between revisions of "HP250"

From Hackbox
(Condition)
Line 9: Line 9:
 
* Generally works, boots, can print and access HD
 
* Generally works, boots, can print and access HD
 
* Monitor has mold spots under the front glass.  This looks ugly and makes text hard to read.
 
* Monitor has mold spots under the front glass.  This looks ugly and makes text hard to read.
* Currently no way to exchange programs/data with outside world.
+
* Can exchange programs/data with outside world through use of a PC with HPIB card and HPDrive software
  
 
== To Do ==
 
== To Do ==

Revision as of 22:39, 7 July 2010

HP 250 model 45252A (option 004,012)

  • 256K RAM
  • Internal 8" drive
  • External 9133 (3,5" floppy + 15MB hard disk)
  • 2631B Line printer

Condition

  • Generally works, boots, can print and access HD
  • Monitor has mold spots under the front glass. This looks ugly and makes text hard to read.
  • Can exchange programs/data with outside world through use of a PC with HPIB card and HPDrive software

To Do

  • Fix the mold spots. This is a known problem and has been discussed on the cctech mailing list. E.g. here and here.

Notes

  • The 3,5" floppy cannot be used. The media test program included on the B.7.00 system disk shows an X2,3,0 device, but says it is unsupported. Also the hpmuseum.net claims a 250 cannot use 3,5" disks.
  • The ROM can only boot from 8" flex disc (see page 351/11 of the HP 250 Service Handbook found on HP Museum). Setting the thumbwheel switch on the processor board to 8. => it ran a memory test. So it must have the old ROMs for which there is no setting to boot anything else than the 9895 8" floppy or a 7910 hard disc.

HPDrive

I used HP Drive to exchange software between the 250 and the outside world.

For this I used a pentium 1 PC with Windows 98 and an ISA GP-IB card (NI AT-GPIB/TNT).

Also HPDir allows to access the files from the image or a real HP mass storage device. However I had some trouble using it, it seems to be not entirely compatible.