Xref: utzoo comp.sys.att:4284 unix-pc.general:1402 Path: utzoo!edhnic!becker!ziebmef!ncrcan!lsuc!attcan!uunet!cos!hqda-ai!icus!lenny From: lenny@icus.islp.ny.us (Lenny Tropiano) Newsgroups: comp.sys.att,unix-pc.general Subject: Re: Help needed restoring UNIX-PC Summary: Good luck, your going to need it! Keywords: unix pc parts pc7300 Message-ID: <489@icus.islp.ny.us> Date: 10 Sep 88 04:56:04 GMT References: <24769@bu-cs.BU.EDU> Reply-To: lenny@icus.islp.ny.us (Lenny Tropiano) Organization: ICUS Software Systems, Islip, New York Lines: 97 In article <24769@bu-cs.BU.EDU> budd@bu-cs.BU.EDU (Philip Budne) writes: [...] |> |>I would appreciate any advice on restoring it or using the parts to |>build something else (know of any good 68020/bitmap/HD boards?). What |>I would like is a multitasking PC which runs GNU Emacs and uucp. |> [...] |> |>Missing; |> Hard disk drive, floppy disk drive, |> Acceptible replacemements? Since you are talking about the PC7300, I presume you have the case that only can hold the half-height drives. In that case you would be constrained to something of that size. I've seen hard drives up to 76MB in 1/2 height using the MFM recording format. Seagate ST251 (40Mb) drive would be an acceptable replacement. Anything less than 40Mb is tight for a development environment. Any 5.25" 360K floppy drive would be acceptable, assuming the strap settings were set correctly. The drive inside the UNIX PC I believe is made by Teac. There has been some success with using a 3.5" 800K floppy on the UNIX PC which will give you extra floppy space. (Speak to Darren [darren@bacchus] for further details on this subject) |> Cables for disks. These usually come with the hard drive and/or floppy. |> All s/w and doc was discarded. |> This can be bought from any AT&T Dealer. |> Empty 40 pin sockets; |> 22H 22E 21H 17C 2K |> The chips that are missing are: (From the AT&T UNIX PC Reference Manual) 22H - DMA Data IC 22E - DMA Address IC 21H - WD1010 hard disk controller 17C - Video IC 2K - SCM Modem 882A |> Empty CPU socket (64 pin) |> 68010? What speed? |> Yes, 68010 (10Mhz) |> Additional memory board. |> 4164 dynamic RAMs in the PC7300, and 41256-15 (150ns) dynamic RAMs in the 3B1. |>Damaged; |> relay K5 (part no? DS1E-M??) |> This is something for phone line 2, possibly for the A-lead, I'm not sure. (Gil, you listening?) |>Q: Is 3b1 just another name for PC7300/UNIX-PC? |> The 3B1 has the same CPU except it had a bigger case (to satisfy the full height drives), and possible a different power supply. The PC7300 came with less on board memory, and I believe couldn't be expanded as high as 4MB (unlike the 3B1). |>Q: What does it mean when people say they are running OS version 3.51 |> is this S5R1? R2? R3? |> The 3.51 release is the release number for the AT&T UNIX PC operating system. It has *nothing* to do with System V release 3.XXX. The UNIX PC Operating system is somewhere around System V release 2 (SVR2), it has some Bezerkley enhancements (BSD), plus somethings that are not up to the SVR2 and are still lagging behind at SVR1. |>Q: Is purchasing the chips on qty 1 going to be prohibative? |> are any of them custom? |> Doubt it sincerely. It probably would be cheaper by an entire *new* machine. Most of the chips are custom, except of course for the 68010 CPU that you are missing. |>Q: Would the platform run 'X'? Or is the window system reasonable? It doesn't run X-windows, and I doubt it ever will. ;-) -Lenny -- Paper-net: Lenny Tropiano | @-net: lenny@icus.islp.ny.us ICUS Software Systems | !-net: ...sbcs \ PO Box 1 | boulder \ Islip Terrace, NY 11752 | talcott !icus!lenny Vocal-net: (516) 582-5525 [work] | pacbell / (516) 968-8576 [home] | hombre / Telex-net: 154232428 ICUS | Another-net: attmail!icus!lenny