bill@platypus.uofs.edu (Bill Gunshannon) (02/26/91)
Has anyone tried removing the OBM and converting /dev/ph1 to a real TTY?
Is there anyone on the net who can provide a schematic of the motherboard
for the 3b1? I would like to do some modifying, but can't possibly afford
the whole set of tech manuals even if I could find them.
bill
--
Bill Gunshannon | If this statement wasn't here,
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bill@tuatara.uofs.edu | #include <std.disclaimer.h> botton@i88.isc.com (Brian D. Botton) (03/01/91)
In article <295@platypus.uofs.edu> bill@platypus.uofs.edu (Bill Gunshannon) writes: >Has anyone tried removing the OBM and converting /dev/ph1 to a real TTY? >Is there anyone on the net who can provide a schematic of the motherboard >for the 3b1? I would like to do some modifying, but can't possibly afford >the whole set of tech manuals even if I could find them. > Sorry to deflate your balloon, but even if you could modify the hardware, the kernel wouldn't let you do what you want. You would get some tty function- allity, but you wouldn't be happy with it. -- ... ___ *** _][_n_n___i_i ________ ******* Brian D. Botton (____________I_I______I_I_______I laidbak!botton or /ooOOOO OOOOoo oo oooo oo oo laidbak!bilbo!brian
jbm@uncle.uucp (John B. Milton) (03/02/91)
In article <295@platypus.uofs.edu> bill@platypus.uofs.edu (Bill Gunshannon) writes: >Has anyone tried removing the OBM and converting /dev/ph1 to a real TTY? >Is there anyone on the net who can provide a schematic of the motherboard >for the 3b1? I would like to do some modifying, but can't possibly afford >the whole set of tech manuals even if I could find them. John Lydic has this one completely worked out, and it does work. With his idea you will have to set the baud rate with a dip switch, but hey! I'd do that to get another serial port. John has just received an EIA card and he recently got a TB, so he will soon become more net-connected. BTW, John Lydic has done a lot on something called the "Mondo Combo" card, which has already been designed from a schematic point of view, but has not yet been layed out as a board. It will have SCSI, 4M of RAM (2 expansion and 2 RAM disk), 8 serial ports and a few other goodies. He is planning to see bare boards and PALs. The board is designed so that, for the most part one can populate only the common bus interface and the part you're interested in. John selected a Western Digital SCSI chip which he has written OS/9 drivers for. John -- John Bly Milton IV, jbm@uncle.UUCP, n8emr!uncle!jbm@osu-cis.cis.ohio-state.edu (614) h:252-8544, w:785-1110; N8KSN, AMPR: 44.70.0.52; Don't FLAME, inform!
dlb5404@tamuts.tamu.edu (Daryl Biberdorf) (03/03/91)
In article <1991Mar2.072157.1220@uncle.uucp> jbm@uncle.uucp (John B. Milton) writes: >In article <295@platypus.uofs.edu> bill@platypus.uofs.edu (Bill Gunshannon) writes: >>Has anyone tried removing the OBM and converting /dev/ph1 to a real TTY? > >John Lydic has this one completely worked out, and it does work. With his idea >you will have to set the baud rate with a dip switch, but hey! I'd do that to >get another serial port. John has just received an EIA card and he recently >got a TB, so he will soon become more net-connected. Does John plan to make the plans for modifying the OBM port available? I'd be interested in performing this modification to my machine. > >BTW, John Lydic has done a lot on something called the "Mondo Combo" card, > ... Drool, drool. What is the projected release date for this thing? This would definitely prolong the life of the 3B1. What kind of price is John thinking of right now? $100, $5, ? :) --Daryl Biberdorf, dlb5404@{rigel,tamuts}.tamu.edu Texas A&M University