[rescue] Sun 3/50 BTW (and Sun 2 keyboard)

uix at centrum.cz uix at centrum.cz
Tue Feb 27 01:37:56 CST 2018

On 02/26/2018 11:19 PM, Jon wrote:
> On 26 February 2018 at 22:26, Ian Finder <ian.finder at gmail.com> wrote:
>> Earl, et. al, a few questions-
>> 1) Can the 1600x1200 Sun B&W ECL monitor, which is what I appear to have,
>> work with the Sun 2/120
> Hello,
> It should work with at least one of the monochrome Sun 2/120 framebuffers.
> The Sun Hardware Reference ( http://www.sunhelp.org/faq/sunref3.html )
> says the 501-1003 only supports TTL but I don't believe this is true
> because I
> have that board and it can be jumpered for either TTL or ECL.
> Don't know about the 501-1052 board the reference claims supports both
> TTL and ECL. Maybe that's true or maybe they mixed up the two?
> 2) Does anyone know common causes for the monitor in (1) to dim?
>> 3) Does anyone have the pinouts for the mythical type 2 <-> type 3 keyboard
>> & mouse passive adapter? I would like to construct one.
> Since I'm in the same situation as you regarding a severe lack of type-2
> keyboard I'm planning on doing this as well.
> No pinout for the official adapter, but the pinout for the 501-1003 board
> can be
> found in the schematics in the engineering manual at:
> http://bitsavers.org/pdf/sun/sun2/800-1187-01_2-120_Video_Board_Engr_Sep84.pdf
> Page 19, connectors J1900 & J1901. Pinout for type-3 can be found at:
> http://www.hardwarebook.info/SUN_Keyboard/Mouse
>> 4) Does anyone have a spare VME framebuffer for a 3/260, and a spare sun 3
>> mouse?
>> 5) What's the best way to do a SunOS 3 install without employing the use of
>> a tape drive?
> If you have the SCSI board, I would try to hook up a SCSI drive to another
> Sun machine (probably a sun-3 with Sun UNIX 3.x because the filesystem
> might have changed) and get the miniroot etc onto the drive from there and
> then move the drive back try to boot and install.
> I don't have the SCSI board (it seems to be very rare indeed) but I do have
> a Xylogics 450(?) board to interface with an SMD drive.
> I suppose the above scheme would work with an SMD drive as well as long
> as you have another Sun machine with SMD support, which I don't.
> But I do have an ethernet board so I've been unsuccessfully trying to do a
> network install. Something goes wrong very early and I can't even get the
> diag to transfer beyond a few bytes.
> The problem could either be with the sun-2 ethernet board or, as I'm hoping,
> something wrong with the netbsd/modern network I'm trying to boot from.
> My current plan is to get a Sunos3 installation (need ND support to netboot
> sun 2/120, support removed in 4.x!) onto one of my sun-3 machines and
> maybe that will work better for netbooting since age difference is much
> less...
I wrote a simple ND server ( https://github.com/senjan/ndd ) which I'm 
using to boot my 3/50 (running SunOS 3.5) from my Solaris 11.3 box but 
it should work on Linux too. It's a bit hacky but it works pretty 
reliably for me, even swapping and dumping seem to work fine.


> Lastly (might as well take this chance to beg), I only have 1MB of RAM in
> my sun-2 which restricts me to running only Sun's 1.x releases (and with
> a shoehorn), if I ever get past the install issue.
> Guess no one happens to have some spare RAM board they're willing to
> let go to a good home? With compensation? ^_^
> - Jon
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