TTY Issue with Sunblade 150 Post: 302397177

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Operating Systems Solaris TTY Issue with Sunblade 150 Post 302397177 by Geekasaurus on Sunday 21st of February 2010 07:38:31 AM

02-21-2010

Registered User

TTY Issue with Sunblade 150

I purchased a Sunblade 150 from Ebay. It had 512MB RAM and 80GB hard disk. I recently purchased additional RAM and another 80GB disk, and installed them. The RAM goes through POST without issues. I just can't get beyond the OK prompt. I am using the serial console.

I have been unable to make the on-board graphics work, and do not have a SUN mouse and keyboard. I am content with the serial console. Using the serial console, I can see the machine going through all its various tests...prior to shutting it down, I went to OBP and set the diagnostics flag to true. Everything appears copasetic

Except that I cannot send any data to the serial console. I dug out my RS-232 tester, and it does appear to have a problem. The CD (Carrier Detect), DSR (Data Set Ready), RTS (Ready to Send), DTR (Data Terminal Ready), CTS (Clear to Send), and RD (Receive Detect) lights are lit as normal, however, the TD (Transmit Detect) is not lit.

To check the cable, I connected it to my RS6000/B50 server. All 7 lights come on as expected and everything works. The problem therefore is not my cable, nor is it the XP system that I am using PuTTY to make the connection with. This cable did work prior to the installation of RAM and hard disk. I was able to install Solaris 10 via the serial console without event.

I had to purchase new IDE cables for the upgrade--the ones that came with it were far too short.

This makes no sense to me at all. Should I remove the RAM? I did try it with the 2nd Hard Disk disconnected, but the problem returned.

Why is the Sunblade not asserting TD? Everything else seems just fine.

I read elsewhere that I cannot use a standard mouse and keyboard with this thing. Further, the on-board video is deader than Elvis--at least there is a rumor that Elvis lives. Could these issues be related?

Geekasaurus

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dc

dc(4) Kernel Interfaces Manual dc(4)

Name
dc - serial line/mouse/keyboard

Syntax
device dc0 at ibus? vector dcintr

Description
The serial line controller provides four ports, with modem control on two of the ports. The DECstation 3100 and DECstation 2100 only pro-
vide partial modem control. The DECstation 5000 provides full modem control. The ports are used as follows:

Port Usage
0 Graphics device keyboard at 4800 BPS
1 Mouse or tablet at 4800 BPS
2 Communications port 1 (w/modem control)/local terminal
3 Communications port 2 (w/modem control)/local terminal

Each communication port from the serial line controller behaves as described in and can be set to run at any of 16 speeds. For the encod-
ing, see

When a graphics device is not being used as the system console, communications port 2 becomes the system console. In this configuration,
the port can only be used at 9600 BPS and no modem control is supported.

The serial line driver operates in interrupt-per-character mode (all pending characters are flushed from the silo on each interrupt).

Restrictions
Speed must be set to 9600 BPS on the console port and 4800 BPS on ports used by graphics devices. The serial line driver enforces this
restriction; that is, changing speeds with the command may not always work on these ports.

Files
console terminal

local terminal

See Also
console(4), devio(4), tty(4), ttys(5), MAKEDEV(8)

RISC dc(4)