dupuy@cs.columbia.edu (12/11/90)
|The problem with "reset" crashing the system turns out to be an EEPROM |configuration problem. There's a location which identifies what type of |frame buffer you have. I haved a cgsix (GX), and it was set to a be a |routine color monitor (as if you had said "eeprom console=color"). Then, |"reset" tries to talk to the board that is there, but it isn't. | | The byte to be configured is location 0x1f: | 00 - monochrome monitor | 10 - ttya | 11 - ttyb | 12 - color monitor and 3/60 plug-in color frame buffer | 20 - P4 Color frame buffer | | Get to the PROM monitor (for example, "shutdown -hf now"). At the ">" | prompt, change the value with the "q" command: >q 01f Your current value | will be displayed. Enter "20", then a "." to end the patches. Reboot, | and "reset" will be working correctly. I'm curious what kind of system you did this on - I have one 3/60 with a GX framebuffer, and although it's never run 4.1, I've had no problems with "reset" - is this the Unix command, or the sun4c forth monitor command? Anyhow, it's a ways to the console of this machine, and I'm very lazy (plus somebody was probably using it, so I didn't want to shut it down to the monitor level. Instead, I just used adb, as follows (adb doesn't seem to be able to write a single byte for some reason): # adb -w /dev/null /dev/eeprom not core file = /dev/eeprom 0x1f/x 0x1f: 1212 # if you have a custom banner 0x1f/w0x2012 0x1f: 0x1212 = 0x2012 ^D # adb -w /dev/null /dev/eeprom not core file = /dev/eeprom 0x1f/x 0x1f: 1200 # if you don't 0x1f/w0x2000 0x1f: 0x1200 = 0x2000 ^D # eeprom -c # to fix up the checksum eeprom: diagnostic area checksum wrong # eeprom hwupdate=Tue Dec 19 15:16:54 1989 memsize=20 memtest=20 scrsize=1152x900 watchdog_reboot=true default_boot=true bootdev=le(0,0,0) kbdtype=0 keyclick=false console=b&w custom_logo=true banner=Columbia University Computer Science Dept. Sun-3/60C diagdev=le(0,0,0) diagpath= ttya_no_rtsdtr=false ttyb_no_rtsdtr=false ttya_use_baud=false ttyb_use_baud=false ttya_baud=0 ttyb_baud=0 columns=0 rows=0 Well, eeprom seems confused, but it's still running 4.0.3, so who knows. I guess that's why we have to use the prom monitor (or adb). While I'm on the subject, what ever happened to the wonderful PROM User's Manual (Sun Part Number 800-1736-10) which came with the 4.0 docuboxes, but wasn't part of the spiffy 4.1 set? If you have a copy, it has great tables describing everything from the Sun-2 to 386i (no Sun-4C [Campus], alas). In the past, I found out that the equally wonderful Floating-Point Programmer's Guide had become the Numerical Computation Guide, and was bundled with the unbundled Fortran compiler. Has the PROM Manual been bundled with a new and unbundled assembler? :-) inet: dupuy@cs.columbia.edu uucp: ...!rutgers!cs.columbia.edu!dupuy