28 Jul
1999
28 Jul
'99
3:44 p.m.
Hi John:
Thanks:
Switch bank:
S1-1 low ROM enable, OFF = disable lower 256 word 765000-765777
In my YD version that is some of the boot devices, some tests
S1-2 ON=POWER UP REBOOT ENABLE, OFF=no boot on power up
parallel to TP1; if OFF, only TP2 low (TP3=GND) will boot
S1-3 to S1-10 word address offset, boot address = 173000 + (S)<<1
normally OFF
Boot process:
perform some tests, infinite loop when fail
print some register contents (console)
prompt for command (console)
enter console emulator command (L adr, D data, E[xamine], S[tart]) or boot
device
code (PR paper tape, DK RK05, ... )
if boot device: further tests, then boot from device
My doc is up to YD version only; the difference is different supported
devices, I believe.
I'm home now: here's what I've found:
On power up, I start the machine at 773000. On the console I see:
100000 177400 000000 1577776
$
I can then use L to load the address register, E to examine, D to deposit,
etc. Cool!
I tried several incarnations to get the machine to boot off of my attached
RX01:
$DX
$DX0
$DX 0
$DY (just in case)
$DK and $PT (just to see what happens)
and in all cases the machine hangs. More exactly, after $DX or $DK it
re-issues the $ prompt, while DX0 or DY0 or DK0 or even PT0 hangs.
I either have the syntax wrong, or the machine can't find my drive. It's
at the standard address, all jumpers on the RX01 controller at factory
settings for standard values.
Do you have more info on the boot process? Device codes, or more info on
the diagnostic routines? This may be a syntax error on my part.
If I toggle in an RX01 bootstrap, I get further than this, an error
message from the OS boot record.
Thansk for the info,
Kevin
--
Kevin McQuiggin VE7ZD
mcquiggi(a)sfu.ca