a121@mindlink.UUCP (Daniel Carreras) (10/27/89)
Try putting SetCPU close to the end of your startup-sequence. Some times the order in which things are excuted DO afect the overall performance and results (?) Daniel
miller@intvax.UUCP (Dave Miller) (10/27/89)
I just tried installing an A2620 with 2 Meg in my A2000 and cannot
get it to work properly. The following is my configuration:
A2000 with 3 Meg, 1 internal 3 1/2" floppy drive, XT Bridgeboard with
internal 5 1/4" floppy drive, A2090 hard disk controller with 20 Mbyte
disk, FlickeFixer, and 2 XT expansion boards (memory expansion for 640k
on Bridgeboard and FastBack 30 Mbyte hardcard which is partitioned as
20 Mbytes for Amiga side and 10 Mbytes for XT side).
The following is the first part of my startup-sequence file:
Addbuffers df0: 10
c:SetPatch >NIL:
SYS:System/FastMemFirst
c:SetCpu FASTROM VERBOSE
BindDrivers
assign >NIL: DH0: exists
IF NOT WARN
Mount FF0:
assign sys: FF0:WorkBench1.3
assign c: SYS:c
assign s: SYS:s
assign L: SYS:l
assign FONTS: SYS:fonts
assign DEVS: SYS:devs
assign LIBS: SYS:libs
assign T: SYS:t
execute s:Startup-Sequence
ELSE
execute s:Startup-Sequence.f
ENDIF
I first checked all the jumpers on the board before installing it, and
they should be set up correctly according to the manual. After installing
it and turning the power on, I held down the 2 mouse buttons and brought
up the display asking how I wanted to boot (68000, 68020, Unix). When I
select 68000 mode, everything works fine, so I didn't break anything
during installation. When I try booting from the A2620, the startup
sequence hangs on FastMemFirst (mouse pointer freezes and disk drive
freezes with light on). If I comment out FastMemFirst, then it bombs on
SetCpu (v1.5) - the screen turns completely blue and stays that way.
If I just use SetCpu VERBOSE rather than SetCpu FASTROM VERBOSE, SetCpu
will report that I have a 68020, 68881, and 68551, and the machine comes
up. However, it will freeze up or guru about 1 minute after I attempt
to do anything (WorkBench shows that I now have 5 Meg of memory, but no
matter what program I run, the machine crashes).
My questions: Am I missing something in my startup-sequence, or is it
in the wrong order, should I be using other parameters with
FastMemFirst and SetCpu, do I need AddMem, or do I just have a
bad board ?
Finally, I am also concerned about whether I am overtaxing the power
supply with all of the expansion boards I have. A couple of times
when I powered the system on, the FastBack hard card refused to djmount.
It is in the last XT slot as far away from the power supply as you can
get, and I was wondering if the addition of the A2620 is sapping too
much power so that the hard card doesn't always work. In any case,
this is a secondary concern, and I am really interested in getting
the A2620 working.
I would greatly appreciate any help anyone can give me !!!
David J. Miller
Sandia National Labs
Albuquerque, N.M.
(505)-844-9662
(505)-344-6343
miller@intvax!unmvax.cs.unm.edu