#Combo 68EC030 + FASTROM
6 messages in this thread
FASTROM vs NOFASTROM – no different?
I've just obtained extra memory for my GVP Combo accelerator card (68EC030
at 25 MHz with 1M + 4M of 32 bit RAM). I did this so that I could use
GVPCpuCtrl FASTROM to copy the ROM into 32-bit RAM and have an increase in
processing speed.
It didn't work. After very careful checking, neither "GVPCpuCtrl FASTROM"
nor "CPU FASTROM" have any effect on speed. They both cause ROM to be
copied to RAM, but they don't access the image in RAM. I've proved this
by completely overwriting the image with zeros without crashing the
machine. Also, ROM routines (e.g. FindTask) are no faster.
Just to check, I tried "GVPCpuCtrl NOFASTROM" and "CPU NOFASTROM". The
machine didn't slow down afterwards.
Can anybody suggest what the problem might be? Do I have a hardware
malfunction?
I'm using an Amiga 1500 (= A2000) with 1Mb chip, 4Mb of 16-bit RAM, total
5Mb of 32-bit RAM. Jumper J12 on the board is disconnected. I found I
had software problems with it shorted – but the speed was no different.
BTW the CACHE options do have a marked effect on speed.
Any help would be appreciated.
Regards,
Shraddhan from the UK
With a GVP 68EC030 accelerator, only GvpCpuCtrl will actually remap Kickstart.
CPU will not remap it, although it may tell you that it did. What version of
GvpCpuCtrl are youu using? I'll try to talk to the Technical Support
department on Monday and see what may be causing your problem…
Gary Nush
I spoke to our Technical Support group, and your system should be functioning
correctly, with the items you described in your message. I'm going to
CompuServe Mail the latest version of GvpCpuCtrl to you. Give that a try, and
if that still fails, call GVP Technical Support for more info, and/or an RMA…
Gary Nush
After thorough testing with the version of GVPCpuCtrl you sent me, I
can find no difference in speed. The little test program I wrote to
exercise 'ROM'-based code shows no significant difference.
The only difference is that the old software told me that it had
re-mapped the ROM, but the new software remains silent on this
point. I noticed that the new software still contains the text
message about re-mapping the ROM. Is the software trying to tell me
it failed?
>call GVP Technical Support for more info, and/or an RMA…
I'm in Britain. Is there somewhere local I can contact, or do I have
to send a fax to the States?
Can you give me some idea of the kind of speed-up to expect in
practice? Someone told me that the effect was almost negligible.
(I'd like to have serial.device work faster if possible.)