Hello everyone
Here are some pictures of my system :)
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Hello everyone
Here are some pictures of my system :)
Looks like a damn fine 500 system. :thumbsup:
So you have an Acard on this with IDE CF.
What is the transfer speed of this ?
@paal
Awesome! I do love the A530 =)
Now, I notice the Elbox 8MB unit in there as well.. Unfortunately this is not going to work as the GVP already has 8MB onboard.
Both adapters use the 8MB of the 24bit remaining addressing space. As such you will only be able to use 8MB - the other 8MB on the 68000 CPU socket is likely to be shadowing what is on the GVP board RAM - or more than likely has been turned off.
You should remove this (remember to replace the CPU back on the motherboard) and use the elbox RAM card in another of your projects.
Other than that its looking like a great start =)
seems it's higher then the A500, right??? I always thougt it will be same high would be looking much better. But very beautiful hardware indeed :)
Hello BuzzQuote:
Originally Posted by Buzzfuzz
it was 0xffffff, I attempted to change this in HDToolbox, but there was no FFS on the cf card.
means that it no longer works: (
I bought the card pre-installed on ebay, a frend on this forum told me that it was missing some files to
---------- Post added at 21:31 ---------- Previous post was at 21:22 ----------
The height of the GVP controllers you mean?Quote:
Originally Posted by gehtjanx
it is as high as the A500, but the top is loose, there is a ide cables out the back
All this is going on inside of the machine when it is finished,
Only a temporary solution
thanks
I was running similar setup (in my case: A500 rev 6.a, GVP A530 with 8 MB RAM, SCSI-IDE and 4 GB Compact Flash, only I had external SCSI CD-ROM) while ago before I towerized my A500 - great stuff mate, A500 forever!
That is max transfer, I meant transfer speed, which you can test in Sysinfo.Quote:
Originally Posted by paalrosenHello BuzzQuote:
Originally Posted by Buzzfuzz
it was 0xffffff, I attempted to change this in HDToolbox, but there was no FFS on the cf card.
means that it no longer works: (
I bought the card pre-installed on ebay, a frend on this forum told me that it was missing some files to
@Buzzy
I have been talking with Paal in PM, as his CF setup has problems
From what I can gather it was formatted for FFS under Workbench 3.1 and then Workbench 2.1 was just lumped on the top... as such its missing a lot of support.
from my experiments with other hardware we should be able to ascertain the approximate speed of the GVP530.
I am using the following cards
GVP A500 HC8+ (8MB)
GVP 2008 Impact Series II SCSI controller (8MB)
GVP Combi 040 (16MB)
I am using the following CPU's
68000@7mhz - A500 HC8+ / GVP Impact Series 2
68040@33mhz - GVP Combi 040
Results are quite interesting, but first let me show you this -
http://s2.postimage.org/1l11k04h0/pic_001.jpg
The above test is on an A1200 with 40Mhz 030 with 32MB of RAM on the native IDE
As you can see the native IDE can achieve 1,643KB transfer rate, although it has no free CPU time to actually process any of that information.
http://s2.postimage.org/1l0zwgrz8/pic_002.jpg
The above is a test on the GVP HC8+ on an A500+ (the result is the same with the A2000 and A2000 A2008 Impact series II SCSI controller - both of these are using a 7Mhz 68000 CPU and 8MB of FAST RAM.
As you can see the both GVP setups achieve a little faster 1,651KB per second transfer - but amazingly the 68000 CPU is over 90% idle, which means it has a lot more cycles to actually do stuff with the data while loading.
This is due to the benefit of DMA controllers that the GVP has.
However, there is a problem with the GVP controllers as they are limited to 24bit DMA this means that the result is not scalable with the faster 32bit CPU's in fact, performance does drop off.
Remember the 68000 cpu is Hybrid 16/32 - CPU
Fun Fact: here is a bit of history for you, the Atari ST got its name from the CPU- Atari Sixteen Thirtytwo
Now, the GVP Combi-040 adapter uses the identical GVP SCSI controller as all the other GVP cards mentioned. However the processor on the card is a very beefy 040@33Mhz which achieves about 24 MIPS - this compared to a Motorola MC68000@7Mhz (with FAST RAM) which achieves about 0.8 MIPS
So, the GVP Combi-040 is quite a magnitude faster in Processing - how does this translate with the SCSI controller... well compared to must Disk solution on a miggy its not that bad - considering this is 20 year old Tech its amazing in my book
Unfortunately I don't have a screen output images from my last test (I have striped my A2000 down for some A2000 motherboard testings) however from memory the results were -
2.1MB per second transfer
20% Idle
This means that although I have a nice 2.1MB a second transfer speed, I am losing nearly 80% of my CPU time as it has to hammer the FIFO buffer for the information - The FIFO buffer is what is used on the GVP cards when transferring SCSI data to 32bit FAST ram.
Ralph Bables website Lists the maximums rates based on the GVP as well as other SCSI controller's. I can say that the manual is pretty damn spot on in regards to transfer speeds available to the GVP controllers
1.7MB/s GVP: bus adapter chip 33C93 - (24bit DMA CHIP)
2.3MB/s GVP: DMA into Zorro-II Fast RAM (24bit DMA FAST)
2.3MB/s GVP: DMA into RAM on GVP Accelerators (32bit FAST)
The GVP controller is capable of much faster operation so have a look on Ralph's site for lots of details on the product that he worked on with GVP, its a good insight, no doubt he could explain it much better than I =)
From the Above results I suspect that the GVP530 will be within the 1.7MB and 2.3MB range of transfer speed, I also suspect that CPU usage will be about the same as the 040, perhaps slightly more.
Well it doesn't matter now anymore as details leaked on the ACA520, which will be a 020 @ 14Mhz with IDE and you can add an ACA1230 to it for more performance.
I think this way the A500's and maybe even A2000 will benefit from IDE.
SCSI is nice, but way too expensive and sometimes a bit hard to find already.
I was looking if that Acard was worth it, but hearing the ACA520 would cost even less than an Acard, well easy choice ha :D