CF vs. SD

[Motormouth]

Whilst the V5 SCSI2SD is stable and reliable for me, i upgraded it a while back to the latest firmware and it is now incredibly slow. I'm using it on an Apollo 2030 which I know is a rubbish controller anyway, but it's annoying that I upgraded the firmware to achieve a slower speed, we're talking...200kb/s (booting takes an age) and the older firmware versions don't seem to be available anymore.

mmmmmm.... I put the v4.7 firmware on my V5a, now I am getting 1MB/sec from my unaccelerated A500 with GVP HD8+ and 8 megs of fast ram.  I think this is up from 800kBytes/sec for an older firmware (maybe something like v4.2)

[Motormouth]

I have CF and SD in Mechy SCSI card readers on both my A500 and A2000.  Haven't run any speed tests in a while but from what I recall the CF was faster than the SD.  This is about the most direct "apples to apples" comparison one would be able to do.  Although there's so many variables involved in this question - the make and performance characteristics of the card, they type of interface used, I imagine the file system would affect performance, how many adapters are required between the devices...  Good luck! :lol:

This thread reminds me that I've still got a 2091 sitting on my shelf, halfway done with the 14MHz hack.  Maybe one of these years I'll get around to finishing it!  :rofl:

I love my Mechy readers, but I was never able to get SD working in them,  I was able to get lun 0 with CF in pcmcia adapter to work and lun 1 CF in CF slot too work.

[Motormouth]

Get an ACARD 7720 (or a 7722 if you know how to desolder and reflash the ROM) and use a small IDE DOM with it. Its an awesome combo.

Here is my setup, NOTE!! I desoldered the IDE header from the other side of the board and relocated to the front and switch to pins from a socket so I could use this DOM on the header directly. The 7722 is also reflashed with the ROM from a 7720 so I can use it with hard drives and not only CD/DVD-ROM like the 7722 is locked for, and is why the 7722 is a lot cheaper.

@Acill  I was looking at these on ebay.  You post clears things up...  
So how do you do the flash from 7722 to 7720?  The Block of six pins in the upper right corner?

[Motormouth]

You have to get the 7722 I have in my picture. If you look at it you can see a square SST branded ROM chip in the left side. The one you get MUST be this exact one. IBM makes one like this with a flat ROM that I dont know how to reflash. This one in this ebay link is the WRONG one.

http://r.ebay.com/BgHHY3

I see the difference, unfortunately the Square SST chip looks older, hopefully this doesn't mean obsolete.  

So how do you flash it?

[Motormouth]

mmmmmm.... I put the v4.7 firmware on my V5a, now I am getting 1MB/sec from my unaccelerated A500 with GVP HD8+ and 8 megs of fast ram.  I think this is up from 800kBytes/sec for an older firmware (maybe something like v4.2)

Just FYI, using the built in A3000 scsi (same western digital scsi chip as the GVP HD8+).
I got 2Mbyte/sec from the Mechy reader and 1Mbyte/sec from the SCSI2SD