August 4th, 2017, 9:33
August 4th, 2017, 10:07
There are reports of CF card drives that work in the Roland SP-808 but no confirmed reports of exactly which drives or adapters. This is a huge thing if a CF or SD card adapter can be found for the Roland SP-808 Sampler. I’m not expecting it work really as so many adapters have been tried on the SP-808 and it’s been reported the OS firmware is the reason behind all the failed attempts.
I think the issue of CF modding the SP-808 is that it MUST be an ATAPI compliant IDE interface’d CF adapter unit. ATAPI is the same as CD/DVD/Tape and of course ZIP drives.. they all have one thing in common, they can eject their media. When you get a standard IDE to CF adapter, it wont work.. especially on the SP 808.
The ATAPI Flash Memory Card Drive (P/N ATGx-CFxx) is a CompactFlash to ATA/ATAPI Flash memory card drive which adapts True IDE CF Card(s) in either Type I or Type II form factor to a standard solid state / non-volatile Flash ATA/ATAPI drive.
August 4th, 2017, 10:25
HaQue wrote:When he started playing with the D-Beam (Theramin?) my dogs went berserk
August 4th, 2017, 10:56
fzabkar wrote:Is there any bridge IC that connects a USB device or memory card to a SATA host in ATAPI mode? If so, then you could use an adapter based on such a bridge, and connect this adapter to your Roland via an intermediate PATA-to-SATA bridge.
SP-808 <- PATA-to-SATA bridge -> <- SATA-to-USB-or-memory-card bridge -> USB device or memory card
I would think that the best chance of finding an ATAPI adapter would be one which supports SD/MMC cards, not just CF. CF relies on ATA commands (which require no translation) whereas SD/MMC uses a different command set
The RockBox site is very useful because users have uploaded the results of the ATA Identify Device command (ECh) for several ATA devices. In your case I would be testing prospective ATAPI candidates with the Identify Packet Device command (A1h)
The IISDMC ATAPI card reader handles CF cards, so it must convert them from ATA to ATAPI. This requires "smart" intervention rather than mere physical connector conversion
As for the ATG device, there are some reasonable photos in the following eBay listing. Clearly it's not a passive adapter, so it could potentially be an ATAPI device. However, I can't make out the chip numbers
BTW, the SP-808 technical manual has firmware upgrade instructions. AIUI, you can do this in two ways -- either via a Zip disc, or via the MIDI interface with 8 floppy diskettes.
August 4th, 2017, 15:59
August 4th, 2017, 16:19
Since the SP 808 OS code only supports ATAPI IDE, that is why you can never get a fixed HD to work in one. You could get it to work if you custom altered the OS code itself.. or use the A6 OS code that has the IDE HD support code in it.
August 4th, 2017, 18:46
August 4th, 2017, 21:04
August 4th, 2017, 21:12
August 4th, 2017, 21:34
fzabkar wrote:Is US$200 too much?
August 5th, 2017, 0:44
August 5th, 2017, 1:09
fzabkar wrote:The VIA chip is unsuitable -- it connects a USB host to a memory card device.
August 5th, 2017, 4:27
August 5th, 2017, 14:15
August 5th, 2017, 15:40
August 5th, 2017, 16:28
August 5th, 2017, 17:11
August 6th, 2017, 9:02
If I now understand correctly, you were proposing this setup (which will probably work):
SP-808/808EX ATAPI/IDE host <--> SD adapter <--> VIA USB-memory-card adapter <--> memory card
August 6th, 2017, 17:00
August 6th, 2017, 19:11
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