May 14th, 2022, 15:14
May 15th, 2022, 11:44
May 15th, 2022, 11:59
May 16th, 2022, 14:02
May 16th, 2022, 14:29
May 16th, 2022, 16:00
May 16th, 2022, 19:27
fzabkar wrote:Which adapter are you using? What is the bridge IC?
May 16th, 2022, 19:30
fzabkar wrote:The datasheets for various SATA-IDE bridge ICs stipulate an allowable operating range of 3.3V +/-0.3V for the digital I/O supply. I expect that the arcade game runs off 5V, as would most PCs (?). Therefore I'm wondering just how reliable the IDE interface can be.
JMicron JM20330:
http://www.users.on.net/~fzabkar/temp/JM20330_Spec_Rev.-2.3.pdf
Sunplus SPIF223A ATA to Serial ATA Bi-directional Bridge, QFP-64:
http://monitor.espec.ws/files/spif223a_182.pdf
Marvell 88SA8052 SATA-PATA bridge (page 17):
http://cache.amobbs.com/bbs_upload782111/files_24/ourdev_524768.pdf
May 16th, 2022, 20:48
May 17th, 2022, 7:07
fzabkar wrote:Those three bridges I listed all have the same pinout. The differences are in the supply voltages and configuration pins. You can see this in the Marvell PDF.
The JMicron datasheet describes the MODE pins. These allow you to select a slower UDMA interface rate. Perhaps that's the trick? You might also try disabling the SSC pin, if it isn't already.
Rohm also has a bridge which appears to be pin compatible (BU29504KV):
http://www.farnell.com/datasheets/46182.pdf
BTW, I'm not surprised that you are having problems with JMicron. Their JM20337 USB-SATA/PATA bridge had an insidious data corruption bug.
http://www.hddoracle.com/viewtopic.php?f=56&t=632
Here's a bridge from Genesis Logic (GL831A, different pinout):
http://www.arrivalelectronics.co.uk/uploads/files/GL831ADatasheet_103.pdf
May 17th, 2022, 14:26
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