I've been (trying to) get into some hacking with the Sega Master System (trying to build custom cartridges basically)
As part of that, I decided to build this device called the SMSReader: http://www.smspower.org/Development/SMSReader as a way to test things.
Schematic here: http://www.smspower.org/forums/viewtopic.php?t=6457
The problem of course, then, is that it does not work properly!
I have tried with a number of retail cartridges so far, it will read some cartridges just fine, but chokes when trying to read others, where large chunks of the dumped file are just all 1s or Hex FFFF
I've tried all the points listed here: http://www.smspower.org/Development/...roubleshooting but to no avail.
My thread on their forums is here: http://www.smspower.org/forums/viewtopic.php?t=13471 but so far nobody has given much useful help.
I'm hoping someone here might be able to give some help instead, I know it's a long shot but I really don't know what else to do. If there was some stupid mistake in the design for example, I would not be experienced enough to spot it.
As part of that, I decided to build this device called the SMSReader: http://www.smspower.org/Development/SMSReader as a way to test things.
Schematic here: http://www.smspower.org/forums/viewtopic.php?t=6457
The problem of course, then, is that it does not work properly!
I have tried with a number of retail cartridges so far, it will read some cartridges just fine, but chokes when trying to read others, where large chunks of the dumped file are just all 1s or Hex FFFF
I've tried all the points listed here: http://www.smspower.org/Development/...roubleshooting but to no avail.
My thread on their forums is here: http://www.smspower.org/forums/viewtopic.php?t=13471 but so far nobody has given much useful help.
I'm hoping someone here might be able to give some help instead, I know it's a long shot but I really don't know what else to do. If there was some stupid mistake in the design for example, I would not be experienced enough to spot it.
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