Doug Brown
3252f66749
Added untested support for erasing a specific portion of the SIMM
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(in 256 KB increments). Won't be able to test it until I implement it in
the control software as well, but I think it should work.
2012-10-16 18:36:55 -07:00
Doug Brown
667c2c5a2d
Added verify during write. It seems to mostly work except when the chip
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is completely removed from the SIMM -- in that case, the verification
still passes for some reason. I'm still debugging this one. Maybe the
data I had just written is still essentially on the bus because of the
floating pins and it reads it too fast? Maybe turning on pull-ups would
help with that?
2012-09-30 14:41:22 -07:00
Doug Brown
7acb3ffcc3
Added support for (untested yet) 8 MB ROM SIMM with chips that expect a
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slightly different programming protocol.
2012-09-02 15:56:49 -07:00
Doug Brown
145487d388
Added GPL header to all of my source files.
2012-05-25 20:21:04 -07:00
Doug Brown
6f24f97df5
Got rid of a few magic numbers, cleaned up more code
2012-05-13 17:48:35 -07:00
Doug Brown
4adb0c4980
Started working on more optimizations, but something weird is happening and it's crashing...not sure why yet.
2011-12-11 21:48:26 -08:00
Doug Brown
b4eb6c3ddc
Started getting writing working, as well as the ability to restrict to a specific set of chips to write to
2011-12-11 13:28:32 -08:00
Doug Brown
e0977a9339
Created read and write cycle functions, along with a block read function. I think this will look better...
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I also changed the port module so it doesn't needlessly update the data direction register over SPI if it's being told to set the same value it had before.
2011-12-11 10:12:22 -08:00
Doug Brown
8865d0c00f
I got the device identification working, and I'm in the middle of breaking it into its own set of functions for write cycles, read cycles, unlock sequence, etc.
2011-12-10 18:40:30 -08:00
Doug Brown
1540bcadd1
Tested reading the entire SIMM contents back to the computer (it works)
2011-12-10 13:53:43 -08:00
Doug Brown
407f6831a9
Initial import of my test code for the SIMM programmer board. Right now
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it contains an (untested) MCP23S17 driver complete with AVR SPI support,
and an (untested) external memory interface driver that uses it.
2011-11-25 23:10:30 -08:00
