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[/] [openarty/] [trunk/] [rtl/] - Rev 25

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25 The memory now works. However, the core speed has been lowered to 81.25MHz
to do this. The top level file is no longer fasttop.v, but toplevel.v.
dgisselq 2797d 22h /openarty/trunk/rtl/
24 Here are the updates from the first (failed) attempt to try to integrate
the DDR3 SDRAM controller onto this board.
dgisselq 2816d 17h /openarty/trunk/rtl/
21 Removed the OLED controller one additional clock from the bus. This was
necessary to maintain the 200MHz clock speed, especially given the growing
fanout of the device bus.
dgisselq 2826d 17h /openarty/trunk/rtl/
20 Lots of bug fixes: After turning on XIP, and running in XIP mode, leaving XIP
mode turns it back off again, necessitating a new write to the VCon register.
Further, XIP mode starts in extended SPI mode, and only transfers in QSPI
mode for data. Finally, two new commands have been created: enabling the
SPI memory reset, and actually resetting the SPI memory. In general, these
are all better--as the EQSPI flash controller now works with these changes,
whereby it didn't really work without them before.
dgisselq 2826d 17h /openarty/trunk/rtl/
19 Creates an LED mask portion of writing to the LED's register. Only those
bits specified in the mask (bits [7:4]) will be adjusted in the LED
register on a write. Hence to set all on, set the LED register to 0x0ff,
all off, 0x0f0, or to set LED 0 to on while leaving the others unchanged,
set it to 0x011.
dgisselq 2826d 17h /openarty/trunk/rtl/
17 Fixed the misaddressed I/O peripherals in the fastio peripheral group. In
particular, UART and GPS were misaddressed. This has now been fixed, so these
peripherals (should) match the spec. Further, the default speed of the two
UARTs has been adjusted to 115200/8N1 for the aux UART, and 9600/8N1 for the
GPS UART. The Aux UART transmitter also passes testing, so at least that one
works.
dgisselq 2828d 16h /openarty/trunk/rtl/
13 Here are the updates necessary to get the initial Quad SPI flash driver working.
This includes in particular the bus interconnect (in fastmaster.v), and the
final hookup to the external wires (in fasttop.v).
dgisselq 2828d 18h /openarty/trunk/rtl/
12 A work in progress. This checkin contains fixes for the flash (mostly),
together with some logic reductions facilitating full speed (200MHz) build.
dgisselq 2829d 20h /openarty/trunk/rtl/
3 Initial set of files. The flash appears to work, memory hasn't been started,
the MDIO controller works in simulation, etc. Everything below fasttop.v works
at 200MHz (not the CPU---yet).
dgisselq 2845d 00h /openarty/trunk/rtl/

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