 H. Peter Anvin
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4a0966e759
abcbus: put the I/O status register (INP 1) in a separate SRAM
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3 years ago |
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H. Peter Anvin
|
ec99762a84
Use waitirq rather than suspending a memory transaction for SD card
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3 years ago |
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H. Peter Anvin
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56753cd6a3
abcbus: move abcbus to separate module; add I/O status register
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3 years ago |
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H. Peter Anvin
|
f6f9bf7ede
Add i2c unit
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3 years ago |
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H. Peter Anvin
|
8368aa9534
fpga: parameterize the rtc_32khz workaround
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3 years ago |
|
H. Peter Anvin
|
c40501f76e
SDRAM access from the ABC-bus
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3 years ago |
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H. Peter Anvin
|
518503fa99
iodev: centralize definitions and auto-generate boiler plate code
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3 years ago |
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H. Peter Anvin
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bcefeb445b
Switch to aggressive optimization to improve timing
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3 years ago |
|
H. Peter Anvin
|
f48fe1c4cf
fpga: disable pull resistors for SPI to flash chip
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3 years ago |
|
H. Peter Anvin
|
6a406133f0
Add sdcard and sysclock units; reshuffle address map
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3 years ago |
|
H. Peter Anvin
|
65f412c5d0
Add sdcard unit; currently SPI based
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3 years ago |
|
H. Peter Anvin
|
e3d2be2211
fpga: don't generate .jam file
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3 years ago |
|
H. Peter Anvin
|
269914ae92
Remove .jam file - it is text and so messes up diffs; unused
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3 years ago |
|
H. Peter Anvin
|
152a913007
qsf: add spirom.sv; update boot.mif
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3 years ago |
|
H. Peter Anvin
|
42f4ad6376
Make downloader work; use PLL for SDRAM clock offset
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3 years ago |
|
H. Peter Anvin
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445c3542f1
Makefile target to really strip Signaltap from max80.qsf
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3 years ago |
|
H. Peter Anvin
|
f476073603
SPI ROM -> SDRAM download unit (not quite working yet?)
|
3 years ago |
|
H. Peter Anvin
|
9e0713c926
sdram: remove misaligned handling
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3 years ago |
|
H. Peter Anvin
|
115e7850e2
tty: actually clock tty unit; alternative serial port on GPIO
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3 years ago |
|
H. Peter Anvin
|
f2060589ab
Default baud rate = 115200, baud rate programmable
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3 years ago |
|
H. Peter Anvin
|
4410a635c4
Minimal console serial port (1000000-N81) "Hello, World!"
|
3 years ago |
|
H. Peter Anvin
|
265fb7692e
CPU now can execute instructions, at least in simulation!!
|
3 years ago |
|
H. Peter Anvin
|
c78f9d909d
Roll back picorv32 hacks for unaligned memory support
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3 years ago |
|
H. Peter Anvin
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062a3d9eb1
Reorganize tree so a single Makefile can do the right thing
|
3 years ago |
