 H. Peter Anvin
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75980f5efb
fw: now working interrupt handling, periodic timer flashing LEDs
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3 years ago |
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H. Peter Anvin
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7f9ba1c3cd
Update FPGA generated files
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3 years ago |
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H. Peter Anvin
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105317a04c
sdcard: works now! (At least reading)
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3 years ago |
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H. Peter Anvin
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6ead9a1ad1
sdcard: fix switching to high speed mode
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3 years ago |
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H. Peter Anvin
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8a937a6f83
sdcard: now talking to the SD card; driver fixes still needed
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3 years ago |
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H. Peter Anvin
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6a406133f0
Add sdcard and sysclock units; reshuffle address map
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3 years ago |
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H. Peter Anvin
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65f412c5d0
Add sdcard unit; currently SPI based
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3 years ago |
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H. Peter Anvin
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0b0eec607b
spirom: fix data corruption on reader stall
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3 years ago |
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H. Peter Anvin
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6b8d647c0a
fw: update SRAM_SIZE to 32K
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3 years ago |
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H. Peter Anvin
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1f822e260c
Change onboard fast SRAM from 8K to 32K
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3 years ago |
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H. Peter Anvin
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a6e8bd9b0e
fw: more detailed error messages for downloader
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3 years ago |
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H. Peter Anvin
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dce6ed79e1
fw, console: add flush function
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3 years ago |
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H. Peter Anvin
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9bf7d10a84
tty: add status register and irq support; clean up iodev map
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3 years ago |
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H. Peter Anvin
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03019163e4
spirom: revert uploader to arbitrary 8*n-byte bursts
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3 years ago |
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H. Peter Anvin
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42f4ad6376
Make downloader work; use PLL for SDRAM clock offset
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3 years ago |
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H. Peter Anvin
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925ec18e6d
fw: add data download test
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3 years ago |
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H. Peter Anvin
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f476073603
SPI ROM -> SDRAM download unit (not quite working yet?)
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3 years ago |
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H. Peter Anvin
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08ac6caba9
fw: revert to 115200 bps
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3 years ago |
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H. Peter Anvin
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0176e771d1
fw: irq wrapper, picorv32 custom instructions, _die() with blinkenlights
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3 years ago |
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H. Peter Anvin
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56287b0a05
sdram: leave CKE permanently enabled
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3 years ago |
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H. Peter Anvin
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6b7c85430e
sdram: I/O timing tweaks, hopefully for the better...
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3 years ago |
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H. Peter Anvin
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e9f9d2c765
fw: print error messages on a new line
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3 years ago |
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H. Peter Anvin
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f2f1e52e5e
fw: better SDRAM test (fails?)
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3 years ago |
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H. Peter Anvin
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b2bb8e764d
fw: avoid 64-bit division in con_set_baudrate()
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3 years ago |
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H. Peter Anvin
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4f9855b5c4
tty: simplify by running in the sys_clk domain; use NCO for baud
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3 years ago |
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H. Peter Anvin
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16e9576297
fpga: make the SDRAM work!
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3 years ago |
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H. Peter Anvin
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9e0713c926
sdram: remove misaligned handling
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3 years ago |
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H. Peter Anvin
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115e7850e2
tty: actually clock tty unit; alternative serial port on GPIO
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3 years ago |
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H. Peter Anvin
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0bb16fa955
fpga: switch RxD and TxD back for reworked boards
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3 years ago |
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H. Peter Anvin
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10bc2b4ed1
Make the LED output numbers match the order on the back
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3 years ago |
