|
|
b1108e375d
|
Build system: Fixed standalone ./system/Makefile build and general Makefile improvements
|
2023-12-06 18:13:24 +00:00 |
|
|
|
8edafd70cf
|
Build system: Improved the handling of seeds, moved most of the board specific build instructions to the board specific .mk file and fixed bios.asm dependencies
|
2023-12-05 21:46:56 +00:00 |
|
|
|
2fcc521f12
|
Peripherals/Wishbone_memory: Rewrote the module to be more efficient, smaller and also support byte level addressing. It is correct enough now to run code out of!
|
2023-12-05 02:50:21 +00:00 |
|
|
|
26210be950
|
Peripherals/I2C_driver: Corrected the implementation of the bidirectional SDA pin, fixing the final yosys 0.35 warning
|
2023-12-04 22:40:53 +00:00 |
|
|
|
63ea29e399
|
Peripherals/Memory: Added support for the litedram DDR memory controller, created a new memory map and updated all relevant code and files including the addition of rudimentary wait state support for the cpu (BIU)
|
2023-12-03 19:24:39 +00:00 |
|
|
|
aedefddb5d
|
Project: The cpu finally works perfectly now even at full speed as far as i can tell! I made the ram and register writes synchronous which fixed the weird issues I had, then I added -abc9 to yosys so that nextpnr can actually route the cpu at full speed and increased the display fifo since the cpu is so fast now!!
|
2023-11-15 18:43:56 +00:00 |
|
|
|
29bc2e6d96
|
Project: Cleaned up some code and run the project through aspell
|
2023-11-15 14:37:46 +00:00 |
|
|
|
09ccce5f30
|
Peripherals/HD44780: Rewrote and cleaned up a lot of the driver code. Unfortunately what i think is a very weird bug in yosys is still affecting the codebase
|
2023-11-15 00:26:46 +00:00 |
|
|
|
2c8e8a9d9c
|
Added simple support for \n and \r on the HD44780 driver, increased the synthesised mem to fit brainfuck_compiled.asm and made it the default.
|
2023-11-12 21:39:27 +00:00 |
|
|
|
7d2cb5672f
|
Reduced numbers to be sorted in gnome_sort.asm to fit in lcd, fixed hlt on real hardware, slowed down cpu, increased lcd fifo and with that I almost got gnome_sort.asm working perfectly on real hardware
|
2023-11-12 07:31:05 +00:00 |
|
|
|
a88c420ca5
|
Added an I2C driver, a PCF8574 driver and an HD44780 display driver. Unfortunately this shows that even fibonacci doesn't run correctly. Nonetheless, I made colored_led.asm output text to the display!
|
2023-11-09 22:10:55 +00:00 |
|
|
|
1a1634c673
|
Updated README, improved fpga-specific makefile options and updated the version number
|
2023-11-07 14:37:22 +00:00 |
|
|
|
01dcbfa7a1
|
The CPU works on real hardware for the first time! I added an adjustment for ram size, added control for a led and a test program for it. On the fpga board there is an actual led there that I used to verify functionality
|
2023-11-06 08:13:36 +00:00 |
|
|
|
934e2f5a36
|
Fixed a bunch of things wrong with fpga_top.v and gated off some more simulation-only code
|
2023-11-02 23:46:12 +00:00 |
|
|
|
601397b7f0
|
Properly added fpga_top.v stuff in the build system and fixed some syntax errors
|
2023-11-02 22:00:07 +00:00 |
|
|
|
36bf8f9c7a
|
Added OrangeCrab board-specific code to connect the cpu to the outside world
|
2023-11-02 20:40:04 +00:00 |
|
|
|
5feee9de57
|
Added support to the build system for synthesising, place and routing, serialising and uploading the design to a Lattice ECP5 OrangeCrab FPGA
|
2023-11-02 00:29:14 +00:00 |
|
