Byron Lathi
d140928148
Add testing function for reading sd blocks
...
Add a simple function which reads a 512 block from the SD card and then
prints it to the console.
2022-04-14 11:23:44 -05:00
Byron Lathi
f4e16c0c12
Add software interface for reading SD card data
...
Adds functions to wait for data to be read, and to read data form the sd
card controller.
2022-04-11 14:03:42 -05:00
Byron Lathi
9eaa6c49f9
Add software support for sd response codes
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Polls the sd controller until the read flag is set, at which point it
reads 32 bits of data from the controller.
long response codes (such as CID) are not supported in hw or sw.
2022-04-10 23:18:26 -05:00
Byron Lathi
385efb2511
Read some data off of the sd card
...
These series of commands are enough to read the first 512b block off of
the sd card. The RCA is hard coded to the sd card that I have on hand,
since response codes are not supported
2022-04-10 19:34:38 -05:00
Byron Lathi
7092cc8f77
Add SD card software interface
...
Adds a function to send a command to the sd card.
2022-04-10 17:55:51 -05:00
Byron Lathi
0752cc4b8c
do a little test to see if memory mapping works
...
This code creates a shared mapping in high ram, makes sure that that
works, and also makes sure that the memory which is mapped over is left
unchanged.
2022-04-07 12:43:47 -05:00
Byron Lathi
35040860e7
Identity map memory upon reset
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Upon reset the mapper is set to identity map and then enabled.
2022-04-07 10:36:50 -05:00
Byron Lathi
5c32fe808e
Add board-io, replace sevenseg in sw
2022-03-18 01:27:55 +00:00
Byron Lathi
7619c7c54f
new testing program
2022-03-17 15:05:37 -05:00
Byron Lathi
2a1f8df54e
Create SDRAM memory region
2022-03-17 13:37:34 -05:00
Byron Lathi
15b91dcc20
Add conio
...
Also removes print statements from the interrupt handler (except for the
button interrupt)
2022-03-14 22:20:15 -05:00
Byron Lathi
a671fda51c
Add sample puts function
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"Hello, world!" :)
2022-03-14 10:46:36 -05:00
Byron Lathi
1a9290b97b
Implement hex_set_24
2022-03-12 21:55:17 -06:00
Byron Lathi
9bbfce23e2
Add driver for hex digits
...
This only includes the method to set the pairs of displays individually.
The functions to write a single 16 or 32 bit value have not been
implemented yet, nor has the mask function.
2022-03-12 21:26:19 -06:00
Byron Lathi
5106e50395
Update bootstrap code
...
Was missing some things like initializing the stack pointer, clearing
BSS, and things like that
2022-03-11 22:57:22 -06:00
Byron Lathi
bf28201832
Add basic hex digit code
2022-03-11 18:25:47 -06:00
Byron Lathi
bac37bab55
Remove non existing import
2022-03-08 15:50:10 -06:00
Byron Lathi
2c26e82a0d
Remove io c code
2022-03-08 15:41:03 -06:00
Byron Lathi
6b24abdbd5
Add io helper functions
2022-03-05 22:34:34 -06:00
Byron Lathi
048db615b9
Add basic io header
2022-03-05 21:17:33 -06:00
Byron Lathi
9c29aa4fdf
Update linker script to allow c source files
2022-03-05 21:09:46 -06:00
