Byron Lathi
9b1576774b
Factor out relocation code into method
2023-08-23 19:52:11 -07:00
Byron Lathi
cc1d8d2015
Update o65dump to show reloc and undef symbols
2023-08-23 00:11:57 -07:00
Byron Lathi
8bccfed867
Change segment order to make o65 layout valid
...
VECTORS was messing things up
2023-08-22 20:49:07 -07:00
Byron Lathi
c5b1a47c8e
start o65dump.py
2023-08-22 19:27:26 -07:00
Byron Lathi
9972f8cb36
Update order for kernel segments
2023-08-22 19:27:09 -07:00
Byron Lathi
851c26e4dd
Print out filenames as we read them
2023-08-21 20:02:57 -07:00
Byron Lathi
de9353a009
Find kernel in second stage bootloader
2023-08-21 19:33:52 -07:00
Byron Lathi
906516c4b5
Add comments and use less magic
2023-08-15 23:06:10 -07:00
Byron Lathi
68ff523b10
Use actual values from sd card
2023-08-15 19:30:11 -07:00
Byron Lathi
dfdb41a875
Automatically copy rom image and warn about rebuild
2023-08-14 23:44:51 -07:00
Byron Lathi
a657957ae2
Load a multi-sector file and execute it
2023-08-14 20:44:27 -07:00
Byron Lathi
3bd022107e
Read start cluster
2023-08-14 20:21:03 -07:00
Byron Lathi
937a04c891
Remove some debug info
2023-08-12 19:16:46 -07:00
Byron Lathi
053b0d7e3e
Find bootloader in FAT
2023-08-12 19:03:24 -07:00
Byron Lathi
fd9389268a
Load root directory from sd card
2023-08-12 16:09:03 -07:00
Byron Lathi
7039e649bb
Update cc65
2023-08-12 12:28:16 -07:00
Byron Lathi
7ad1079289
Restart kernel
2023-08-12 11:59:45 -07:00
Byron Lathi
069ae5db4b
Update format script
...
I think there may still be some issues with a drive that is formatted
wrong, but it works consistently right now.
When modifying the boot sector, it now leaves alone the partition tables
and the bios parameter block. This does reduce the amount of code from
510 bytes to 380, but this is find as it only takes about 29 bytes to
load a sector into memory.
2023-08-09 22:46:18 -07:00
Byron Lathi
d191c1da5b
Modify disk script to leave partition table intact
2023-08-08 23:52:57 -07:00
Byron Lathi
6b0caea84c
Link bootloader with bios to get access to symbols
...
By doing this we don't need to call bios functions, we can just jsr
directly to the addresses. This does mean that everytime the bios
changes the bootloader has to change, but ideally all the bootloader
does is load the bios and then get remapped out of memory. Any important
drivers like file system can be loaded from the bootloader.
This also means that the runtime functions are located in the bios for
the bootloader, so the rom will have to stay mapped in until the kernel
is started, at which point it will have its own runtime and the rom and
bootloader are no longer needed.
2023-08-08 22:16:42 -07:00
Byron Lathi
e73c4e1d08
Rewrite readblock in assembly
2023-08-08 19:28:10 -07:00
Byron Lathi
446f4e7539
Get bios calls starting to work
2023-08-06 21:41:15 -07:00
Byron Lathi
6b42843f4b
remote testing code
2023-07-31 20:03:59 -07:00
Byron Lathi
18b8ac7ccf
Rename bootloader to bios, add actual bootloader
2023-07-31 19:58:32 -07:00
Byron Lathi
5128fe64b6
Merge branch 'spi_master' into 'master'
...
add spi controller and sd asm code.
See merge request bslathi19/super6502!17
2023-07-29 22:32:21 +00:00
Byron Lathi
096472e084
Get SD card reads working
2023-07-23 22:44:19 -07:00
Byron Lathi
d16675ed3c
Consolidate resp3 and resp7, fix stack issue
...
wasn't pushing res to stack, which makes stack pointer wrong
2023-07-23 21:45:54 -07:00
Byron Lathi
7e958c8a11
powerupseq assembly rewrite
2023-07-23 19:00:39 -07:00
Byron Lathi
8f3a1a5968
res1_cmd assembly rewrite
2023-07-23 18:43:39 -07:00
Byron Lathi
1c693b029d
readres3 assembly rewrite
2023-07-23 18:25:29 -07:00
Byron Lathi
028a431189
readres2 and readbytes assembly rewrite
2023-07-23 18:00:22 -07:00
Byron Lathi
2ef463846f
Consolidate another res1 function
2023-07-23 17:30:05 -07:00
Byron Lathi
60072603d9
Rewrite readRes1, consolidate res1 commands
2023-07-23 17:26:40 -07:00
Byron Lathi
709c60cf36
SD_command assembly rewrite
2023-07-23 16:25:13 -07:00
Byron Lathi
5ca5fca29b
Get SD card working in SPI
2023-07-23 14:55:14 -07:00
Byron Lathi
6a1a76db35
Implement basic SPI controller
2023-07-21 23:01:37 -07:00
Byron Lathi
85f12c75f1
Start spi controller and tb
2023-07-21 22:10:39 -07:00
Byron Lathi
6706cc502e
Update software to match efinix hw
2023-07-19 21:07:17 -07:00
Byron Lathi
6eeecda368
Add wait states during refresh
2023-07-19 21:06:54 -07:00
Byron Lathi
21e3a477c1
Update IP
2023-07-19 21:06:20 -07:00
Byron Lathi
2f11808f11
Change to simpler rom
2023-01-13 13:07:13 -06:00
Byron Lathi
7682dffe3c
Change test program to use correct args
...
Seems to work, when you run the test program it resets the card and
sends the voltage and test pattern, and it does receive a response from
the card.
2023-01-12 21:45:13 -06:00
Byron Lathi
98c07b59b4
Add files from previous version
2023-01-12 17:06:25 -06:00
Byron Lathi
3ff6205e93
Add weak pull up (NEED STRONGER PULLUP)
...
weak pullup is enabled, but these are only about 40k when 10k is needed.
I added two 10k resistors to the board.
2023-01-12 17:05:06 -06:00
Byron Lathi
519cd19739
Add uart2 test program
...
Reads input from uart and then writes it back out again immediately.
2023-01-12 14:05:13 -06:00
Byron Lathi
d5bccd46e3
Add write flag and reset logic for read flag
2023-01-12 14:04:44 -06:00
Byron Lathi
ab46236816
First throw at UART.
2023-01-12 13:34:46 -06:00
Byron Lathi
7e97784992
Create UART and uart_wrapper
2023-01-11 21:16:16 -05:00
Byron Lathi
2f37965464
Add labels for sd mode
2023-01-10 16:58:08 -06:00
Byron Lathi
b5fc0587ac
Add labels on fpga side
2023-01-10 16:55:14 -06:00
