Byron Lathi
61f6e53327
Updates based on fpga test
...
1. in SD mode, CMD0 does not have a response, so we specifically ignore
it.
2. The penable signal was messed up, although it looks like this doesn't
matter anyway
3. The SD clock should be out of phase from the data signal by 180
degrees, so that we get max hold time
2024-03-10 22:09:55 -07:00
Byron Lathi
da41e60ee7
integrate sd controller and super simple tb
2024-03-10 11:31:07 -07:00
Byron Lathi
10a72d8e1f
Add sdram, don't think it works though
2024-03-03 20:43:37 -08:00
Byron Lathi
ab9da189d1
Build software correctly, ignore debugger files
2024-03-03 14:50:40 -08:00
Byron Lathi
42fbc17a2a
Add test code and top level Makefile
2024-03-03 12:52:44 -08:00
Byron Lathi
0a0394ae33
Delete everything
2024-03-02 20:11:33 -08:00
Byron Lathi
0aca4af272
Add fixes for multiple sectors per cluster
2023-12-08 23:11:52 -08:00
Byron Lathi
5259fa8e65
Clear the carry flag, not the interrupt flag...
2023-12-08 08:12:50 -08:00
Byron Lathi
15e9b44318
Try clearing carry flag, that always helps. Also don't need verilog image anymore
2023-12-07 23:29:18 -08:00
Byron Lathi
6f16ac4daf
Add close, add filesystem code to main kernel for hardware testing
2023-12-07 08:10:45 -08:00
Byron Lathi
0327ab6a2b
Handle non-aligned reads
2023-12-06 21:02:41 -08:00
Byron Lathi
066bb0ee8c
Get read working a little bit more. Need to handle edge cases!
2023-12-05 23:29:00 -08:00
Byron Lathi
4c3c3fd731
Get something working with read
...
It is not reading offset correctly
2023-12-05 22:47:24 -08:00
Byron Lathi
48b39eb92d
Hack together open()
2023-12-05 19:10:27 -08:00
Byron Lathi
9ae1593957
Read out very long file, but not very long name
2023-12-05 08:29:44 -08:00
Byron Lathi
13738fc0d8
Read a little bit of the data from the file
2023-12-05 08:15:24 -08:00
Byron Lathi
946234381d
Look through files without trying too hard
2023-12-05 08:08:20 -08:00
Byron Lathi
2859055f98
Add some basic code, build kernel stuff in tree
2023-12-04 23:06:00 -08:00
Byron Lathi
902b1b5bb9
Save root cluster number
2023-12-04 21:57:36 -08:00
Byron Lathi
84814f05f9
Calculate data start
2023-12-04 18:40:21 -08:00
Byron Lathi
16a7f4db4d
Update cc65 pointer with PVSeek
2023-12-04 00:18:18 -08:00
Byron Lathi
5c74d161d4
Add some basic fat32 code
2023-12-03 23:27:45 -08:00
Byron Lathi
184c58b962
Add dumb multiplier code test
2023-12-02 20:31:59 -08:00
Byron Lathi
de804ac3ca
Use tmp1 instead of y register
...
popa clobbers y
2023-12-01 22:53:41 -08:00
Byron Lathi
e8452eb98c
Add rtc_set
2023-12-01 08:28:38 -08:00
Byron Lathi
32c82044a7
Fix more bugs
2023-12-01 00:56:16 -08:00
Byron Lathi
a169b30028
Fix not saving to ptr1 and comparing y
2023-11-30 23:58:30 -08:00
Byron Lathi
597d15e234
Add terminal write as well, use it in kernel
2023-11-29 17:19:18 -08:00
Byron Lathi
b25d0e9bdb
First shot at terminal read
2023-11-29 08:38:25 -08:00
Byron Lathi
5b6a4e1442
Start terminal driver
2023-11-28 23:52:27 -08:00
Byron Lathi
e73d8db74c
Serial Fix
...
Fixes a typo with getc_nb, removes the RTC tick code (since we know it
works now and it is clogging up the screen), read characters in a loop
instead of just once.
2023-11-28 23:23:31 -08:00
Byron Lathi
fd9ccdbce4
Add serial driver and irq support
2023-11-28 22:54:26 -08:00
Byron Lathi
3524892f80
Add quick uart irq test
2023-11-28 17:45:20 -08:00
Byron Lathi
9ce5b7592f
Use longer rtc interval
2023-11-22 20:57:49 -08:00
Byron Lathi
930e802a86
Add init code for mapper
...
init_mapper now remaps so that it can change irq vectors
2023-11-22 17:33:12 -08:00
Byron Lathi
90e0708012
update devices_setup_test makefile
2023-11-21 20:29:21 -08:00
Byron Lathi
0232d9c89f
Rename symbols again
2023-11-21 20:20:25 -08:00
Byron Lathi
b7b852ae4a
Update irq test code
2023-11-21 20:04:06 -08:00
Byron Lathi
102c4dfe8a
Use vectors for irq and nmi
2023-11-21 18:53:17 -08:00
Byron Lathi
4392a01de8
#53 Reduce interrupts to 128
2023-11-21 08:17:36 -08:00
Byron Lathi
e7f8be44b7
enable interrupt when we register irq
2023-11-21 08:06:46 -08:00
Byron Lathi
d172706313
Clear interrupt before waiting
2023-11-20 23:32:05 -08:00
Byron Lathi
7089b663ca
add interrupt init code (and increase rtc tick rate)
2023-11-20 22:23:18 -08:00
Byron Lathi
5d599042d4
link kernel objects as well
2023-11-20 20:19:42 -08:00
Byron Lathi
323519edbd
Enable interrupts, print out current rtc tick
2023-11-20 20:02:31 -08:00
Byron Lathi
531bb4cf13
Fix bad sp and writing to zp0
2023-11-20 18:37:04 -08:00
Byron Lathi
e6a16b0c73
Add device setup test using kernel drivers
2023-11-20 08:29:35 -08:00
Byron Lathi
3861e44693
PIC: Disable all irqs at start
2023-11-19 23:30:02 -08:00
Byron Lathi
1e9be6c764
RTC: Fix threshold/irq_threshold initialization
...
Also throw some newlines in the kernel print messages.
2023-11-19 23:28:11 -08:00
Byron Lathi
680bccee62
Init rtc and pic in kernel
2023-11-19 22:11:29 -08:00
