Ry
22c7b26317
fox32: Use logo as window icon :3
2022-03-12 17:11:54 -08:00
Ry
93d331bb07
fox32+fox32rom: Use DMA for the disk controller
...
Instead of accessing one byte at a time, use a DMA-like system to
read/write a whole sector at a time directly to/from memory.
2022-03-12 13:12:10 -08:00
Ry
998646cb80
fox32+fox32asm: Add proper support for greater than and less than
...
This adds IFGT, IFGTEQ, IFLT, and IFLTEQ, which makes it easier to
check for these conditions.
2022-03-12 12:15:27 -08:00
Ry
342c3e6061
fox32+fox32rom: Remove the concept of "fast" and "shared" memory
...
Instead of having two banks of RAM, just have one bank. This requires
the use of some cursed code, but it's fine :P
Co-authored-by: Lua <lua@foxgirl.dev>
2022-03-11 17:13:18 -08:00
Ry
cb2712cbf4
fox32: Exit on CPU halt
2022-03-11 11:52:05 -08:00
Ry
fe279c4d85
fox32: Introduce better error handling
...
Instead of panicing, we now just print an error and exit in some
situations where a panic is too verbose. Maybe we should just change
the panic handler instead though?
2022-03-11 11:03:27 -08:00
Ry
1419bb5b1f
fox32: Add note about passing a file as an arg to the README
2022-03-11 10:53:59 -08:00
Ry
676d611334
fox32: Add note about Vulkan requirement to the README
2022-03-11 10:51:04 -08:00
Ry
9674cbb2dd
fox32: Show memory sizes in MiB and KiB
2022-03-11 10:47:41 -08:00
ry755
69a47b9336
fox32: Prevent div from modifying the carry flag
2022-02-26 16:41:35 -08:00
ry755
738ccd16e8
fox32: Allow specifying a disk to be inserted using command line args
2022-02-23 10:49:39 -08:00
ry755
27f308e785
fox32+fox32rom: Rename "mount"/"unmount" to "insert"/"remove"
2022-02-22 14:05:39 -08:00
ry755
eebeff2073
fox32: Set the stack pointer to zero by default
2022-02-11 20:33:39 -08:00
ry755
f2adfa6b2b
fox32: Update encoding.md
2022-02-06 22:12:45 -08:00
ry755
7083e7a704
fox32+fox32asm: Make ImmediatePtr encoding consistent for src and dest
2022-02-02 04:43:23 -08:00
ry755
e8287097ad
fox32: Use the instruction size when reading from an immediate pointer
...
Previously, Operand::ImmediatePtr always read 32 bits from memory, then
truncated the value if the instruction size was smaller. Technically
this worked, but it would cause fox32 to print warnings if reading a
value at the very end of memory, because it would attempt to read past
the end of memory. Now, Operand::ImmediatePtr contains the instruction
size which is used by read_source().
This reverts commit 634a776a631c8e34f138dfbbfebf1c5cc74b6f05
2022-02-02 04:18:57 -08:00
ry755
deed31144f
fox32: Remove outdated TODO
2022-02-02 04:07:09 -08:00
ry755
fe476414b7
fox32: Add 3 extra bytes at the end of fast and shared memory
...
Because Operand::ImmediatePtr always reads 4 bytes (even if the
instruction size is smaller), attempting to read the last byte of
memory through a pointer would cause fox32 to warn about reading
unmapped memory. Adding 3 extra bytes to the end of memory prevents
this.
2022-02-01 23:07:51 -08:00
ry755
29d6690d97
Add unfinished READMEs
2022-01-31 03:11:08 -08:00
ry755
7d85bc93cf
Add LICENSE
2022-01-31 01:51:26 -08:00
ry755
20c71b8e70
fox32: Temporarily remove audio output support
...
IMO this wasn't implemented very well, so I'm removing this until I can
come up with a better implementation.
2022-01-30 17:04:23 -08:00
ry755
3b9c7b8bee
fox32: Set title of open file dialog
2022-01-30 02:50:01 -08:00
ry755
6a319071c0
fox32: Allow any file type to be selected for mounting
2022-01-30 02:49:07 -08:00
ry755
64035f9629
fox32: Don't print a message to the terminal when the mouse is clicked
2022-01-30 01:01:25 -08:00
ry755
b957b58fb2
fox32: Implement a very basic disk controller
...
Any file type can be mounted as a disk, as long as the code running
inside fox32 can understand its data.
2022-01-29 23:17:51 -08:00
ry755
4f278bc58b
fox32: Show version info on startup and in the window title
2022-01-27 18:30:59 -08:00
ry755
5c07305a5f
fox32+fox32rom: Change the IO port base to 0x80000000
2022-01-27 18:11:54 -08:00
ry755
7a507fd768
fox32: Show ROM size on startup
2022-01-27 18:01:36 -08:00
ry755
d56648aa79
fox32: Clean up Memory stuff, and change the shared memory base
...
Shared memory is now mapped starting at 0x80000000
2022-01-27 17:50:07 -08:00
ry755
34de523f4d
fox32: Set the stack pointer to the end of fast memory by default
2022-01-27 17:22:00 -08:00
ry755
982b4c7b89
fox32: Make fast_memory and rom public
2022-01-27 17:21:01 -08:00
ry755
06f69b322b
fox32: Restructure Memory a little bit, and print sizes on startup
2022-01-27 17:17:11 -08:00
ry755
abee6efc82
fox32: Use ../fox32rom/fox32.rom if ./fox32.rom doesn't exist
2022-01-27 16:57:54 -08:00
ry755
99621394ec
fox32: Move Memory to a separate file
2022-01-27 16:42:57 -08:00
ry755
994f6d7152
fox32: Move Bus to a separate file
2022-01-27 16:23:35 -08:00
ry755
3c6fda4b5c
fox32: Rename CPU to Cpu
2022-01-27 16:20:17 -08:00
ry755
cf835927cb
fox32: Use read_register() and write_register() everywhere
2022-01-26 23:43:02 -08:00
ry755
601874a6e4
fox32: Show a slightly more friendly error if fox32.rom doesn't exist
2022-01-26 23:39:50 -08:00
ry755
9ff6ed608a
fox32: Fix typos and improve language in encoding.md
2022-01-26 22:50:19 -08:00
ry755
51551e1c50
fox32: Change ROM filename from rom.bin to fox32.rom
2022-01-26 22:48:58 -08:00
ry755
9b21b663f4
Initial commit
...
I should've made a git repo for this much sooner, oops :p
2022-01-26 22:21:21 -08:00
